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  • extjs model store学习笔记

    http://docs.sencha.com/extjs/6.2.0/guides/core_concepts/data_package.html

    // 定义一个Model
    Ext.define('MyApp.model.User', { extend: 'Ext.data.Model', fields: [ {name: 'name', type: 'string'}, {name: 'age', type: 'int'} ] });
    // 定义一个store
    Ext.define('MyApp.store.Users', { extend: 'Ext.data.Store', alias: 'store.users', model: 'MyApp.model.User', data : [ // Stores can also load data in-line. Internally, Store converts each of the objects we pass in as data into records of the appropriate Model type: {firstName: 'Seth', age: '34'}, {firstName: 'Scott', age: '72'}, {firstName: 'Gary', age: '19'}, {firstName: 'Capybara', age: '208'} ] });
    var store = Ext.create('Ext.data.ArrayStore', {
        // store configs
        storeId: 'myStore',
        // reader configs
        fields: [ // 可以直接定义fields,不必定义model
           'company',
           {name: 'price', type: 'float'},
           {name: 'change', type: 'float'},
           {name: 'pctChange', type: 'float'},
           {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
        ],
        data = [
            ['3m Co',71.72,0.02,0.03,'9/1 12:00am'],
            ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am'],
            ['Boeing Co.',75.43,0.53,0.71,'9/1 12:00am'],
            ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am'],
            ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am']
        ]    
    });
     
    Model中定义的Proxy是针对该model的CURD进行的操作。是针对单条记录的。也就是可以建立一个model的对象,通过proxy提交到后台
    Store中定义的Proxy是针对model集合的查询操作。

    Models are typically used with a Store, which is basically a collection of records (instances of a Model-derived class)


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  • 原文地址:https://www.cnblogs.com/coolzdp/p/7384670.html
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