sencha touch change model data of store but load function not work

最新推荐文章于 2016-10-18 21:00:33 发布

躲不过这哀伤

最新推荐文章于 2016-10-18 21:00:33 发布

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原文链接：http://www.cnblogs.com/fengjian/archive/2013/03/22/2975051.html

本文探讨了在Sencha框架中如何解决修改Store内模型数据后仍能接收服务器新数据的问题。通过重写mergeData方法并调整判断逻辑，确保已手动修改的数据项能够在Store加载新数据时被覆盖。

In the process of my project development,I need to change data of model stored in store of one list,in order to refresh the list without any unnesscary ajax request.But after you changed the model in store,when your store load data again,the returned data can not bind to the store.It means that your store could not load new data from server,it show the modified data that you set manually.

Follows is the source code:

 1  mergeData: function(rawData) {
 2         var me = this,
 3             fields = me.getFields().items,
 4             ln = fields.length,
 5             data = me.data,
 6             i, field, fieldName, value, convert;
 7 
 8         for (i = 0; i < ln; i++) {
 9             field = fields[i];
10             fieldName = field.getName();
11             convert = field.getConvert();
12             value = rawData[fieldName];
13 
14             if (value !== undefined && !me.isModified(fieldName)) {//if field is modified,Sencha will do nothing and mantains the dirty data that you 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　//changed manually
15                 if (convert) {
16                     value = convert.call(field, value, me);
17                 }
18 
19                 data[fieldName] = value;
20             }
21         }
22 
23         return this;
24     },

    isModified : function(fieldName) {
        return this.modified.hasOwnProperty(fieldName);
    }

Sencha use this method to judge fields if not modified. And now we want the changed fields be bind data from server,so we just set model.modified={} after you change your data.It works well;

转载于:https://www.cnblogs.com/fengjian/archive/2013/03/22/2975051.html