angularjs - Can't seem to be able to pass data from one controller to another -

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the issue can't seem send information controller 1 controller 2... have service sets/gets data isn't working. actual error i'm getting controller 1's dataservice.getdata not function... when works elsewhere.

service 1 (in own file)

app.service('dataservice', function() {     var data, queried;     return {         setdata: function(querydata) {             this.data = querydata;             this.queried = false;         },         getdata: function() {             this.queried = true;             return this.data;         }     };  });

controller 1 (sending information)

app.controller('myctrl', ['$scope', '$location', '$state', function($scope, $location, $state, dataservice) {     anotherservice.functionname(function(err, data) {         // things here         actualservice.doesntwork(function(err, data) {             if (!err) {                 var query = {};                 query.somefield = data.somefield;                 dataservice.setdata(query);                 $state.go("go.somewhere.else");             }         });     }); }]);

controller 2 (getting information) 

app.controller('myctrl2', ['$scope', '$location', '$state', function($scope, $location, $state, dataservice) {     $scope.buttonpressed = function() {         console.log(dataservice.getdata());     } }]);

you didn't injected service dataservice inside myctrl & myctrl2, ensure dependency should injected before using it.

controller

app.controller('myctrl', ['$scope', '$location', '$state','dataservice', //<-added dependency here    function($scope, $location, $state, dataservice) {     anotherservice.functionname(function(err, data) {         // things here         actualservice.doesntwork(function(err, data) {             if (!err) {                 var query = {};                 query.somefield = data.somefield;                 dataservice.setdata(query);                 $state.go("go.somewhere.else");             }         });     }); }]);

controller2

app.controller('myctrl2', ['$scope', '$location', '$state','dataservice',//<-added dependency here    function($scope, $location, $state, dataservice) {     $scope.buttonpressed = function() {         console.log(dataservice.getdata());     } }]);

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