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POgrails: display new web page via an ajax call
 

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  1. POgrails: display new web page via an ajax call
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    <p>I've had a look at a number of posts and none seem to handle this problem.</p> <p>I am trying to send data from a javascript via an ajax call and then get that data into a grails controller/action at server level to process and then to display that web page. The data gets transferred okay but the target web page fails to replace the current web page.</p> <p>Here is the ajax call that sends the data to the action successfully:</p> <pre><code> $.ajax({ type: "POST", url: "createVideopNm", dataType: "json", contentType: "application/json", asynch: false, processData: false, data: vidData //data: vidAudioId, // data: { name: "Mike", location: "UK" }, }) .done(function(msg, status, error) { alert( "getJsVCoords Done: data SAVED - Sys status: " + status + "\n" + " Error: " + error + "\n" + " responseText: " + msg.responseText ) }) .error(function(msg, status, error) { alert( "getJsVCoords Error: Data NOT Saved -1- Sys status: " + status + "\n" + " Error: " + error + "\n" + " responseText: " + msg.responseText ) }) </code></pre> <p>Here is the controller action which is definitely run through from the ajax call:</p> <pre><code> def createVideopNm(Integer max) { if(request.method == 'GET') { log.debug(" createVideopNm - GET ") } else if(request.method == 'POST') { // POST called from javascript functrionsendVidData in pNm log.debug(" createVideopNm - POST -1-") def jsonObject = request.JSON log.debug(" createVideopNm - POST -2-" + jsonObject.xCoord) render ( ['X': jsonObject.xCoord , 'Y': jsonObject.yCoord , 'P' : jsonObject.picId, 'A' : jsonObject.audioId] as JSON) log.debug(" createVideopNm - POST -3-") } def workVideo= prepVideopNm() flash.message = "createVideopNm workVideo nm: ${workVideo}" log.debug(" createVideopNm - -4-") params.max = Math.min(max ?: 10, 100) log.debug(" createVideopNm - -5-") [workVideo: workVideo] log.debug(" createVideopNm - -6-") return true } </code></pre> <p>As you can see I have a GET and a POST path through the action - if I simply bring up the page by typing in the URL in the browser address field it works fine. But if I invoke the action through the ajax call it does not appear - all logging indicates every thing is fine. For example, the Chrome web diagnostic tool Console has a message - "XHR finished loading: '<em>url name</em>'</p> <p>Comparing the grails log file for both the GET and the POST/ajax operations there are some additional grail log messagesfor the GET which reflects the fact it does correctly display the web page:</p> <pre><code>2013-05-16 20:05:42,104 [http-bio-9000-exec-8] DEBUG homevu1.VideosController - createVideopNm - -4- 2013-05-16 20:05:42,104 [http-bio-9000-exec-8] DEBUG homevu1.VideosController - createVideopNm - -5- 2013-05-16 20:05:42,104 [http-bio-9000-exec-8] DEBUG homevu1.VideosController - createVideopNm - -6- 2013-05-16 20:05:42,215 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - resolveResourceAndURI: [dir:images, file:favicon.ico] 2013-05-16 20:05:42,216 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - resolveResourceAndURI: [dir:images, file:apple-touch-icon.png] 2013-05-16 20:05:42,217 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - resolveResourceAndURI: [dir:images, file:apple-touch-icon-retina.png] 2013-05-16 20:05:42,218 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - resolveResourceAndURI: [dir:css, file:main.css] 2013-05-16 20:05:42,219 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - resolveResourceAndURI: [dir:css, file:mobile.css] 2013-05-16 20:05:42,219 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - laying out resources for request org.apache.catalina.connector.RequestFacade@275a7e94: [:] 2013-05-16 20:05:42,220 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - Rendering resources for disposition [head] 2013-05-16 20:05:42,220 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - Rendering resources, modules in tracker: null 2013-05-16 20:05:42,220 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - Rendering resources, modules needed: [] 2013-05-16 20:05:42,220 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - Rendering non-deferred resources, modules: []... 2013-05-16 20:05:42,220 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - Rendering page fragments for disposition: head 2013-05-16 20:05:42,220 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - Removing outstanding request disposition: head 2013-05-16 20:05:42,221 [http-bio-9000-exec-8] DEBUG resource.ResourceTagLib - resolveResourceAndURI: [dir:HomeVu1/skin, file:HomeVu.jpg, absolute:false] </code></pre> <p>Whereas the POST via ajax operation the logging simply stops after the 'createVideopNm - -6-' message.</p> <p>What is different in the behavior when an grails action is invoked via an ajax call as opposed to directly by typing in the url address into a browser?</p>
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