102 lines
3.9 KiB
HTML
102 lines
3.9 KiB
HTML
<html>
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<head>
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<script src = "../../build/yahoo/yahoo.js" ></script>
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<script src = "../../build/connection/connection-min.js" ></script>
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<link rel="stylesheet" type="text/css" href="../../docs/assets/dpSyntaxHighlighter.css" />
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</head>
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<body>
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<h1> Connection Manager POST Transaction</h1>
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<p>
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To construct a POST transaction using the Connection Manager, you will need to construct a data string as the POST message. The following code example provides a step-by-step approach to creating a simple POST transaction.
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</p>
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<h3>Source file and dependencies</h3>
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<p>Load the YAHOO namespace and connection manager source file:</p>
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<pre><textarea name="code" class="JScript" cols="60" rows="1"><script src="yahoo.js"></script>
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<script src="connection.js"></script></textarea></pre>
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<h3>Assemble the POST message</h3>
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<p>Construct an example of key-value string of <em>username = anonymous</em> and <em>userid = 0</em>:</p>
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<pre><textarea name="code" class="JScript" cols="60" rows="1">/*
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* Remember to encode the key-value string if and when
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* the string contains special characters.
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*/
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var postData = "username=anonymous&userid=0";
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</textarea></pre>
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<h3>The Callback Object</h3>
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<p>Create a callback object to handle the response and pass an array of values to success and failure as the argument.</p>
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<pre>
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<pre><textarea name="code" class="JScript" cols="60" rows="1">var handleSuccess = function(o){
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if(o.responseText !== undefined){
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div.innerHTML = "Transaction id: " + o.tId;
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div.innerHTML += "HTTP status: " + o.status;
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div.innerHTML += "Status code message: " + o.statusText;
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div.innerHTML += "<li>HTTP headers: <ul>" + o.getAllResponseHeaders + "</ul></li>";
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div.innerHTML += "PHP response: " + o.responseText;
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div.innerHTML += "Argument object: " + o.argument;
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}
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}
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var callback =
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{
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success:handleSuccess,
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failure: handleFailure,
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argument: ['foo','bar']
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};
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</textarea></pre></pre>
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<h3>Initiate the POST Transaction</h3>
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<p>
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Call YAHOO.util.Connect.asyncRequest to send the request to post.php, and the PHP file will return the a readable output of $_POST via <strong>print_r()</strong>. The handleSuccess callback will print the response object's properties, including the server response data.
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</p>
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<pre><textarea name="code" class="JScript" cols="60" rows="1">var request = YAHOO.util.Connection.asyncRequest('POST', sUrl, callback, postData);
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</textarea></pre>
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<div id="container"></div>
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<script>
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var div = document.getElementById('container');
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var handleSuccess = function(o){
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if(o.responseText !== undefined){
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div.innerHTML = "<li>Transaction id: " + o.tId + "</li>";
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div.innerHTML += "<li>HTTP status: " + o.status + "</li>";
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div.innerHTML += "<li>Status code message: " + o.statusText + "</li>";
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div.innerHTML += "<li>HTTP headers received: <ul>" + o.getAllResponseHeaders + "</ul></li>";
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div.innerHTML += "<li>PHP response: " + o.responseText + "</li>";
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div.innerHTML += "<li>Argument object: Array ([0] => " + o.argument[0] +
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" [1] => " + o.argument[1] + " )</li>";
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}
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};
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var handleFailure = function(o){
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if(o.responseText !== undefined){
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div.innerHTML = "<li>Transaction id: " + o.tId + "</li>";
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div.innerHTML += "<li>HTTP status: " + o.status + "</li>";
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div.innerHTML += "<li>Status code message: " + o.statusText + "</li>";
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}
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};
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var callback =
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{
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success:handleSuccess,
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failure:handleFailure,
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argument:['foo','bar']
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};
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var sUrl = "post.php";
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var postData = "username=anonymous&userid=0";
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function makeRequest(){
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var request = YAHOO.util.Connect.asyncRequest('POST', sUrl, callback, postData);
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}
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</script>
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<form><input type="button" value="Send a POST Request" onClick="makeRequest();"></form>
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<script src="../../docs/assets/dpSyntaxHighlighter.js"></script>
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<script language="javascript">
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dp.SyntaxHighlighter.HighlightAll('code');
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</script>
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</body>
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</html>
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