Role and permission based authentication on routes as simple as it can get.
- Requires you to use ui-router as your router module.
Permission helps you gain control of your routes, by using simple concepts for you to decide who can access them. I've seen plenty of big fat tutorials on access control implementations, and they can be quite overwhelming. So I bring you a simple, powerful, straightforward solution.
Please remember this project is very new, I wouldn't recommend yet using this in a big project just yet as, like any new project, might drastically change over time.
bower install angular-permission --save
angular.module('yourModule', [..., 'permission']);This is how simple Permission makes it for you to define a route which requires authorization.
// We define a route via ui-router's $stateProvider
$stateProvider
.state('staffpanel', {
url: '...',
data: {
permissions: {
only: ['admin', 'moderator']
}
}
});You can either set an only or an except array.
// Let's prevent anonymous users from looking at a dashboard
$stateProvider
.state('dashboard', {
url: '...',
data: {
permissions: {
except: ['anonymous']
}
}
});Another thing you can do is set a redirect url to which unauthorized sessions will go to.
$stateProvider
.state('dashboard', {
url: '...',
data: {
permissions: {
except: ['anonymous'],
redirectTo: 'login'
}
}
});So, how do yo tell Permission what does 'anonymous', 'admin' or 'foo' mean and how to know if the current user belongs to those definitions?
Well, Permission allows you to define different 'roles' along with the logic that determines if the current session belongs to them.
// Let's imagine we have a User service which has information about the current user in the session
// and is undefined if no session is active
//
// We will define the following roles:
// anonymous: When there is not user currenly logged in
// normal: A user with isAdmin = false
// admin: A user with isAdmin = true
angular.module('fooModule', ['permission', 'user'])
.run(function (Permission, User) {
// Define anonymous role
Permission.defineRole('anonymous', function (stateParams) {
// If the returned value is *truthy* then the user has the role, otherwise they don't
if (!User) {
return true; // Is anonymous
}
return false;
});
});Sometimes you will need to call some a back-end api or some other asyncronous task to define the role For that you can use promises
angular.module('barModule', ['permission', 'user'])
.run(function (Permission, User, $q) {
Permission
// Define user role calling back-end
.defineRole('user', function (stateParams) {
// This time we will return a promise
// If the promise *resolves* then the user has the role, if it *rejects* (you guessed it)
// Let's assume this returns a promise that resolves or rejects if session is active
return User.checkSession();
})
// A different example for admin
.defineRole('admin', function (stateParams) {
var deferred = $q.defer();
User.getAccessLevel().then(function (data) {
if (data.accessLevel === 'admin') {
deferred.resolve();
} else {
deferred.reject();
}
}, function () {
// Error with request
deferred.reject();
});
return deferred.promise;
});
});As you can see, Permission is useful wether you want a role-based access control or a permission-based one, as it allows you to define this behaviour however you want to.
-
$stateChangePermissionAccepted: This event is broadcasted when one of the permissions has been accepted and the state changes successfully.
-
$stateChangePermissionDenied: This event is broadcasted when the access to the target state is not granted (no permissions found on the
onlyarray or at least one permission found on theexceptarray). This is when the state stays the same or is changed based on theredirectTooption.
Help fill this list with your feature requests
- More powerful redirection to allow passing state parameters and other useful stuff ui-router provides. Ideas anyone?
- Inheritance (example: 'admin' inherits from 'user')
- Role validation caching?
This project is still in diapers and I would love your feedback / help in making this a great module for angular developers to use.
The correct way to contribute is:
- Create a branch from the
developmentbranch - Implement your new feature
- Submit a pull request to be merged in the
developmentbranch - Remember to run
grunt buildbefore your last commit
- Rafael Vidaurre
- @narzerus
- I'm a full-stack developer currenly working as CTO and Co-Founder at Finciero