Ext.data.Model.load doesn't take car of 'idProperty' of the model

The problem can appear with extended store, the 'load' function doesn't take care of 'idProperty' define in your model. You have to override 'load' method but be careful to look at mapping property of the identity field!

load: function (id, config){        config = Ext.apply({}, config);         var me = this ,               params={},               fields = me.getFields(),               nameProperty = me.nameProperty,               field,               fieldName,               i;                 // get field of idProperty         for (i=fields.length-1;i>=0;i--){                if (fields[i].name == me.prototype.idProperty){                      field = fields[i];                       break ;               }        }         // get the field name         if (field){               fieldName = field[nameProperty] || field.mapping || field.name;        } else {               fieldName = me.prototype.idProperty;        }         // set identity param        params[fieldName] = id;        config = Ext.applyIf(config, {               action: 'read',               params: params        });         var operation = Ext.create('Ext.data.Operation' , config),               scope = config.scope || me,               record,               callback;        callback = function (operation) {                if (operation.wasSuccessful()) {                      record = operation.getRecords()[0];                      Ext.callback(config.success, scope, [record, operation]);               } else {                      Ext.callback(config.failure, scope, [record, operation]);               }               Ext.callback(config.callback, scope, [record, operation]);        };        me.proxy.read(operation, callback, me); }