javascript 在 ExtJS 中加载 hasMany 数据
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Loading hasMany data in ExtJS
提问by Bart Vangeneugden
I'm trying to load 'nested' data in a hasManyrelation in ExtJS4.
My model looks like this:
我正在尝试hasMany在 ExtJS4中的关系中加载“嵌套”数据。我的模型看起来像这样：
Ext.define("Entrypage.model.Entrypage",{
extend: "Ext.data.Model",
fields: ['id','title','urlkey','text','picture','keywords', 'searchterms','description','critriamodus'],
hasMany: {model: 'EntrypageCriterium',name:'brands'},
proxy: {
type: 'ajax',
url: '/Admin/extjson/entrypages',
reader: {type:'json', root:'entrypages'}
}
});
And EntrypageCriterium:
并且EntrypageCriterium：
Ext.define("Entrypage.model.EntrypageCriterium",{
extend: "Ext.data.Model",
fields: ['id','type','title']
});
I load my data like so:
我像这样加载我的数据：
Entrypage.load("nikon-coolpix",{success:function(record,options,success){
console.log(record);
}});
It loads fine. Json returns this:
它加载良好。Json 返回这个：
{
"success": true,
"entrypages":[{
"id":"1",
"urlkey":"nikon-coolpix",
"title":"Nikon Coolpix",
"text":"Some blahblah about Nikon",
"keywords":"nikon,coolpix,digitale,camera",
"description":"Nikon Coolpix camera's",
"picture":"Nikon Coolpix camera's",
"searchterms":"nikon coolpix",
"language":"nl",
"brands":[
{"id":27038,"title":"Nikon","type":"brand"}
]
}]
}
But when I try record.brands()or anything like that. It says no such method exists.
I think something is going wrong in mapping the data in the model.
但是当我尝试record.brands()或类似的事情时。它说不存在这样的方法。我认为在映射模型中的数据时出了点问题。
Any helpy would be very much appreciated!
任何帮助将不胜感激！
回答by Bart Vangeneugden
Finally found the problem. For any future reference:
终于找到问题了。供以后参考：
If you're using packages in the new MVC structure of ExtJS, define the full path to the linked class in your association like so:
如果您在 ExtJS 的新 MVC 结构中使用包，请在关联中定义链接类的完整路径，如下所示：
hasMany: {model: 'Entrypage.model.EntrypageCriterium', name: 'brands', associationKey:'brands'}
回答by Neil McGuigan
You need to set the associationKey property in the hasMany association, so it knows which json property to use.
你需要在hasMany关联中设置associationKey属性，这样它就知道使用哪个json属性了。
hasMany: {model: 'EntrypageCriterium',name:'brands', associationKey:'brands'}
see the Loading Nested Data section here:
请参阅此处的加载嵌套数据部分：
http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.reader.Reader
http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.reader.Reader
