Make a request on the server to cancel survey response.

assets/css/components/posts/ui.css

@@ -73,10 +73,18 @@
 	padding: 10px;
 }
 
+
+/**
+ * Survey specific rules
+ */
 .post .post-survey-question {
 	text-align: center;
 }
 
 .post .post-survey-chart-contener {
 	margin-bottom: 10px;
+}
+
+.post .survey-given-response {
+	text-align: center;
 }

assets/js/components/posts/interface.js

@@ -127,4 +127,23 @@ ComunicWeb.components.posts.interface = {
 
 	},
 
+	/**
+	 * Cancel a response to a survey
+	 * 
+	 * @param {int} postID The ID of the target post
+	 * @param {function} callback This function is called once we got a response
+	 */
+	cancel_survey_response: function(postID, callback){
+
+		//Prepare an API request
+		apiURI = "surveys/cancel_response";
+		params = {
+			postID: postID
+		};
+
+		//Perform the request
+		ComunicWeb.common.api.makeAPIrequest(apiURI, params, true, callback);
+
+	}
+
 }

assets/js/components/posts/ui.js

@@ -439,6 +439,12 @@ ComunicWeb.components.posts.ui = {
 				class: "post-survey-question"
 			});
 
+			//Answer contener
+			var surveyResponse = createElem2({
+				appendTo: postRoot,
+				type: "div",
+			});
+
 			//Create row
 			var row = createElem2({
 				appendTo: postRoot,
@@ -574,6 +580,57 @@ ComunicWeb.components.posts.ui = {
 
 			}
 
+			//Display survey response options if the user is signed in
+			if(signed_in()){
+
+				//Check if the user gave a response to the survey
+				if(infos.data_survey.user_choice != 0){
+					
+					//Create a text to display user choice
+					var choosedResponseElem = createElem2({
+						appendTo: surveyResponse,
+						class: "survey-given-response",
+						type: "p",
+						innerHTML: "Your response: " + infos.data_survey.choices[infos.data_survey.user_choice].name + " "
+					});
+
+					//Offer the user to cancel his choice
+					var cancelReponseLink = createElem2({
+						appendTo: choosedResponseElem,
+						type: "a",
+						innerHTML: "Cancel"
+					});
+
+					//Make cancel button lives
+					cancelReponseLink.onclick = function(){
+
+						ComunicWeb.common.messages.confirm("Do you really want to cancel your response to the survey ?", function(confirm){
+
+							//Check if the user cancelled
+							if(!confirm)
+								return;
+							
+							//Make a request on the server
+							ComunicWeb.components.posts.interface.cancel_survey_response(infos.ID, function(response){
+
+								//Check for errors
+								if(response.error){
+									ComunicWeb.common.notificationSystem.showNotification("Could not cancel response to survey !", "danger");
+									return;
+								}
+
+								//Reload post
+								ComunicWeb.components.posts.actions.reload_post(infos.ID, postRoot);
+
+							});
+
+						});
+
+					}
+				}
+
+
+			}
 		}
 
 		//If the kind of post was not implemented