AngularJS filter only on certain objects

问题

I have the user object defined as below.

$scope.user = [{id: 1, friends:
    [
        {name: 'John', age: 21, sex: 'M'},
        {name: 'Brad', age: 32, sex: 'M'}
    ]
}]

I have the following code:

<input type="text" ng-model="searchText">
<div ng-repeat="friend in user.friends | filter:searchText">
  {{friend.name}} {{friend.age}}
</div>

Here whenever I search, I get results for name, age as well as sex. But I want to search only for name and age and I don't want sex to be searchable. Can anyone help me with how I can achieve this?

回答1:

I'm not sure if this is what you are after. If you want to have one input field to matched multiple properties you need a filter function to be passed to filter.

$scope.user = {id: 1, friends: [{name: 'John', age: 21, sex: 'M'}, {name: 'Brad', age: 32, sex: 'M'}, {name: 'May', age: 64, sex: 'F'}]};

$scope.searchFilter = function (obj) {
    var re = new RegExp($scope.searchText, 'i');
    return !$scope.searchText || re.test(obj.name) || re.test(obj.age.toString());
};

Here's a fiddle example http://jsfiddle.net/fredrik/26fZb/1/

回答2:

You can pass an object as the second parameter to achieve this if you can have two search fields

<div ng-repeat="friend in user.friends | filter:{name:searchNameText, age:searchAgeText}">

Otherwise you'll need to write a custom filter to use the same field for both, or pass a custom filter function as the third parameter which is described in the docs.

http://docs.angularjs.org/api/ng.filter:filter

回答3:

This is not the cleanest way to accomplish what you want, but it is the simplest way to accomplish an OR filter using the standard ng-repeat filter.

Controller:

$scope.user = [{id: 1, friends:
    [
        {name: 'John', age: 21, sex: 'M'},
        {name: 'Brad', age: 32, sex: 'M'}
    ]
}]

$scope.buildSearchData = buildSearchData;

function buildSearchData(friend){
    return friend.name + ' ' + friend.age;
}

HTML

<input type="text" ng-model="searchText">
<div ng-repeat="friend in user.friends | filter:{searchData:searchText}"
     ng-init="friend.searchData = buildSearchData(friend)">
  {{friend.name}} {{friend.age}}
</div>

回答4:

"friend in user.friends | json | filter:{something:somethingtext}"

http://docs-angularjs-org-dev.appspot.com/api/ng.filter:json

回答5:

Another possible approach is to create an aggregate field that contains the values of all of the fields you want to filter on concatenated and only filter on that.

来源：https://stackoverflow.com/questions/13814283/angularjs-filter-only-on-certain-objects

标签

angularjs

javascript-framework