LT-253: Creating dynamic form components

Packages/ohif-core/helpers/data.js

@@ -0,0 +1,59 @@
+import { _ } from 'meteor/underscore';
+import { Template } from 'meteor/templating';
+
+/**
+ * Global Blaze UI helpers to manipulate data
+ */
+
+// Base extend function to be used by extend and clone helpers
+const extend = (...argsArray) => {
+    // Create the resulting object
+    const result = argsArray[0] || {};
+
+    // Extract the Spacebars kw hash
+    const kwHash = _.last(argsArray).hash;
+
+    // Extract the given objects
+    const objects = _.initial(argsArray);
+
+    // Iterate over the given objects
+    _.each(objects, current => {
+        // Stop here if the current argument is not an object
+        if (typeof current !== 'object') {
+            return;
+        }
+
+        // Extend the resulting object with the current argument object
+        _.extend(result, current);
+    });
+
+    // Extend the resulting object with the Spacebars kw hash
+    _.extend(result, kwHash);
+
+    // Return the resulting object
+    return result;
+};
+
+// Extend the first argument object it with the other argument objects
+Template.registerHelper('extend', (...argsArray) => {
+    return extend(...argsArray);
+});
+
+// Create a new object and extends it with the argument objects
+Template.registerHelper('clone', (...argsArray) => {
+    const newArgs = argsArray.slice();
+    newArgs.unshift({});
+    return extend(...newArgs);
+});
+
+// Return the first thrut value in the given arguments
+Template.registerHelper('choose', (...argsArray) => {
+    // Iterate over the given objects
+    for (let i = 0; i < argsArray.length; i++) {
+        // Check if the current value is truth
+        if (!!argsArray[i]) {
+            // Return the current value
+            return argsArray[i];
+        }
+    }
+});