Added follow block.

assets/js/common/functionsSchema.js

@@ -1286,6 +1286,13 @@ var ComunicWeb = {
 				posts: {
 					//TODO : implement
 				},
+
+				/**
+				 * Follow block
+				 */
+				followBlock: {
+					//TODO : implement
+				},
 			},
 		},
 

assets/js/components/groups/interface.js

@@ -306,4 +306,21 @@ ComunicWeb.components.groups.interface = {
 		};
 		ComunicWeb.common.api.makeAPIrequest(apiURI, params, true, callback);
 	},
+
+	/**
+	 * Set whether a user is following a group or not
+	 * 
+	 * @param {Number} groupID The ID of the target group
+	 * @param {Boolean} follow
+	 * @param {Function} callback
+	 */
+	setFollowing: function(groupID, follow, callback){
+		//Perform the request over the API
+		var apiURI = "groups/set_following";
+		var params = {
+			groupID: groupID,
+			follow: follow
+		};
+		ComunicWeb.common.api.makeAPIrequest(apiURI, params, true, callback);
+	}
 };

assets/js/components/groups/utils.js

@@ -25,6 +25,19 @@ ComunicWeb.components.groups.utils = {
 
 	},
 
+	/**
+	 * Check whether a user is a member (or more) of a group or not
+	 * 
+	 * @param {Object} info Information about the target group
+	 * @return {boolean} TRUE if the user is a member of the group 
+	 * FALSE else
+	 */
+	isGroupMember: function(info){
+		return info.membership == "member" 
+			|| info.membership == "moderator" 
+			|| info.membership == "administrator";
+	},
+
 	/**
 	 * Check whether a user can create posts for a group or not
 	 * 

assets/js/pages/groups/sections/followBlock.js

@@ -0,0 +1,64 @@
+/**
+ * Group follow state update block
+ * 
+ * @author Pierre HUBERT
+ */
+
+ComunicWeb.pages.groups.sections.followBlock = {
+
+	/**
+	 * Display the block
+	 * 
+	 * @param {Object} info Information about the target group
+	 * @param {HTMLElement} target The target for the block
+	 */
+	display: function(info, target){
+		this._show_block(info.id, info.following, target);
+	},
+
+	/**
+	 * Display follow block
+	 * 
+	 * @param {Number} groupID The ID of the target group
+	 * @param {boolean} following TRUE if the user is following the group / FALSE else
+	 * @param {HTMLElement} target The target for the page
+	 */
+	_show_block: function(groupID, following, target){
+		
+		if(!target.className.includes("follow-group-btn"))
+			var followButton = createElem2({
+				appendTo: target,
+				type: "div",
+				class: "follow-group-btn a"
+			});
+		
+		else {
+			emptyElem(target);
+			var followButton = target;
+		}
+
+		//Adapt follow button content
+		followButton.innerHTML = following ? 
+			"<i class='fa fa-check'></i> Following" 
+			: "<i class='fa fa-newspaper-o'></i> Follow";
+
+		
+		//Make button lives
+		followButton.onclick = function(){
+
+			//Make a request on the API
+			ComunicWeb.components.groups.interface.setFollowing(groupID, !following, function(result){
+
+				//Check for errors
+				if(result.error)
+					return notify("Could not update your following status of the group!", "danger");
+
+				//Show block with new status
+				ComunicWeb.pages.groups.sections.followBlock._show_block(groupID, !following, followButton);
+			});
+
+
+		};
+	}
+
+};

assets/js/pages/groups/sections/header.js

@@ -155,6 +155,10 @@ ComunicWeb.pages.groups.sections.header = {
         //Display membership level
         if(signed_in())
             ComunicWeb.pages.groups.sections.membershipBlock.display(info, thirdColumn);
+        
+        //Display follow block
+        if(signed_in() && ComunicWeb.components.groups.utils.isGroupMember(info))
+            ComunicWeb.pages.groups.sections.followBlock.display(info, thirdColumn);
 
         //If the user is an admin, add a link to configure the page
         if(signed_in() && info.membership == "administrator"){

system/config/dev.config.php

@@ -442,6 +442,7 @@ class Dev {
 				"js/pages/groups/sections/header.js",
 				"js/pages/groups/sections/membershipBlock.js",
 				"js/pages/groups/sections/posts.js",
+				"js/pages/groups/sections/followBlock.js",
 
 
 			//User settings page