分类: JavaScript
2013-07-05 10:14:06
最简单的提交数据到服务器端的办法就是设置BasicForm的url配置,因为Form Panel封装了BasicForm,这个url直接配置给Form Panel亦可,它会透传给BasicForm的。
Ext.create('Ext.form.Panel', {
...
url: 'add_user',
items: [
...
]
});
BasicForm的submit方法可以把数据提交到配置的url上:
Ext.create('Ext.form.Panel', {
...
url: 'add_user',
items: [
...
],
buttons: [
{
text: 'Submit',
handler: function() {
var form = this.up('form').getForm(); // get the basic form
if (form.isValid()) { // make sure the form contains valid data before submitting
form.submit({
success: function(form, action) {
Ext.Msg.alert('Success', action.result.msg);
},
failure: function(form, action) {
Ext.Msg.alert('Failed', action.result.msg);
}
});
} else { // display error alert if the data is invalid
Ext.Msg.alert('Invalid Data', 'Please correct form errors.')
}
}
}
]
});
上面的例子中,button配置了一个处理函数用来处理表单提交,处理函数中做了下面几个动作:
像例子中的表单提交,期望服务器端返回的值,应该像这样:
{ "success": true, "msg": "User added successfully" }
2、
Binding a Form to a Model 如何绑定表单和模型
ExtJS中,模型用来定义各种数据,也可以加载和保存数据到服务器。例如一个User模型需要定义User的字段,同时也可以设置代理用来加载和保存数据:
Ext.define('User', {
extend: 'Ext.data.Model',
fields: ['firstName', 'lastName', 'birthDate'],
proxy: {
type: 'ajax',
api: {
read: 'data/get_user',
update: 'data/update_user'
},
reader: {
type: 'json',
root: 'users'
}
}
});
有关模型的更多内容请查看<>
数据可以通过loadRecord方法直接从Model加载进入Form Panel:
Ext.ModelMgr.getModel('User').load(1, { // load user with ID of "1"
success: function(user) {
userForm.loadRecord(user); // when user is loaded successfully, load the data into the form
}
});
最后,代替submit方法,可以使用BasicForm的updateRecord方法更新form绑定的model,然后用Model的save方法保存数据:
Ext.create('Ext.form.Panel', {
...
url: 'add_user',
items: [
...
],
buttons: [
{
text: 'Submit',
handler: function() {
var form = this.up('form').getForm(), // get the basic form
record = form.getRecord(); // get the underlying model instance
if (form.isValid()) { // make sure the form contains valid data before submitting
form.updateRecord(record); // update the record with the form data
record.save({ // save the record to the server
success: function(user) {
Ext.Msg.alert('Success', 'User saved successfully.')
},
failure: function(user) {
Ext.Msg.alert('Failure', 'Failed to save user.')
}
});
} else { // display error alert if the data is invalid
Ext.Msg.alert('Invalid Data', 'Please correct form errors.')
}
}
}
]
});
3、 使用store提交。
如果使用ajax方式。
:
Specific urls to call on CRUD action methods "create", "read", "update" and "destroy". Defaults to:
api: { create : undefined, read : undefined, update : undefined, destroy : undefined }
The url is built based upon the action being executed [create|read|update|destroy] using the commensurate property, or if undefined default to the configured ..
For example:
api: { create : '/controller/new', read : '/controller/load', update : '/controller/update', destroy : '/controller/destroy_action' }