Impossible de charger le fichier JSON

Question

Bonjour J'essaie de charger un fichier JSON local dans Sencha Touch 2. J'utilise Phonegap 1.4 et iOS 5, testant dans VM.

Voici le code:

Ext.define("User", { 
       extend: 'Ext.data.Model', 
       config: { 
       fields: [ 
          'id', 'name' 
          ], 

       hasMany: {model: 'Order', name: 'orders'}, 

       proxy: { 
        type: 'ajax', 
        url : 'users.json', 
        reader: { 
         type: 'json', 
         root: 'users' 
        } 
       } 
       } 
       }); 

     Ext.define("Order", { 
       extend: 'Ext.data.Model', 
       config: { 
       fields: [ 
          'id', 'total' 
          ], 

       hasMany : {model: 'OrderItem', name: 'orderItems', associationKey: 'order_items'}, 
       belongsTo: 'User' 
       } 
       }); 

     Ext.define("OrderItem", { 
       extend: 'Ext.data.Model', 
       config: { 
       fields: [ 
          'id', 'price', 'quantity', 'order_id', 'product_id' 
          ], 

       belongsTo: ['Order', {model: 'Product', associationKey: 'product'}] 
       } 
       }); 

     Ext.define("Product", { 
       extend: 'Ext.data.Model', 
       fields: [ 
          'id', 'name' 
          ], 

       hasMany: 'OrderItem' 
       }); 
     var store = Ext.create('Ext.data.Store', { 
          model: "User"    
     }); 


     store.load({ 
       callback: function() { 
       //the user that was loaded 
       var user = store.first(); 

       //console.log("Orders for " + user.get('name') + ":") 
       alert(user.get('name')); 

       //iterate over the Orders for each User 
       user.orders().each(function(order) { 
            console.log("Order ID: " + order.getId() + ", which contains items:"); 

            //iterate over the OrderItems for each Order 
            order.orderItems().each(function(orderItem) { 
                  //we know that the Product data is already loaded, so we can use the synchronous getProduct 
                  //usually, we would use the asynchronous version (see Ext.data.association.BelongsTo) 
                  var product = orderItem.getProduct(); 


                  }); 
            }); 
       } 
       }); 

Le fichier JSON:

{ 
"users": [ 
      { 
      "id": 123, 
      "name": "Ed", 
      "orders": [ 
        { 
        "id": 50, 
        "total": 100, 
        "order_items": [ 
            { 
            "id"  : 20, 
            "price" : 40, 
            "quantity": 2, 
            "product" : { 
            "id": 1000, 
            "name": "MacBook Pro" 
            } 
            }, 
            { 
            "id"  : 21, 
            "price" : 20, 
            "quantity": 3, 
            "product" : { 
            "id": 1001, 
            "name": "iPhone" 
            } 
            } 
            ] 
        } 
        ] 
      } 
      ] 
} 

L'alerte dit 'non défini', toute aide? Merci beaucoup

Answer 1

Dans Sencha Touch 2, l'objet lecteur doit utiliser rootProperty au lieu de root.