change getContent behaviour: set empty object/array for required...

change getContent behaviour: set empty object/array for required properties/items if parent object/array existed

it allow create json document more schema compatible without additional user inputs

jsonform/gadget_json_generated_form_child.js

@@ -1482,7 +1482,7 @@
 
   function getFormValuesAsJSONDict(g) {
     var multi_level_dict = {"": {}},
-      count_of_values = 0,
+      is_empty = true,
       scope,
       options = g.props,
       array,
@@ -1490,6 +1490,7 @@
       key,
       i,
       len,
+      json_dict = {},
       queue = RSVP.Queue();
 
     function convertOnMultiLevel(d, key, value) {
@@ -1501,19 +1502,29 @@
         if (ii === key_list.length - 1) {
           if (value !== undefined) {
             d[kk] = value;
-            count_of_values += 1;
+            is_empty = false;
           } else {
             return d[kk];
           }
         } else {
           if (!d.hasOwnProperty(kk)) {
+            if (value !== undefined) {
               d[kk] = {};
+            } else {
+              return;
+            }
           }
           d = d[kk];
         }
       }
     }
 
+    function check_parent_path_not_empty(path) {
+      var key_list = path.split("/"),
+        parent_path = key_list.slice(0, key_list.length - 1).join("/");
+      return convertOnMultiLevel(multi_level_dict, parent_path) !== undefined;
+    }
+
     function recursiveGetContent(scope, path) {
       queue
         .push(function () {
@@ -1551,21 +1562,43 @@
         });
     }
 
-
-    // set empty object/array for required properties/items
-    array = g.element
-      .querySelectorAll("div[data-parent-scope='" +
-                        g.element.getAttribute("data-gadget-scope") + "']");
-    for (i = 0; i < array.length; i += 1) {
-      path = array[i].getAttribute("data-json-path").slice(0, -1);
-      if (array[i].hasAttribute("data-json-required")) {
-        if (array[i].getAttribute("data-json-type") === "object") {
-          convertOnMultiLevel(multi_level_dict, path, {});
+    g.props.inputs.forEach(function (input) {
+      if (input.hasAttribute('data-origin-value')) {
+        json_dict[input.name] = JSON.parse(input.getAttribute('data-origin-value'));
       } else {
-          convertOnMultiLevel(multi_level_dict, path, []);
+        if (input.value !== "") {
+          var type = input.getAttribute('data-json-type');
+          if (input.tagName === "SELECT" && input.value) {
+            // selection used for enums
+            json_dict[input.name] = JSON.parse(input.value);
+          } else if (type === 'number') {
+            json_dict[input.name] = parseFloat(input.value);
+          } else if (type === "integer") {
+            json_dict[input.name] = parseInt(input.value, 10);
+          } else if (type === "boolean") {
+            if (input.value === "true") {
+              json_dict[input.name] = true;
+            } else if (input.value === "false") {
+              json_dict[input.name] = false;
+            }
+          } else if (input.tagName === "TEXTAREA") {
+            if (input["data-format"] === "string") {
+              json_dict[input.name] = input.value;
+            } else {
+              json_dict[input.name] = input.value.split('\n');
+            }
+          } else {
+            json_dict[input.name] = input.value;
           }
         }
       }
+    });
+    for (path in json_dict) {
+      if (json_dict.hasOwnProperty(path)) {
+        convertOnMultiLevel(multi_level_dict, path, json_dict[path]);
+      }
+    }
+
 
     for (path in options.arrays) {
       if (options.arrays.hasOwnProperty(path)) {
@@ -1601,45 +1634,26 @@
 
     return queue
       .push(function () {
-        var json_dict = {},
-          k;
-        g.props.inputs.forEach(function (input) {
-          if (input.hasAttribute('data-origin-value')) {
-            json_dict[input.name] = JSON.parse(input.getAttribute('data-origin-value'));
-          } else {
-            if (input.value !== "") {
-              var type = input.getAttribute('data-json-type');
-              if (input.tagName === "SELECT" && input.value) {
-                // selection used for enums
-                json_dict[input.name] = JSON.parse(input.value);
-              } else if (type === 'number') {
-                json_dict[input.name] = parseFloat(input.value);
-              } else if (type === "integer") {
-                json_dict[input.name] = parseInt(input.value, 10);
-              } else if (type === "boolean") {
-                if (input.value === "true") {
-                  json_dict[input.name] = true;
-                } else if (input.value === "false") {
-                  json_dict[input.name] = false;
-                }
-              } else if (input.tagName === "TEXTAREA") {
-                if (input["data-format"] === "string") {
-                  json_dict[input.name] = input.value;
-                } else {
-                  json_dict[input.name] = input.value.split('\n');
-                }
+        // set empty object/array for required properties/items
+        // if parent object/array existed
+        array = g.element
+          .querySelectorAll("div[data-parent-scope='" +
+                            g.element.getAttribute("data-gadget-scope") + "']");
+        for (i = 0; i < array.length; i += 1) {
+          path = array[i].getAttribute("data-json-path").slice(0, -1);
+          if (check_parent_path_not_empty(path) &&
+              convertOnMultiLevel(multi_level_dict, path) === undefined) {
+            if (array[i].hasAttribute("data-json-required")) {
+              if (array[i].getAttribute("data-json-type") === "object") {
+                convertOnMultiLevel(multi_level_dict, path, {});
               } else {
-                json_dict[input.name] = input.value;
+                convertOnMultiLevel(multi_level_dict, path, []);
               }
             }
           }
-        });
-        for (k in json_dict) {
-          if (json_dict.hasOwnProperty(k)) {
-            convertOnMultiLevel(multi_level_dict, k, json_dict[k]);
         }
-        }
-        if (count_of_values === 0) {
+
+        if (is_empty) {
           switch (g.props.type) {
           case "string":
             return "";