roojs-ui.js

[roojs1] / Roo / data / JsonReader.js

diff --git a/Roo/data/JsonReader.js b/Roo/data/JsonReader.js
index 4efd1fb..98c8ce8 100644 (file)
--- a/Roo/data/JsonReader.js
+++ b/Roo/data/JsonReader.js
@@ -45,6 +45,7 @@ var myReader = new Roo.data.JsonReader({
  * @cfg {String} successProperty Name of the property from which to retrieve the success attribute used by forms.
  * @cfg {String} root name of the property which contains the Array of row objects.
  * @cfg {String} id Name of the property within a row object that contains a record identifier value.
+ * @cfg {Array} fields Array of field definition objects
  * @constructor
  * Create a new JsonReader
  * @param {Object} meta Metadata configuration options
@@ -66,6 +67,8 @@ Roo.data.JsonReader = function(meta, recordType){
 };
 Roo.extend(Roo.data.JsonReader, Roo.data.DataReader, {
     
+    readerType : 'Json',
+    
     /**
      * @prop {Boolean} metaFromRemote  - if the meta data was loaded from the remote source.
      * Used by Store query builder to append _requestMeta to params.
@@ -141,7 +144,7 @@ Roo.extend(Roo.data.JsonReader, Roo.data.DataReader, {
          */
         this.o = o;
         var s = this.meta, Record = this.recordType,
-            f = Record ? Record.prototype.fields : null, fi = f.items, fl = f.length;
+            f = Record ? Record.prototype.fields : null, fi = f ? f.items : [], fl = f ? f.length : 0;
 
 //      Generate extraction functions for the totalProperty, the root, the id, and for each field
         if (!this.ef) {
@@ -207,5 +210,13 @@ Roo.extend(Roo.data.JsonReader, Roo.data.DataReader, {
             records : records,
             totalRecords : totalRecords
         };
+    },
+    // used when loading children.. @see loadDataFromChildren
+    toLoadData: function(rec)
+    {
+       // expect rec just to be an array.. eg [a,b,c, [...] << cn ]
+       var data = typeof(rec.data.cn) == 'undefined' ? [] : rec.data.cn;
+       return { data : data, total : data.length };
+       
     }
 });
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