angularjs - Using [] square brackets as part of a parameter in $resource GET call to API in Angular is not working -

i trying trying user data ajax-localized rest api wants parameters so:

/api/activity?filter[user_id]=1 

i have factory set query parameters so:

angular.module('app')     .factory('activity',function($resource){         return $resource(ajaxinfo.api_url+'activity',         { // query parameters             filter: {                 '[user_id]': '@userid'             },          },          {             'query':{                 method:'get',                 headers: {                     'x-wp-nonce': ajaxinfo.nonce                 },                 isarray: false             }         });     }) 

i'm console.logging in template so:

$scope.userone = activity.query({userid:1}); console.log($scope.userone) 

it's returning

http:site.dev/api/activity?filter=%7b%22%5buser_id%5d%22:%22@userid%22%7d&userid=1". 

any idea i'm doing wrong?

here's did fix this:

i created factory called "currentuser" factory returns current user's object api.

then created controller passed parameters activity factory when wanted filter activity user id.

$scope.userinfo = function(){     //call currentuser , see if it's available , return u     currentuser.instance().then(function(u) {         //now query activity factory , pass filter string along user id u.id         activity.query({'filter[user_id]':u.id}, function(res){             $scope.userone = res ;             console.log($scope.userone);         });     })  }; $scope.userinfo();