Passing arguments to angularjs filters
JavascriptAngularjsAngular FiltersJavascript Problem Overview
Is it possible to pass an argument to the filter function so you can filter by any name?
Something like
$scope.weDontLike = function(item, name) {
console.log(arguments);
return item.name != name;
};
Javascript Solutions
Solution 1 - Javascript
Actually there is another (maybe better solution) where you can use the angular's native 'filter' filter and still pass arguments to your custom filter.
Consider the following code:
<div ng-repeat="group in groups">
<li ng-repeat="friend in friends | filter:weDontLike(group.enemy.name)">
<span>{{friend.name}}</span>
<li>
</div>
To make this work you just define your filter as the following:
$scope.weDontLike = function(name) {
return function(friend) {
return friend.name != name;
}
}
As you can see here, weDontLike actually returns another function which has your parameter in its scope as well as the original item coming from the filter.
It took me 2 days to realise you can do this, haven't seen this solution anywhere yet.
Checkout https://stackoverflow.com/questions/13464809/reverse-polarity-of-an-angular-js-filter/17811582#17811582 to see how you can use this for other useful operations with filter.
Solution 2 - Javascript
From what I understand you can't pass an arguments to a filter function (when using the 'filter' filter). What you would have to do is to write a custom filter, sth like this:
.filter('weDontLike', function(){
return function(items, name){
var arrayToReturn = [];
for (var i=0; i<items.length; i++){
if (items[i].name != name) {
arrayToReturn.push(items[i]);
}
}
return arrayToReturn;
};
Here is the working jsFiddle: <http://jsfiddle.net/pkozlowski_opensource/myr4a/1/>
The other simple alternative, without writing custom filters is to store a name to filter out in a scope and then write:
$scope.weDontLike = function(item) {
return item.name != $scope.name;
};
Solution 3 - Javascript
Actually you can pass a parameter ( http://docs.angularjs.org/api/ng.filter:filter ) and don't need a custom function just for this. If you rewrite your HTML as below it'll work:
<div ng:app>
<div ng-controller="HelloCntl">
<ul>
<li ng-repeat="friend in friends | filter:{name:'!Adam'}">
<span>{{friend.name}}</span>
<span>{{friend.phone}}</span>
</li>
</ul>
</div>
</div>
Solution 4 - Javascript
You can simply do like this In Template
<span ng-cloak>{{amount |firstFiler:'firstArgument':'secondArgument' }}</span>
In filter
angular.module("app")
.filter("firstFiler",function(){
console.log("filter loads");
return function(items, firstArgument,secondArgument){
console.log("item is ",items); // it is value upon which you have to filter
console.log("firstArgument is ",firstArgument);
console.log("secondArgument ",secondArgument);
return "hello";
}
});
Solution 5 - Javascript
Extending on pkozlowski.opensource's answer and using javascript array's
builtin filter method a prettified solution could be this:
.filter('weDontLike', function(){
return function(items, name){
return items.filter(function(item) {
return item.name != name;
});
};
});
Here's the jsfiddle link.
More on Array filter here.
Solution 6 - Javascript
You can pass multiple arguments to angular filter !
Defining my angular app and and an app level variable -
var app = angular.module('filterApp',[]);
app.value('test_obj', {'TEST' : 'test be check se'});
Your Filter will be like :-
app.filter('testFilter', [ 'test_obj', function(test_obj) {
function test_filter_function(key, dynamic_data) {
if(dynamic_data){
var temp = test_obj[key];
for(var property in dynamic_data){
temp = temp.replace(property, dynamic_data[property]);
}
return temp;
}
else{
return test_obj[key] || key;
}
}
test_filter_function.$stateful = true;
return test_filter_function;
}]);
And from HTML you will send data like :-
<span ng-bind="'TEST' | testFilter: { 'be': val, 'se': value2 }"></span>
Here I am sending a JSON object to the filter. You can also send any kind of data like string or number.
also you can pass dynamic number of arguments to filter , in that case you have to use arguments to get those arguments.
For a working demo go here - passing multiple arguments to angular filter
Solution 7 - Javascript
You can simply use | filter:yourFunction:arg
<div ng-repeat="group in groups | filter:weDontLike:group">...</div>
And in js
$scope.weDontLike = function(group) {
//here your condition/criteria
return !!group
}