Merge pull request pencilblue#1243 from lgenet/ts-register-for-each

Template Service - Register Locals for Each

include/service/entities/template_service.js

@@ -631,6 +631,42 @@ module.exports = function(pb) {
         return true;
     };
 
+    /**
+     * Takes in the below parameters and returns a single TemplateValue that is the combination of
+     * all items in list, after being ran through the renderFunction.
+     *
+     * @param list - The list of data to be used
+     * @param renderFunction - A function that each item in the list will be ran against
+     * @param cb - yields error if one occurred, or a single TemplateValue that is the join of
+     *              all values that were returned by the render function
+     * @returns {*}
+     */
+    TemplateService.prototype.registerLocalForEach = function (list, renderFunction, processFunc, cb) {
+        // Handle Optional processFunction
+        if(!cb){
+            cb = processFunc;
+            processFunc = function(e) {return e;};
+        }
+
+        if (!list) {
+            return cb(null, '');
+        }
+        else if (!util.isArray(list)) {
+            list = [list];
+        }
+
+        var tasks = pb.util.getTasks(list, function (item, i) {
+            return function (callback) {
+                renderFunction(item[i], callback);
+            };
+        });
+
+        async.parallel(tasks, function (err, results) {
+            results = processFunc(results);
+            cb(err, new pb.TemplateValue(results.join(''), false));
+        });
+    };
+
     /**
      * Registers a model with the template service.  It processes each
      * key/value pair in the object and creates a dot notated string