问题描述
我正在尝试在这里实现一个搜索系统，而且我在store.filter（）中遇到麻烦。
I am trying to implement a search system here and I am having some trouble with store.filter()
首先我找不到任何好的文档在这里的 store.filter（）方法：
First of all I can't find any good documentation on the store.filter() method aside from here: http://emberjs.com/guides/models/frequently-asked-questions/
所以我正在使用提供的示例该页面作为指导。
So I am using the example provided on that page as a guideline.
这是我在代码中所拥有的
This is what I have in my code
App.ApplicationController = Ember.ObjectController.extend({
isDropdown: false,
actions: {
handle_search: function() {
var search_text = this.get('search_text');
if (search_text) {
this.set('isDropdown', true);
return this.store.filter('procedure', {proc_name: search_text}, function(procedure) {
console.log(procedure);
});
}
}
}
});
但是当我记录返回的内容时，它基本上都是返回单个模型。而不是没有结果或有限的结果。
but when I log what is being returned, it's returning basically every single model. Instead of no results or a limited amount of results.
除了程序之外，它自己不是模型的对象，这是其他一些事情。
On top of that procedure it self is not the model's object, it's some other thing.
所以我的问题是如何获得实际的模型与领域，如何确保商店实际上过滤结果？
So my question is how do I get the actual model with the fields and how can I ensure that the store is actually filtering the results?
推荐答案
你只需要传递一个函数返回true / false来包含记录
You just need to pass in a function that returns true/false for including the record
App.IndexRoute = Ember.Route.extend({
model: function() {
return this.store.filter('color', function(item){
return item.get('color')=='red';
});
}
});
如果你想打电话给服务器在同一时间（通过查询查找），您可以包含可选的查询参数，下面的示例将调用 / colors？color = green
If you want to make a call back to the server at the same time (find by query) you include the optional query param, the below example will call /colors?color=green
App.IndexRoute = Ember.Route.extend({
model: function() {
return this.store.filter('color', {color:'green'}, function(item){
return item.get('color')=='red';
});
}
});
/**
Takes a type and filter function, and returns a live RecordArray that
remains up to date as new records are loaded into the store or created
locally.
The callback function takes a materialized record, and returns true
if the record should be included in the filter and false if it should
not.
The filter function is called once on all records for the type when
it is created, and then once on each newly loaded or created record.
If any of a record's properties change, or if it changes state, the
filter function will be invoked again to determine whether it should
still be in the array.
Optionally you can pass a query which will be triggered at first. The
results returned by the server could then appear in the filter if they
match the filter function.
Example
```javascript
store.filter('post', {unread: true}, function(post) {
return post.get('unread');
}).then(function(unreadPosts) {
unreadPosts.get('length'); // 5
var unreadPost = unreadPosts.objectAt(0);
unreadPost.set('unread', false);
unreadPosts.get('length'); // 4
});
```
@method filter
@param {String or subclass of DS.Model} type
@param {Object} query optional query
@param {Function} filter
@return {DS.PromiseArray}
*/
这篇关于store.filter（）不按预期工作ember.js（尝试搜索模型）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！