如何使用ember.js做一个类似的过滤器 [英] How to do a like filter with ember.js

问题描述

我有一个简单的ArrayController在ember pre 1.0中，发现如果过滤器找到一个给定属性的完全匹配，我可以将列表关闭，但是我似乎找不到如何做一个like查询使用过滤器。

如果我用户搜索数组，我下面的工作如何...

 {code> filtered = ['id'，'username']。map（function（property）{
 return self.get（'content'）。filterProperty（property，filter）; 
}）; 
  

...和一些用户具有相同的用户名。例如=>如果我通过smith搜索/过滤，它将返回两个记录，因为username属性与smith完全匹配

我如何改变这个地图函数以使用类似的样式查询，所以当我输入单词sm时，它仍然发现这两个记录。

这里是显示过滤器的jsfiddle在上面显示 http://jsfiddle.net/Rf3h8/

提前谢谢

解决方案

您可以使用 RegExp 对象来测试匹配的数据。由于您正在编写自己的过滤器逻辑，因此您必须使用过滤器函数。我更新了你的小提琴来做这个工作： http://jsfiddle.net/Rf3h8/1/

您的小提琴包含大量代码，可能难以让其他人遵守。以下是使用 RegExp 过滤数组的一个非常简单的示例。

  var regex = new RegExp（'ry'）; 
 
 var filtered = names.filter（function（person）{
 return regex.test（person）; 
}）; 
 
已过滤// => ['ryan'] 
  

其实你甚至可以将它重构为

  var filtered = names.filter（regex.test，regex）; 
  

I have a simple ArrayController in ember pre 1.0 and found that I can chop the list down if the filter finds an exact match for a given property, but what I can't seem to find is how do a "like" query with filter.

What I have below works if I search an array with users...

filtered = ['id', 'username'].map(function(property) {
  return self.get('content').filterProperty(property, filter);
});

... and a few of the users have the same username. For example => if I search / filter by "smith" it will return both records as the "username" property has the exact match for "smith"

How can I change this map function to work with the like style query so when I type the word "sm" it still finds both of these records

Here is the jsfiddle showing the filter I show above in action http://jsfiddle.net/Rf3h8/

Thank you in advance

解决方案

You can use a RegExp object to test pieces of data for a match. Since you are writing your own filter logic, you'll have to use the filter function. I've updated your fiddle to make this work: http://jsfiddle.net/Rf3h8/1/

Your fiddle contains a lot of code and may be hard for others to follow. Here is a very simple example of using RegExp to filter an array.

var names = ['ryan', 'toran', 'steve', 'test'];
var regex = new RegExp('ry');

var filtered = names.filter(function(person) {
  return regex.test(person);
});

filtered // => ['ryan']

In fact you could even refactor this to be

var filtered = names.filter(regex.test, regex);

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