Javascript ExtJS:What'；这有什么意义？
我一直在试图弄清楚ExtJS4中需要做什么，但似乎找不到一个合理的答案。假设我有以下代码： app.jsJavascript ExtJS:What'；这有什么意义？,javascript,extjs,extjs4,extjs4.1,extjs-mvc,Javascript,Extjs,Extjs4,Extjs4.1,Extjs Mvc,我一直在试图弄清楚ExtJS4中需要做什么，但似乎找不到一个合理的答案。假设我有以下代码： app.js Ext.Loader.setConfig({ enabled: true }); Ext.Loader.setPath('Ext.ux', 'examples/ux'); Ext.application({ name: 'Test', appFolder: 'app', controllers: ['TheController'], requires: ['Test.
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
Test.Utils未定义，此时Test.Utils显然不存在，但Test.Utils2存在
我的问题是。。。为什么Utils2存在，而Utils不存在？我想我应该带上我需要的课程，这样我就可以使用它们了，但我想我错了。我已经阅读了Sencha文档和大量的线程，但是没有什么真正有意义的，它也没有真正解释这个例子。有人能在这里透露一些见解吗？我会很感激的
**另外，我意识到我在这里做了一些愚蠢的事情，但这只是一个例子，所以我不想结合全局util或根本不使用全局util。。。我只是想找出需要的选项
更新
多亏了伊扎基下面的回答，我想出了一些办法。如果我想在我定义的类中使用所需的类，我必须等待对象被创建（即，使用initComponent），因此我的存储和网格代码更改为：
app/store/TheStore.js
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
app/view/TheGrid.js
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'examples/ux');
Ext.application({
name: 'Test',
appFolder: 'app',
controllers: ['TheController'],
requires: ['Test.Utils', 'Test.Utils2'], // I don't think this does anything... couldn't find this option for Ext.application
launch: function() {
Ext.create('Ext.Viewport', {
layout: 'border',
items: [{
xtype: 'thegrid',
region: 'center',
title: 'blah!'
}]
});
}
});
Ext.define('Test.controller.TheController', {
extend: 'Ext.app.Controller',
models: ['TheModel'],
stores: ['TheStore'],
views: ['TheGrid'],
init: function() {
}
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
]
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel', 'Test.Utils'],
model: 'Test.model.TheModel',
data: [
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]
});
Ext.define('Test.model.TheModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'},
{name: 'phone', type: 'string'},
{name: 'hello', type: 'string'}
]
});
Ext.define('Test.Utils', {
singleton: true,
requires: ['Test.Utils2'],
getText: function() {
return Test.Utils2.hello + 'world';
}
});
Ext.define('Test.Utils2', {
singleton: true,
hello: 'hello'
});
Ext.define('Test.store.TheStore', {
extend: 'Ext.data.Store',
requires: ['Test.model.TheModel'],
model: 'Test.model.TheModel'
});
Ext.define('Test.view.TheGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.thegrid',
requires: ['Test.store.TheStore'],
store: 'TheStore',
columns: [
{header: 'Name', dataIndex: 'name'},
{header: 'Phone', dataIndex: 'phone'},
{header: 'Hello', dataIndex: 'hello'}
],
// This is the change that works
initComponent: function() {
this.callParent();
this.store.loadData([
{name: 'keanu reeves', phone: '1800matrices', hello: Test.Utils.getText()},
{name: 'james earl jones', phone: '1800starwar', hello: 'nothing here'},
{name: 'barack obama', phone: '1800prsidnt', hello: 'hello world'}
]);
}
});
这是可行的，但我的最后一个问题是。。。我是否必须在存储区和/或网格中存储模型的要求？看起来控制器正在处理所有这些需求，因为我可以在网格中使用Test.Utils，但是网格没有明确声明它需要Test.Utils
另外，Sencha文档让我更加困惑，因为在创建存储之前，我显然没有使用Test.Utils，但这个示例似乎可以使用子类，而不必等待它初始化（使用initComponent）。这实际上根本不是一个愚蠢的问题
您可以通过查看requires来告诉ExtJS：
“构造此类的对象时，请确保首先动态加载所需的脚本”
关于这一行，你是对的：
requires: ['Test.Utils', 'Test.Utils2'],
在app.js
中不需要，原因是应用程序已经有：
controllers: ['TheController'],
这与说您需要js脚本相同，在js脚本中，控制器
驻留（任何模型/视图/控制器/存储定义也意味着需要相关脚本，即将动态加载）
控制器
具有：
requires: ['Test.model.TheModel', 'Test.Utils'],
这将动态加载这些-这就是为什么相同的要求不需要它app.js
Firebug抛出的Test.Utils
未定义的原因是您提供了一个配置（hello
），其中引用了一个尚未动态加载的对象-在构建存储之前，范围内没有Test.Utils
如果没有它，很多人际关系就无法正常运作
它帮助JSBuilder知道要包含哪些文件。例如，如果视口使用边框布局，则将不正确地包含它，并且您必须使用或要求包含它
我喜欢这个答案，但还有一些事情没有解释清楚（请参阅问题的更新部分）。至于您的第一个新问题：您实际上不需要在存储中使用模型（特别是在您的模型配置中使用它，这与需要它相同，但您不需要使用requires获得setter和getter）。您也不需要在网格中有require—正如您所说，控制器负责所有这些。基本上，当应用程序启动时，它会动态加载并创建所有控制器的实例，以及相应配置对象中引用的所有模型/视图/存储。完成后，所有这些都进入范围（包括views xtypes）。您在文档中给出的示例完全正确，与getText中的Test.Util2相同-对这些对象的调用在函数调用中（而不是从配置对象中引用），因此只需要在创建类后加载它们，在那之前没有。对getText或giveBirth的调用只能在创建对象之后发生，而对象的创建又是在动态加载所需对象之后发生的。我认为这就解决了这个问题。谢谢你的解释！