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PODojo dojo.rawXhrPost and dojo.xhrPost
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  1. PODojo dojo.rawXhrPost and dojo.xhrPost
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    copied!<p>My question is: can we use dojo.xhrPost to post some Json data? More detail:</p> <p>I have been experimenting with Dojo code to POST JSON data to a RESTful service. It seems to be that the behaviours of <strong>dojo.xhrPost</strong> and <strong>dojo.rawXhrPost</strong> are different, or to be more accurate rawXhrPost() works and xhrPost() does not. This is not consistent with my reading of the <a href="http://docs.dojocampus.org/dojo/rawXhrPost" rel="noreferrer">docs</a></p> <blockquote> <p>The original purpose of dojo.rawXhrPost was a method that could be used to send a raw post body to the server. As of 1.3, this function is common with dojo.xhrPost(). So, for usage of dojo.rawXhrPost(), see dojo.xhrPost()</p> </blockquote> <p>Which implies that xhrPost() is enough. My code looks like this - I've got a "toy" library service that manages Editions of Books. The code wants to POST a new entry,</p> <pre><code> var myEdition = {"Edition":{"isbn":"44"}}; var xhrArgs = { url: "http://localhost:8081/LibraryWink/library/editions", postData: dojo.toJson(myEdition), handleAs: "json", headers: { "Content-Type": "application/json"}, load: function(data) { dojo.byId("mainMessageText").innerHTML = "Message posted."; }, error: function(error) { dojo.byId("mainMessageText").innerHTML = "Error :" + error; } }; var deferred = dojo.rawXhrPost(xhrArgs); </code></pre> <p>The <em>headers: { "Content-Type": "application/json"}</em> part in necessary so that my JAX-RC service understands that the content is JSON.</p> <p>What I find is that the code above works perfectly. However if instead I say:</p> <pre><code>var deferred = dojo.xhrPost(xhrArgs); </code></pre> <p>No data is transmitted in the POST. I have a TCP/IP monitor in place and can see that there is nothing transmitted.</p> <p>So, is this a bug, or am I driving xhrPost() incorrectly? Or should I use rawXhrPost()? If the latter, under what circumstances do we use the two flavours of XhrPost?</p>
 

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