在ExtJS的4加载和保存嵌套数据 [英] Load and save nested data in ExtJS 4
问题描述
我有两个型号：书作者的belongsTo。我们的调查与图书数据一起发送的道路上从服务器到ExtJS的和后面的作者的数据。服务器发送嵌套的数据如下，以ExtJS的：
I have two models: Book belongsTo Author. Let's survey the author data sent together with book data on its way from server to ExtJs and back. Server sends following nested data to ExtJs:
{
success : true,
data: {
id: '23',
name: 'JavaScript - The definitive guide'
author: { // <<-- nested author data
id: '45',
name: 'David Flanagan',
}
}
}
在ExtJS的一侧的数据由下面的模型进行处理：
On side of ExtJs the data are treated by following model:
Ext.define('My.models.Book', {
extend: 'Ext.data.Model',
idProperty: 'id',
fields: [
'id',,
'name',
{name: 'author_id', mapping: 'Author.id'}, // <<-- flat author data
],
proxy: {
type: 'ajax',
api: {
read: 'My/Books/index',
create: 'My/Books/create',
update: 'My/Books/update',
destroy: 'My/Books/delete'
},
reader: {
type: 'json',
root: 'data',
},
writer: {
type: 'json',
root: 'data',
},
},
associatinons: [{
type: 'belongsTo',
model: 'My.models.Author',
associationKey: 'Author',
}]
});
由于映射 Author.id 在 AUTHOR_ID 图书领域模式（ {名称：'AUTHOR_ID'，映射：Author.id'} ）我能够笔者将数据加载到下面的表单设计编辑的书数据：
Thanks to mapping Author.id on author_id field of Book model ({name: 'author_id', mapping: 'Author.id'}) I am able to load the data of author to following form designed to edit book data:
Ext.define('My.views.books.Form', {
extend: 'Ext.form.Panel',
initComponent: function () {
var me = this;
me.items = [{
xtype: 'container',
layout:'anchor',
defaults:{
anchor: '95%'
},
items:[{
xtype: 'textfield',
fieldLabel: 'Book title',
name: 'name'
},{
xtype: 'combo',
fieldLabel: 'Author',
name: 'author_id', // <<-- flat author data
store: ...
}]
}];
me.buttons = [{
text: 'Save',
scope: me,
handler: me.onSave
}];
me.callParent(arguments);
},
...
});
当然有一个专门致力于创作模式，但是当我需要的书和作者的数据加载到一种形式的一次，我没有看到（暂时），另一种可能性如上所示的（当然我展示它，请，如果有一些更好的解决方案）。
Of course there is a model dedicated exclusively to author but when I need to load book and author data into one form at once, I do not see (for the moment) other possibility as the one shown above (Of course show me it, please, if there is some better solution).
现在的问题来了：我会选择从组合一些其他的作者，我会保存表单。正如书中记录变脏（ AUTHOR_ID 现在显示为一个图书示范田），有将提高到一个请求我的/书籍/更新 URL（这是相当好的，我'编辑书）与下列发送到服务器的数据：
The problem comes now: I will choose some other author from combo and I will save the form. As the book record get dirty (author_id appears now as a Book model field), there will be raised a request to 'My/Books/update' URL (this is quite ok, I'am editing book) with following data sent to server:
{
data: {
id: '23',
name: 'JavaScript - The definitive guide',
author_id: '78' // <<-- flat author data
}
}
数据回来服务器未中相同的结构，因为它们已被送往ExtJs的，且必须做出某种像翻译
Data coming back to server are not the in the same structure as they have been sent to ExtJs and must make some kind of translations like:
$data['Author']['id'] = @$data['author_id'];
unset($data['author_id']);
我问：是否有可能把这样的方式，他们将回到服务器只是在相同的结构，因为他们从服务器附带由ExtJS的表单数据？怎么样？
的这个问题已经讨论过不知何故<一个href=\"http://stackoverflow.com/questions/14634577/save-nested-form-data-back-to-server-in-extjs\">here, 这里和的这里，但既不是这些讨论的肯定回答了。的
This question was already somehow discussed here, here and here, but neither of those discussions answered it definitely.
感谢提前帮助！ ：）
推荐答案
简短的回答：不，还没有。
Short Answer: No, not yet.
更长的答案：你可以创建自己的作家来处理你的数据结构，当你收到它发回服务器以同样的方式。
Longer answer: You could create your own writer to handle your data structure and send it back to the server the same way as you received it.
您既可以通过创建子类自己的作家：的 http://docs.sencha.com/ext-js/4-2/#!/api/Ext.data.writer.Writer 和使用，在你的代理
You could either create your own writer by subclassing: http://docs.sencha.com/ext-js/4-2/#!/api/Ext.data.writer.Writer and use that in your proxy
或
您可以创建，改变它的结构，在模型上的功能。
既然你不使用的商店，你可以创建一个函数saveModel（），您改变模型结构和调用save（）方法。
You could create a function on your model that changes it's structure. Since you are not using stores you could create a function saveModel() where you change the model structure and call the save() method.
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