Initializing Angular variables

My Angular controller has a variable called $scope.abc.

The backend I'm using is Sails.

The initial value of $scope.abc can be set by the backend when the page is first generated. Once the page is displayed, the user may or may not change this value.

Instead of having the backend generate a complete static page and then querying it for the initial value of $scope.abc, I believe it would be more efficient to have the initial value determined during the page generation process.

So, my question is: How can I initialize $scope.abc when the webpage is being created? Is there a way to pass data to an Angular JS file like we do with res.view("",data) in backend development?

javascriptangularjssails.js

Answer №1

When faced with limited options, one solution is to send an additional ajax request to load data. However, this may not be ideal if the data is already available during the loading of the index page. In such cases, you can inject the data into an additional script tag and access it from there.

<script>
    // Ensure that the data is JSON encoded.
    window.appData = <%= data %>;
</script>
<script src="angular.js"></script>
<script src="app.js"></script>

Next step would involve setting a constant service in the app to store the data:

angular.module('app').constant('appData', {data: window.appData});

This approach allows you to utilize the data in a more Angular-oriented manner at a later stage. For instance:

angular.module('app').controller(function($scope, appData) {
    $scope.info = appData.data.userId;
});

If you are worried about the global variable appData, you can remove it within the app run block once the constant has been set.

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