713 lines
20 KiB
Perl
713 lines
20 KiB
Perl
package WebGUI::Shop::Cart;
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use strict;
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use Class::InsideOut qw{ :std };
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use JSON;
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use WebGUI::Asset::Template;
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use WebGUI::Exception::Shop;
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use WebGUI::Form;
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use WebGUI::International;
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use WebGUI::Shop::AddressBook;
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use WebGUI::Shop::CartItem;
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use WebGUI::Shop::Ship;
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use WebGUI::Shop::Tax;
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=head1 NAME
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Package WebGUI::Shop::Cart
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=head1 DESCRIPTION
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The cart is the glue that holds a user's order together until they're ready to check out.
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=head1 SYNOPSIS
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use WebGUI::Shop::Cart;
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my $cart = WebGUI::Shop::Cart->new($session);
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=head1 METHODS
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These subroutines are available from this package:
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=cut
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readonly session => my %session;
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private properties => my %properties;
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private error => my %error;
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private itemCache => my %itemCache;
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private addressBookCache => my %addressBookCache;
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#-------------------------------------------------------------------
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=head2 addItem ( sku )
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Adds an item to the cart. Returns a reference to the newly added item.
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=head3 sku
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A reference to a subclass of WebGUI::Asset::Sku.
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=cut
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sub addItem {
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my ($self, $sku) = @_;
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unless (defined $sku && $sku->isa("WebGUI::Asset::Sku")) {
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WebGUI::Error::InvalidObject->throw(expected=>"WebGUI::Asset::Sku", got=>(ref $sku), error=>"Need a sku.");
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}
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my $item = WebGUI::Shop::CartItem->create( $self, $sku);
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return $item;
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}
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#-------------------------------------------------------------------
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=head2 calculateSubtotal ()
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Returns the subtotal of the items in the cart.
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=cut
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sub calculateSubtotal {
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my $self = shift;
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my $subtotal = 0;
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foreach my $item (@{$self->getItems}) {
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my $sku = $item->getSku;
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$subtotal += $sku->getPrice * $item->get("quantity");
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}
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return $subtotal;
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}
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#-------------------------------------------------------------------
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=head2 create ( session )
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Constructor. Creates a new cart object if there’s not one already attached to the current session object. Otherwise just instanciates the existing one. Returns a reference to the object.
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=head3 session
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A reference to the current session.
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=cut
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sub create {
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my ($class, $session) = @_;
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unless (defined $session && $session->isa("WebGUI::Session")) {
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WebGUI::Error::InvalidObject->throw(expected=>"WebGUI::Session", got=>(ref $session), error=>"Need a session.");
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}
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my $cartId = $session->id->generate;
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$session->db->write('insert into cart (cartId, sessionId) values (?,?)', [$cartId, $session->getId]);
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return $class->new($session, $cartId);
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}
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#-------------------------------------------------------------------
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=head2 delete ()
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Deletes this cart and removes all cartItems contained in it. Also see onCompletePurchase() and empty().
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=cut
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sub delete {
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my ($self) = @_;
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$self->empty;
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$self->session->db->write("delete from cart where cartId=?",[$self->getId]);
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undef $self;
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$itemCache{ref $self} = {};
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return undef;
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}
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#-------------------------------------------------------------------
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=head2 empty ()
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Removes all items from this cart. Also see onCompletePurchase() and delete().
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=cut
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sub empty {
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my ($self) = @_;
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foreach my $item (@{$self->getItems}) {
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$item->remove;
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}
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$itemCache{ref $self} = {};
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}
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#-------------------------------------------------------------------
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=head2 formatCurrency ( amount )
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Formats a number as a float with two digits after the decimal like 0.00.
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=head3 amount
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The number to format.
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=cut
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sub formatCurrency {
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my ($self, $amount) = @_;
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unless (defined $amount) {
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WebGUI::Error::InvalidParam->throw(error=>"Need an amount.");
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}
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return sprintf("%.2f", $amount);
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}
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#-------------------------------------------------------------------
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=head2 get ( [ property ] )
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Returns a duplicated hash reference of this object’s data.
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=head3 property
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Any field − returns the value of a field rather than the hash reference.
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=cut
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sub get {
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my ($self, $name) = @_;
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if (defined $name) {
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return $properties{id $self}{$name};
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}
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my %copyOfHashRef = %{$properties{id $self}};
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return \%copyOfHashRef;
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}
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#-------------------------------------------------------------------
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=head2 getAddressBook ()
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Returns a reference to the address book for the user who's cart this is.
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=cut
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sub getAddressBook {
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my $self = shift;
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my $id = ref $self;
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unless (exists $addressBookCache{$id}) {
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$addressBookCache{$id} = WebGUI::Shop::AddressBook->newBySession($self->session);
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}
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return $addressBookCache{$id};
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}
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#-------------------------------------------------------------------
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=head2 getCartBySession ( session )
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Class method that figures out if the user has a cart in their session. If they do it returns it. If they don't it creates it and returns it.
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=head3 session
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A reference to the current session.
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=cut
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sub getCartBySession {
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my ($class, $session) = @_;
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unless (defined $session && $session->isa("WebGUI::Session")) {
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WebGUI::Error::InvalidObject->throw(expected=>"WebGUI::Session", got=>(ref $session), error=>"Need a session.");
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}
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my $cartId = $session->db->quickScalar("select cartId from cart where sessionId=?",[$session->getId]);
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return $class->new($session, $cartId) if (defined $cartId);
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return $class->create($session);
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}
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#-------------------------------------------------------------------
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=head2 getId ()
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Returns the unique id for this cart.
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=cut
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sub getId {
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my ($self) = @_;
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return $self->get("cartId");
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}
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#-------------------------------------------------------------------
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=head2 getItem ( itemId )
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Returns a reference to a WebGUI::Shop::CartItem object.
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=head3 itemId
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The id of the item to retrieve.
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=cut
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sub getItem {
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my ($self, $itemId) = @_;
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unless (defined $itemId && $itemId =~ m/^[A-Za-z0-9_-]{22}$/) {
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WebGUI::Error::InvalidParam->throw(error=>"Need an itemId.");
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}
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my $id = ref $self;
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if (exists $itemCache{$id}{$itemId}) {
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return $itemCache{$id}{$itemId};
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}
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my $item = WebGUI::Shop::CartItem->new($self, $itemId);
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$itemCache{$id}{$itemId} = $item;
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return $item;
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}
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#-------------------------------------------------------------------
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=head2 getItems ( )
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Returns an array reference of WebGUI::Asset::Sku objects that are in the cart.
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=cut
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sub getItems {
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my ($self) = @_;
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my @itemsObjects = ();
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my $items = $self->session->db->read("select itemId from cartItem where cartId=?",[$self->getId]);
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while (my ($itemId) = $items->array) {
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push(@itemsObjects, $self->getItem($itemId));
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}
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return \@itemsObjects;
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}
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#-------------------------------------------------------------------
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=head2 getItemsByAssetId ( assetIds )
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Returns an array reference of WebGUI::Asset::Sku objects that have a specific asset id that are in the cart.
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=head3 assetIds
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An array reference of assetIds to look for.
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=cut
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sub getItemsByAssetId {
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my ($self, $assetIds) = @_;
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return [] unless (scalar(@{$assetIds}) > 0);
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my @itemsObjects = ();
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my $items = $self->session->db->read("select itemId from cartItem where cartId=? and assetId in (".$self->session->db->quoteAndJoin($assetIds).")",[$self->getId]);
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while (my ($itemId) = $items->array) {
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push(@itemsObjects, $self->getItem($itemId));
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}
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return \@itemsObjects;
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}
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#-------------------------------------------------------------------
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=head2 getShipper ()
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Returns the WebGUI::Shop::ShipDriver object that is attached to this cart for shipping.
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=cut
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sub getShipper {
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my $self = shift;
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return WebGUI::Shop::Ship->new($self->session)->getShipper($self->get("shipperId"));
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}
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#-------------------------------------------------------------------
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=head2 getShippingAddress ()
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Returns the WebGUI::Shop::Address object that is attached to this cart for shipping.
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=cut
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sub getShippingAddress {
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my $self = shift;
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return $self->getAddressBook->getAddress($self->get("shippingAddressId"));
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}
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#-------------------------------------------------------------------
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=head2 getTaxes ()
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Returns the tax amount on the items in the cart.
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=cut
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sub getTaxes {
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my $self = shift;
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my $tax = WebGUI::Shop::Tax->new($self->session);
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return $self->formatCurrency($tax->calculate($self));
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}
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#-------------------------------------------------------------------
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=head2 new ( session, cartId )
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Constructor. Instanciates a cart based upon a cartId.
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=head3 session
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A reference to the current session.
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=head3 cartId
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The unique id of a cart to instanciate.
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=cut
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sub new {
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my ($class, $session, $cartId) = @_;
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unless (defined $session && $session->isa("WebGUI::Session")) {
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WebGUI::Error::InvalidObject->throw(expected=>"WebGUI::Session", got=>(ref $session), error=>"Need a session.");
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}
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unless (defined $cartId && $cartId =~ m/^[A-Za-z0-9_-]{22}$/) {
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WebGUI::Error::InvalidParam->throw(error=>"Need a cartId.");
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}
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my $cart = $session->db->quickHashRef('select * from cart where cartId=?', [$cartId]);
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if ($cart->{cartId} eq "") {
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WebGUI::Error::ObjectNotFound->throw(error=>"No such cart.", id=>$cartId);
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}
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my $self = register $class;
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my $id = id $self;
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$session{ $id } = $session;
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$properties{ $id } = $cart;
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return $self;
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}
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#-------------------------------------------------------------------
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=head2 onCompletePurchase ()
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Calls onCompletePurchase() on all the items in the cart. Then deletes all the items in the cart without calling $item->remove() on them which would affect inventory levels. See also delete() and empty().
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=cut
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sub onCompletePurchase {
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my $self = shift;
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foreach my $item (@{$self->getItems}) {
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$item->getSku->onCompletePurchase($item);
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$item->delete;
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}
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$self->delete;
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}
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#-------------------------------------------------------------------
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=head2 readyForCheckout ( )
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Returns whether all the required properties of the the cart are set.
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=cut
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sub readyForCheckout {
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my $self = shift;
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# Check if the shipping address is set and correct
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my $address = eval{$self->getShippingAddress};
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return 0 if WebGUI::Error->caught;
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# Check if the ship driver is chosen and existant
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my $ship = eval {$self->getShipper};
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return 0 if WebGUI::Error->caught;
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# Check if the cart has items
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return 0 unless scalar @{ $self->getItems };
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# All checks passed so return true
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return 1;
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}
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#-------------------------------------------------------------------
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=head2 requiresRecurringPayment ( )
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Returns whether this cart needs to be checked out with a paydriver that can handle recurring payments.
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=cut
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sub requiresRecurringPayment {
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my $self = shift;
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# Look for recurring items in the cart
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foreach my $item (@{ $self->getItems }) {
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return 1 if $item->getSku->isRecurring;
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}
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# No recurring items in cart so return false
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return 0;
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}
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#-------------------------------------------------------------------
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=head2 update ( properties )
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Sets properties in the cart.
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=head3 properties
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A hash reference that contains one of the following:
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=head4 shippingAddressId
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The unique id for a shipping address attached to this cart.
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=head4 shipperId
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The unique id of the configured shipping driver that will be used to ship these goods.
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=cut
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sub update {
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my ($self, $newProperties) = @_;
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unless (defined $newProperties && ref $newProperties eq 'HASH') {
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WebGUI::Error::InvalidParam->throw(error=>"Need a properties hash ref.");
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}
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my $id = id $self;
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foreach my $field (qw(shippingAddressId shipperId)) {
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$properties{$id}{$field} = (exists $newProperties->{$field}) ? $newProperties->{$field} : $properties{$id}{$field};
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}
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$self->session->db->setRow("cart","cartId",$properties{$id});
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}
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#-------------------------------------------------------------------
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=head2 updateFromForm ( )
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Updates the cart totals.
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=cut
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sub updateFromForm {
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my $self = shift;
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my $form = $self->session->form;
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foreach my $item (@{$self->getItems}) {
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if ($form->get("quantity-".$item->getId) ne "") {
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eval { $item->setQuantity($form->get("quantity-".$item->getId)) };
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if (WebGUI::Error->caught("WebGUI::Error::Shop::MaxOfItemInCartReached")) {
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my $i18n = WebGUI::International->new($self->session, "Shop");
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$error{id $self} = sprint($i18n->get("too many of this item"), $item->get("configuredTitle"));
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}
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elsif (my $e = WebGUI::Error->caught) {
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$error{id $self} = "An unknown error has occured: ".$e->message;
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}
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}
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}
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my $cartProperties;
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$cartProperties->{ shipperId } = $form->process( 'shipperId' ) if $form->process( 'shipperId' );
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$self->update( $cartProperties );
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}
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#-------------------------------------------------------------------
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=head2 www_checkout ( )
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Update the cart and then redirect the user to the payment gateway screen.
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=cut
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sub www_continueShopping {
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my $self = shift;
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$self->updateFromForm;
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if ($error{id $self} ne "") {
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return $self->www_view;
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}
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$self->session->http->setRedirect($self->session->url->page('shop=pay;method=selectPaymentGateway'));
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return undef;
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}
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#-------------------------------------------------------------------
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=head2 www_continueShopping ( )
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Update the cart and the return the user back to the asset.
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=cut
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sub www_continueShopping {
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my $self = shift;
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$self->updateFromForm;
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if ($error{id $self} ne "") {
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return $self->www_view;
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}
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return undef;
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}
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#-------------------------------------------------------------------
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=head2 www_removeItem ( )
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Remove an item from the cart and then display the cart again.
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=cut
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sub www_removeItem {
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my $self = shift;
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my $item = $self->getItem($self->session->form->get("itemId"));
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delete $itemCache{ref $self}{$item->getId};
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$item->remove;
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return $self->www_view;
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}
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#-------------------------------------------------------------------
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=head2 www_setShippingAddress ()
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Sets the shipping address for the cart or for a cart item if itemId is one of the form params.
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=cut
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sub www_setShippingAddress {
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my $self = shift;
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my $form = $self->session->form;
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if ($form->get("itemId") ne "") {
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$self->getItem($form->get("itemId"))->update({shippingAddressId=>$form->get('addressId')});
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}
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else {
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$self->update({shippingAddressId=>$form->get('addressId')});
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}
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return $self->www_view;
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}
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#-------------------------------------------------------------------
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=head2 www_update ( )
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Updates the cart totals and then displays the cart again.
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=cut
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sub www_update {
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my $self = shift;
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$self->updateFromForm;
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return $self->www_view;
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}
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#-------------------------------------------------------------------
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=head2 www_view ( )
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Displays the shopping cart.
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=cut
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sub www_view {
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my $self = shift;
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my $session = $self->session;
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my $url = $session->url;
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my $i18n = WebGUI::International->new($session, "Shop");
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my @items = ();
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# set up html header
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$session->style->setRawHeadTags(q|
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<script type="text/javascript">
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function setCallbackForAddressChooser (form, itemId) {
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form.shop.value='address';
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form.method.value='view';
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itemId = (itemId == undefined) ? 'null' : "'" + itemId + "'";
|
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form.callback.value='{"url":"|.$url->page.q|","params":[{"name":"shop","value":"cart"},{"name":"method","value":"setShippingAddress"},{"name":"itemId","value":'+itemId+'}]}';
|
||
form.submit();
|
||
}
|
||
</script>
|
||
|);
|
||
|
||
# generate template variables for the items in the cart
|
||
foreach my $item (@{$self->getItems}) {
|
||
my $sku = $item->getSku;
|
||
$sku->applyOptions($item->get("options"));
|
||
my %properties = (
|
||
%{$item->get},
|
||
url => $sku->getUrl("shop=cart;method=viewItem;itemId=".$item->getId),
|
||
quantityField => WebGUI::Form::integer($session, {name=>"quantity-".$item->getId, value=>$item->get("quantity")}),
|
||
isUnique => ($sku->getMaxAllowedInCart == 1),
|
||
isShippable => $sku->isShippingRequired,
|
||
extendedPrice => $self->formatCurrency($sku->getPrice * $item->get("quantity")),
|
||
price => $self->formatCurrency($sku->getPrice),
|
||
removeButton => WebGUI::Form::submit($session, {value=>$i18n->get("remove button"),
|
||
extras=>q|onclick="this.form.method.value='removeItem';this.form.itemId.value='|.$item->getId.q|';this.form.submit;"|}),
|
||
shipToButton => WebGUI::Form::submit($session, {value=>$i18n->get("ship to button"),
|
||
extras=>q|onclick="setCallbackForAddressChooser(this.form,'|.$item->getId.q|');"|}),
|
||
);
|
||
my $address = eval {$item->getShippingAddress};
|
||
unless (WebGUI::Error->caught) {
|
||
$properties{shippingAddress} = $address->getHtmlFormatted;
|
||
}
|
||
push(@items, \%properties);
|
||
}
|
||
my %var = (
|
||
%{$self->get},
|
||
items => \@items,
|
||
error => $error{id $self},
|
||
formHeader => WebGUI::Form::formHeader($session)
|
||
. WebGUI::Form::hidden($session, {name=>"shop", value=>"cart"})
|
||
. WebGUI::Form::hidden($session, {name=>"method", value=>"update"})
|
||
. WebGUI::Form::hidden($session, {name=>"itemId", value=>""})
|
||
. WebGUI::Form::hidden($session, {name=>"callback", value=>""}),
|
||
formFooter => WebGUI::Form::formFooter($session),
|
||
updateButton => WebGUI::Form::submit($session, {value=>$i18n->get("update cart button")}),
|
||
checkoutButton => WebGUI::Form::submit($session, {value=>$i18n->get("checkout button"),
|
||
extras=>q|onclick="this.form.shop.value='pay';this.form.method.value='selectPaymentGateway';this.form.submit;"|}),
|
||
continueShoppingButton => WebGUI::Form::submit($session, {value=>$i18n->get("continue shopping button"),
|
||
extras=>q|onclick="this.form.method.value='continueShopping';this.form.submit;"|}),
|
||
chooseShippingButton => WebGUI::Form::submit($session, {value=>$i18n->get("choose shipping button"),
|
||
extras=>q|onclick="setCallbackForAddressChooser(this.form);"|}),
|
||
shipToButton => WebGUI::Form::submit($session, {value=>$i18n->get("ship to button"),
|
||
extras=>q|onclick="setCallbackForAddressChooser(this.form);"|}),
|
||
subtotalPrice => $self->formatCurrency($self->calculateSubtotal()),
|
||
);
|
||
|
||
# get the shipping address
|
||
my $address = eval { $self->getShippingAddress };
|
||
if (WebGUI::Error->caught("WebGUI::Error::ObjectNotFound")) {
|
||
# choose another address cuz we've got a problem
|
||
$self->update({shippingAddressId=>""});
|
||
}
|
||
|
||
# if there is no shipping address we can't check out
|
||
if (WebGUI::Error->caught) {
|
||
$var{shippingPrice} = $var{tax} = $self->formatCurrency(0);
|
||
}
|
||
|
||
# if there is a shipping address calculate tax and shipping options
|
||
else {
|
||
$var{hasShippingAddress} = 1;
|
||
$var{shippingAddress} = $address->getHtmlFormatted;
|
||
$var{tax} = $self->getTaxes;
|
||
my $ship = WebGUI::Shop::Ship->new($self->session);
|
||
my $options = $ship->getOptions($self);
|
||
my %formOptions = ();
|
||
my $defaultOption = "";
|
||
foreach my $option (keys %{$options}) {
|
||
$defaultOption = $option;
|
||
$formOptions{$option} = $options->{$option}{label}." (".$self->formatCurrency($options->{$option}{price}).")";
|
||
}
|
||
$var{shippingOptions} = WebGUI::Form::selectBox($session, {name=>"shipperId", options=>\%formOptions, defaultValue=>$defaultOption, value=>$self->get("shipperId")});
|
||
$var{shippingPrice} = ($self->get("shipperId") ne "") ? $options->{$self->get("shipperId")}{price} : $options->{$defaultOption}{price};
|
||
$var{shippingPrice} = $self->formatCurrency($var{shippingPrice});
|
||
}
|
||
$var{totalPrice} = $self->formatCurrency($var{subtotalPrice} + $var{shippingPrice} + $var{tax});
|
||
|
||
# render the cart
|
||
my $template = WebGUI::Asset::Template->new($session, $session->setting->get("shopCartTemplateId"));
|
||
return $session->style->userStyle($template->process(\%var));
|
||
}
|
||
|
||
#-------------------------------------------------------------------
|
||
|
||
=head2 www_viewItem ( )
|
||
|
||
Displays the configured item.
|
||
|
||
=cut
|
||
|
||
sub www_viewItem {
|
||
my $self = shift;
|
||
my $itemId = $self->session->form->get("itemId");
|
||
my $item = eval { $self->getItem($itemId) };
|
||
if (WebGUI::Error->caught()) {
|
||
return $self->www_view;
|
||
}
|
||
my $sku = $item->getSku;
|
||
$sku->applyOptions($item->get("options"));
|
||
return $sku->www_view;
|
||
}
|
||
|
||
|
||
1;
|