fix missing fields/meta data

[roojs1] / Roo / data / JsonReader.js

diff --git a/Roo/data/JsonReader.js b/Roo/data/JsonReader.js
index 361b361..e325149 100644 (file)
--- a/Roo/data/JsonReader.js
+++ b/Roo/data/JsonReader.js
@@ -67,6 +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.
@@ -185,19 +187,27 @@ Roo.extend(Roo.data.JsonReader, Roo.data.DataReader, {
         }
         var records = [];
         for(var i = 0; i < c; i++){
-                var n = root[i];
+            var n = root[i];
             var values = {};
             var id = this.getId(n);
             for(var j = 0; j < fl; j++){
                 f = fi[j];
-            var v = this.ef[j](n);
-            if (!f.convert) {
-                Roo.log('missing convert for ' + f.name);
-                Roo.log(f);
-                continue;
-            }
-            values[f.name] = f.convert((v !== undefined) ? v : f.defaultValue);
+                               var v = this.ef[j](n);
+                               if (!f.convert) {
+                                       Roo.log('missing convert for ' + f.name);
+                                       Roo.log(f);
+                                       continue;
+                               }
+                               values[f.name] = f.convert((v !== undefined) ? v : f.defaultValue);
             }
+                       if (!Record) {
+                               return {
+                                       raw : { errorMsg : "JSON Reader Error: fields or metadata not available to create Record" },
+                                       success : false,
+                                       records : [],
+                                       totalRecords : 0
+                               };
+                       }
             var record = new Record(values, id);
             record.json = n;
             records[i] = record;
@@ -208,5 +218,13 @@ 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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