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在上一节的示例中,也可以在
Store
或
HttpProxy
中定义参数
restful
实现
RESTful
操作,不过在使用
RESTful
操作之前,先要了解清楚你所使用的服务器端语言是否支持路径式参数提交,譬如,以下格式:
以上格式表示提交到
users
操作模块,执行删除操作,记录的
id
是
5
。
这是为什么呢?因为
restful
参数设置为
true
时,它改变了提交参数的方式,其基本方式如下:
someSite.com/controller/action/id
格式中,
controller
就是操作模块,
action
代表执行的是增加、编辑、删除还是加载操作,而
id
就是记录的
id
。
因而,不要错误理解为只有设置
restful
为
true
才能实现
Store
的
CRUD
操作,参数
restful
的作用只是改变参数的提交方式,并没其他特别的地方。
如果想在上一节的示例中使用
DirectStore
,那么必须在
RowEdit
的编辑控件外加一个
Form
。因为
Ext.Direct
对提交参数有严格的要求,但是数据加载、增加、编辑或删除等操作提交的数据都不相同,尤其是增加和编辑,要提交的数据因字段的多少而不同,因而为了简化操作和定义,增加和编辑操作采用的是
Form
形式的提交。因此,
RowEdit
上的输入框必须在一个
Form
内,不然
Ext.Direct
会产生错误。
因此,笔者个人认为,如果全项目使用
Ext.Direct
作为数据的提交方式,不适合采用上一节这样
CRUD
操作,还是使用传统的
Form
编辑方式比较适合。