使用Extjs 4.2
我已经阅读了很多文档,谷歌,论坛试图了解组件如何加载以及放置它们的位置,例如商店,模型等,但仍然困惑。
这是我试图开始工作的一个例子
申请说明
主菜单包含联系人,项目,人员等,应用程序首先加载以显示静态非数据驱动,然后使用点击联系人显示带有联系人列表的网格。然后,用户单击联系人行,并显示弹出编辑视图。
在contactitview中,联系人已加载到表单中,此外表单还有一个加载ContactTypes商店的组合框。 ContactType应设置为该联系人记录的contacttype值。
这是一个常见的方法,考虑到这是一个大型应用程序,我只想在需要时加载数据,即显示视图。
以下是我的一些困惑
您可以在应用配置中定义所有控制器,商店,模型,视图,但无论您正在查看哪个页面,都会加载所有内容。此外,如果您的商店中有autoLoad:true,那么即使您没有查看该特定视图,也会对数据库进行所有商店的调用。
在控制器的stores或models属性中指定商店或模型时,具体做什么?它只是让你轻松引用商店而不是实际创建它或创建它,还是只是设置getter和setter函数以方便使用。例如,如果我在控制器的store属性中指定了一个商店,并且autoLoad为true,则加载所有数据而不需要执行任何其他操作。但我真正想要的是,只有当我点击“联系人”并且显示列表视图时才会加载该商店。所以我设置autoLoad:false并在我的list函数中使用this.getStore('Contacts')
手动获取存储。这很好用,但是使用store和models的控件的数组属性的目的是什么。我在调试器中看到,如果我不使用存储/模型属性,则会对这些js文件发出get请求。
对不起,我知道这很多,但对我来说很困惑,并且已经挣扎了一段时间。
最后,只有当您通过设置autoLoad:false并手动加载来单击“联系人”按钮时,才会加载联系人网格。现在,当用户单击编辑时,记录加载正常,但如何加载组合框然后选择正确的值。我认为我的部分问题是了解商店模型如何加载和实例化。在我的组合框存储属性中,我已将ContactType指定为存储,但我得到错误存储未定义,因此未加载js文件或未实例化存储。
到目前为止,这是我的代码。
应用代码
Ext.Loader.setConfig({
enabled: true,
paths: {
'Ext.ux': "lib/extux",
'Wakanda': "lib/extux/wakanda"
}
});
Ext.application({
name: 'SimplyFundraising',
autoCreateViewport: true,
requires: ['Ext.ux.Router', // Require the UX
'Wakanda.model'
],
controllers: ['Contacts'],
});
联系人控制器
Ext.define('SimplyFundraising.controller.Contacts', {
extend: 'Ext.app.Controller',
views: ['contacts.List', 'contacts.Edit'],
init: function() {
this.control({
'contactslist': {
itemdblclick: this.editContact,
removeitem: this.removeContact
},
'contactslist > toolbar > button[action=create]': {
click: this.onCreateContact
},
// 'contactsadd button[action=save]': {
// click: this.doCreateContact
// },
'contactsedit button[action=save]': {
click: this.updateContact
}
});
},
list: function() {
var mystore = this.getStore('Contacts')
mystore.load();
// mystore.proxy.extraParams = { $expand: 'ContactType'};
// var User = this.getContactModel();
// User.load(258, {
// success: function (user) {
// console.log("Loaded user 258: " + user.get('lastName'));
// }
// });
},
editContact: function(grid, record) {
var view = Ext.widget('contactsedit');
view.down('form').loadRecord(record);
this.addnew = false
},
removeContact: function(Contact) {
Ext.Msg.confirm('Remove Contact ' + Contact.data.lastName, 'Are you sure?', function(button) {
if (button == 'yes') {
this.getContactsStore().remove(Contact);
}
}, this);
},
onCreateContact: function() {
var view = Ext.widget('contactsedit');
this.addnew = true
},
// doCreateContact: function (button) {
// var win = button.up('window'),
// form = win.down('form'),
// values = form.getValues(),
// store = this.getContactsStore();
// if (form.getForm().isValid()) {
// store.add(values);
// win.close();
// }
// },
updateContact: function(button) {
var win = button.up('window'),
form = win.down('form'),
record = form.getRecord(),
values = form.getValues(),
store = this.getContactsStore();
if (form.getForm().isValid()) {
if (this.addnew == true) {
store.add(values);
} else {
record.set(values);
}
win.close();
}
}
});
联系人视图列表
Ext.define('SimplyFundraising.view.contacts.List', {
extend: 'Ext.grid.Panel',
xtype: 'contactslist',
title: 'All Contacts',
store: 'Contacts',
autoHeight: true,
autoScroll: true,
viewConfig: {
loadMask: true
},
initComponent: function() {
this.tbar = [{
text: 'Create Contact',
action: 'create'
}];
this.columns = [{
header: 'Id',
dataIndex: '__KEY',
width: 50
}, {
header: 'First Name',
dataIndex: 'firstName',
flex: 1
}, {
header: 'Middle Name',
dataIndex: 'middleName',
flex: 1
}, {
header: 'Last Name',
dataIndex: 'lastName',
flex: 1
},
{
header: 'Type',
dataIndex: 'ContactType.name',
flex: 1
}
];
this.addEvents('removeitem');
this.actions = {
removeitem: Ext.create('Ext.Action', {
text: 'Remove Contact',
handler: function() {
this.fireEvent('removeitem', this.getSelected())
},
scope: this
})
};
var contextMenu = Ext.create('Ext.menu.Menu', {
items: [this.actions.removeitem]
});
this.on({
itemcontextmenu: function(view, rec, node, index, e) {
e.stopEvent();
contextMenu.showAt(e.getXY());
return false;
}
});
this.callParent(arguments);
},
getSelected: function() {
var sm = this.getSelectionModel();
var rs = sm.getSelection();
if (rs.length) {
return rs[0];
}
return null;
}
});
通讯录视图编辑
Ext.define('SimplyFundraising.view.contacts.Edit', {
extend: 'Ext.window.Window',
xtype: 'contactsedit',
title: 'Edit Contacts',
layout: 'fit',
autoShow: true,
initComponent: function() {
this.items = [{
xtype: 'form',
bodyStyle: {
background: 'none',
padding: '10px',
border: '0'
},
items: [{
xtype: 'textfield',
name: 'firstName',
allowBlank: false,
fieldLabel: 'Name'
}, {
xtype: 'textfield',
name: 'lastName',
allowBlank: false,
fieldLabel: 'Last Name'
}, {
xtype: 'combobox',
fieldLabel: 'Contact Type',
name: 'contactType',
store: 'ContactTypes',
displayField: 'name',
typeAhead: true,
queryMode: 'local',
emptyText: 'Select a type...'
}]
}];
this.buttons = [{
text: 'Save',
action: 'save'
}, {
text: 'Cancel',
scope: this,
handler: this.close
}];
this.callParent(arguments);
}
});
答案 0 :(得分:2)
不要错过ExtJs。我知道,这可能是一种痛苦......
对于你的问题,我这样解决了:
我有一个列出意大利市政当局的网格。我想按国家,地区和省份进行过滤,因此我将三个组合框放在一个停靠的容器上。在控制器中我有:
,init : function (application) {
this.control({
,"#municipalitiesGrid": { afterrender: this.onMunicipalitiesGridAfterRender }
});
}
,onMunicipalitiesGridAfterRender: function(grid, opts) {
console.info('GVD.controller.Geo->onMunicipalitiesGridAfterRender');
var store = grid.getStore(),
comboCountriesMunicipalities = this.getComboCountriesMunicipalities(),
storeCountries = comboCountriesMunicipalities.getStore(),
comboRegionsMunicipalities = this.getComboRegionsMunicipalities(),
storeRegions = comboRegionsMunicipalities.getStore(),
comboProvincesMunicipalities = this.getComboProvincesMunicipalities(),
storeProvinces = comboProvincesMunicipalities.getStore();
store.clearFilter(true);
storeCountries.clearFilter(true);
storeRegions.clearFilter(true);
storeProvinces.clearFilter(true);
storeRegions.filter("idCountry", 114); // 114 = Italia
storeProvinces.filter("idRegion",8); // 8 = Emilia Romagna
store.filter("idProvince", 37); // 37 = Bologna
storeCountries.load({
scope: this,
callback: function(records, operation, success) {
storeRegions.load({
scope: this,
callback: function(records, operation, success) {
storeProvinces.load({
scope: this,
callback: function(records, operation, success) {
store.load({
scope: this,
callback: function(records, operation, success) {
comboCountriesMunicipalities.setValue(114); // 114 = Italia
comboRegionsMunicipalities.setValue(8); // 8 = Emilia Romagna
comboProvincesMunicipalities.setValue(37); // 37 = Bologna
}
});
}
});
}
});
}
});
}
在控制器中,当然,我还有其他组合框的'select'事件,所以我可以根据所选的值过滤和重新加载组合。
按照MVC模式,我的商店与此类似:
Ext.define('GVD.store.Municipalities', {
extend: 'Ext.data.Store'
,constructor: function(cfg) {
console.info('GVD.store.Municipalities->constructor');
var me = this;
cfg = cfg || {};
me.callParent([Ext.apply({
autoLoad: false
,autoSync: true
,model: 'GVD.model.Municipalities'
,pageSize: 20
}, cfg)]);
}
});
和类似的模型:
Ext.define('GVD.model.Municipalities', {
extend: 'Ext.data.Model',
fields: [
{ name: 'id', type: 'int' },
{ name: 'idIstat', type: 'int' },
{ name: 'idCountry', type: 'int' },
{ name: 'idRegion', type: 'int' },
{ name: 'idProvince', type: 'int' },
{ name: 'name', type: 'string' },
{ name: 'chief_town', type: 'boolean' },
{ name: 'altitude_zone', type: 'int' },
{ name: 'altitude', type: 'int' },
{ name: 'coastal', type: 'int' },
{ name: 'mountain', type: 'int' },
{ name: 'surface', type: 'double' },
{ name: 'residents', type: 'int' },
{ name: 'icon', type: 'string' }
]
,proxy: {
api: {
create: 'Municipalities.create'
,destroy: 'Municipalities.destroy'
,read: 'Municipalities.read'
,update: 'Municipalities.update'
}
,reader: {
root: 'data'
,totalProperty: 'totalCount'
,type: 'json'
}
,type: 'direct'
}
});
在我的网格中以这种方式引用:
Ext.define('GVD.view.system.geo.ListMunicipalities', {
autoScroll: true
,constrain: true
,dockedItems: [{
xtype: 'topBar'
},{
items: [{
allowBlank: true
,fieldLabel: 'Nazione'
,flex: 1
,id: 'comboCountriesMunicipalities'
,labelAlign: 'right'
,labelWidth: 50
,listConfig: {
getInnerTpl: function() {
return '<img src="resources/images/countries/16/{icon}16.gif" align="left"> {italianName}';
}
}
,store: Ext.create('GVD.store.Countries', {pageSize: 999})
,xtype: 'comboCountries'
},{
allowBlank: true
,fieldLabel: 'Regione'
,flex: 1
,id: 'comboRegionsMunicipalities'
,labelAlign: 'right'
,labelWidth: 50
,listConfig: {
getInnerTpl: function() {
return '<img src="resources/images/regions/16/{icon}16.gif" align="left"> {name}';
}
}
,store: Ext.create('GVD.store.Regions', {pageSize: 999})
,xtype: 'comboRegions'
},{
allowBlank: true
,fieldLabel: 'Provincia'
,flex: 1
,id: 'comboProvincesMunicipalities'
,labelAlign: 'right'
,labelWidth: 50
,listConfig: {
getInnerTpl: function() {
return '<img src="resources/images/provinces/16/{icon}16.gif" align="left"> {name}';
}
}
,store: Ext.create('GVD.store.Provinces', {pageSize: 999})
,xtype: 'comboProvinces'
}]
,layout: 'hbox'
,xtype: 'container'
}, {
dock: 'bottom'
,itemId: 'municipalitiesPagingToolbar'
,store: 'Municipalities'
,xtype: 'pagingToolBar'
}]
,extend: 'Ext.window.Window'
,height: 400
,icon: 'resources/images/GVD/municipalities16.png'
,id: 'listMunicipalities'
,items: [{
columns: [{
xtype: 'rownumberer'
},{
align: 'right'
,dataIndex: 'id'
,format: '000'
,renderer: function(value, metaData, record, rowIndex, colIndex, store, view) {
return '<img src="resources/images/municipalities/16/'+record.data.icon+'16.gif" align="left"> '+record.data.id;
}
,text: 'Id'
,width: 70
,xtype: 'numbercolumn'
},{
align: 'right'
,dataIndex: 'idIstat'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '000000000'
,text: 'Istat'
,width: 80
,xtype: 'numbercolumn'
},{
dataIndex: 'name'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'string' }
,flex: 1
,text: 'Denominazione'
,xtype: 'gridcolumn'
},{
dataIndex: 'chief_town'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,text: 'Capoluogo'
,width: 40
,xtype: 'numbercolumn'
},{
dataIndex: 'altitude_zone'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '0'
,text: 'Zona alt.'
,width: 40
,xtype: 'numbercolumn'
},{
align: 'right'
,dataIndex: 'altitude'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '0000'
,text: 'Altitudine'
,width: 40
,xtype: 'numbercolumn'
},{
dataIndex: 'coastal'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '0'
,text: 'Costiero'
,width: 40
,xtype: 'numbercolumn'
},{
dataIndex: 'mountain'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '0'
,text: 'Montano'
,width: 40
,xtype: 'numbercolumn'
},{
align: 'right'
,dataIndex: 'surface'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '000,000.00'
,text: 'Superficie'
,xtype: 'numbercolumn'
},{
align: 'right'
,dataIndex: 'residents'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'numeric' }
,format: '0,000,000'
,text: 'residenti'
,xtype: 'numbercolumn'
},{
dataIndex: 'icon'
,editor: { allowBlank: false, selectOnFocus: true }
,filter: { type: 'string' }
,flex: 1
,text: 'Icona'
,xtype: 'gridcolumn'
}]
,columnLines: true
,emptyText: '<font color="red"><b>Nessun comune in archivio</b></font>'
,features: [
Ext.create('GVD.ux.grid.FiltersFeature', {
encode: true,
ftype: 'filters',
local: false,
menuFilterText: 'Filtro'
})
]
,id: 'municipalitiesGrid'
,plugins: [ Ext.create('Ext.grid.plugin.RowEditing', { ptype: 'rowediting' }) ]
,selModel: { selType: 'checkboxmodel', mode: 'MULTI' },store: 'Provinces'
,store: 'Municipalities'
,viewConfig: {
loadingText: 'Caricamento dati'
,stripeRows: true
,trackOver: true
}
,xtype: 'grid'
}]
,layout: {
align: 'stretch'
,type: 'vbox'
}
,margin: '0 0 2 0'
,maximizable: true
,minimizable: true
,requires: [
'GVD.ux.combo.Countries'
,'GVD.ux.combo.Provinces'
,'GVD.ux.combo.Regions'
,'GVD.ux.PrintButton'
,'GVD.ux.toolbar.BottomBar'
,'GVD.ux.toolbar.PagingToolBar'
,'GVD.ux.toolbar.TopBar'
]
,singleWindow: true
,title: 'Elenco comuni'
,tools: [
{ xtype: 'printButton', title: 'Elenco Comuni', tooltip: 'Stampa elenco' }
,{ type: 'help', xtype: 'tool', tooltip: 'Guida sulla funzione' }
]
,width: 760
});
希望这可以提供帮助。
再见