How to keep globally current user until logout with angular_devise?

Question

How to create own service accessible globally that will call server by currentUser() only once on page load, if User is logged in then keep it and provide data to c

Answer 1

I solved the issue of current_user information with angular by adding the following JavaScript (jQuery) code to the bottom of my main HTML page:

$("meta[name=current_user]").data('current_user', {
    id: <%=j current_user.id.to_s %>, 
    username: "<%=j current_user.full_name.to_s %>"
});

You can parse in whatever information you need, this happens to be a Rails Project and all I needed was the ID and NAME (with the ID I could query the User factory object and receive a JSON with full information if I needed).

Then in your AngularJS Controller you can add (mine is coffeescript):

# Grab User Info
current_user = angular.element("meta[name=current_user]").data 'current_user'

# Stop Here if you Have the Info you Need
$scope.user = current_user

# **** OR Get More Info if User is Logged In 
if current_user.id is not undefined
   $scope.user = User.get {id: current_user.id}

Here is my Factory Code for the User (coffeescript again):

# In order to prevent minification from effecting the code
# must wrap functions as arrays and pass in the variables as 
# strings before the function call
app.factory "User", ["$resource", ($resource) ->
    $resource("/api/angular/users/:id", 
    { id: "@id" }, 
    {
        update: { method: "PUT" }
    })
]

Let me know if you have any questions.