Retrieve all scope variables included in the query parameters

Question

Retrieve all scope variables included in the query parameters

Looking to extract variables from the URL and assign them to scope variables. The URL format might be altered, but for example:

http://example.com?opt.val=true&eg=foobar

The controller code in consideration is as follows:

m.controller('maps', function ($scope) {
    $scope.opts = {
        val: false,
        lav: false
    };
    $scope.eg = "Hello, World!";
});

The goal is to extract opt.val=true&eg=foobar from the URL and set the respective controller variables accordingly:

$scope.opt.val = true;
$scope.eg      = "foobar";
$scope.lav     = false;

Seeking an efficient method using Angular or any better alternative instead of resorting to parsing and manually assigning each variable in the scope. Any suggestions?

If further clarification is needed, feel free to request more information.

javascript angularjs url angularjs-scope

Answer 1

Answer №1

To start off, you can easily retrieve the values using the $location service

var search = $location.search();
// should be similar to
// {
//     "opt.val": "true",
//     "eg": "foobar"
// }

Then, utilize the $parse service to set the values to your $scope

angular.forEach(search, function(val, key) {
    $parse(key).assign($scope, val);
});

Remember that all values in $location.search() are strings, including "true" and "false", so you might need additional logic to handle these if you require Boolean values. Consider something like this

angular.forEach(search, function(val, key) {
    var evaluated = $scope.$eval(val);
    if (evaluated !== undefined) {
        val = evaluated;
    }
    $parse(key).assign($scope, val);
});

Check out a Plunker demo here: http://plnkr.co/edit/xOnDdWUW8PgsMFgmXr0r?p=preview

Answer 2

To start off, you can easily retrieve the values using the $location service

var search = $location.search();
// should be similar to
// {
//     "opt.val": "true",
//     "eg": "foobar"
// }

Then, utilize the $parse service to set the values to your $scope

angular.forEach(search, function(val, key) {
    $parse(key).assign($scope, val);
});

Remember that all values in $location.search() are strings, including "true" and "false", so you might need additional logic to handle these if you require Boolean values. Consider something like this

angular.forEach(search, function(val, key) {
    var evaluated = $scope.$eval(val);
    if (evaluated !== undefined) {
        val = evaluated;
    }
    $parse(key).assign($scope, val);
});

Check out a Plunker demo here: http://plnkr.co/edit/xOnDdWUW8PgsMFgmXr0r?p=preview

Answer 3

Answer №2

Here are a few ways you can achieve that:

#1 Utilizing $StateParams

If you are working with angular's URL Routing, you have the option to utilize $stateParams which provides the desired output. Simply define your parameters within your Router. For instance:

$stateProvider
.state('contacts.detail', {
    url: "/contacts?myParam&myParam2",
    templateUrl: 'contacts.detail.html',
    controller: function ($stateParams) {
        // When navigating from /contacts/42
        expect($stateParams).toBe({contactId: "42"});
    }
})

This sets up your route contacts to receive myParam and myParam2. Subsequently, you can easily parse these parameters in your controller using $stateParamsService:

controller: function($stateParams){
  $stateParams.myParam //*** Accessible! ***//
 }

#2 Leveraging $location

If you're not utilizing routes and prefer a more low-level approach, you can inject $location into your controller and service to extract the queries, like so:

var paramValue = $location.search().myParam;

Do note that enabling html5mode is essential for it to work:

$locationProvider.html5Mode(true);

Trust this information proves beneficial.

Answer 4

Here are a few ways you can achieve that:

#1 Utilizing $StateParams

If you are working with angular's URL Routing, you have the option to utilize $stateParams which provides the desired output. Simply define your parameters within your Router. For instance:

$stateProvider
.state('contacts.detail', {
    url: "/contacts?myParam&myParam2",
    templateUrl: 'contacts.detail.html',
    controller: function ($stateParams) {
        // When navigating from /contacts/42
        expect($stateParams).toBe({contactId: "42"});
    }
})

This sets up your route contacts to receive myParam and myParam2. Subsequently, you can easily parse these parameters in your controller using $stateParamsService:

controller: function($stateParams){
  $stateParams.myParam //*** Accessible! ***//
 }

#2 Leveraging $location

If you're not utilizing routes and prefer a more low-level approach, you can inject $location into your controller and service to extract the queries, like so:

var paramValue = $location.search().myParam;

Do note that enabling html5mode is essential for it to work:

$locationProvider.html5Mode(true);

Trust this information proves beneficial.

Answer 5

Answer №3

To implement the Angular way, simply inject $routeParams into your controller.

Take a look at the example below

// Example:
// URL: http://server.com/index.html#/Chapter/1/Section/2?search=moby
// Route: /Chapter/:chapterId/Section/:sectionId
//
// Result:
$routeParams ==> {chapterId:'1', sectionId:'2', search:'moby'}

For further information, check out $routeParams documentation

Answer 6

To implement the Angular way, simply inject $routeParams into your controller.

Take a look at the example below

// Example:
// URL: http://server.com/index.html#/Chapter/1/Section/2?search=moby
// Route: /Chapter/:chapterId/Section/:sectionId
//
// Result:
$routeParams ==> {chapterId:'1', sectionId:'2', search:'moby'}

For further information, check out $routeParams documentation

Answer 7

Answer №4

If you're looking for a handy tool, consider checking out url.js. Here's a useful example:

url.parse("http://example.com?opt.val=true&eg=foobar").get.eg === "foobar"

Answer 8

If you're looking for a handy tool, consider checking out url.js. Here's a useful example:

url.parse("http://example.com?opt.val=true&eg=foobar").get.eg === "foobar"

Retrieve all scope variables included in the query parameters

Answer №1

Answer №2

#1 Utilizing $StateParams

#2 Leveraging $location

Answer №3

Answer №4

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Retrieve all scope variables included in the query parameters

Answer №1

Answer №2

#1 Utilizing $StateParams

#2 Leveraging $location

Answer №3

Answer №4

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