Retrieve a Play Scala variable in the $scope of an AngularJS application

After trying various methods recommended on StackOverflow, I am still struggling to retrieve a Play Scala variable within my Javascript $scope. The line of initialization in an HTML file is as follows:

@(playVariable: String)(implicit request: play.api.mvc.Request[Any])

I am able to display this value between HTML tags as text on the screen by using something like:

<h2>Play value: @playVariable</h2>

However, I am unsure how to assign this variable to a $scope value... Additionally, I don't believe that the Play @ character is valid within HTML tags, which leads to event.currentTarget.scalaVal being undefined in $scope.angularFunction:

<button type="button" ng-click="angularFunction(parameter);" scalaVal=@playVariable>Click!</button>

I need to access @playVariable within $scope.angularFunction to pass it into a backend HTTP call... How can I achieve this?

Answer №1

Our approach involves setting global variables on the window object while generating HTML in Play, and then accessing these variables from our Angular code. Though using globals is generally considered a bad practice, sometimes it proves to be more convenient. Since our Angular code operates as a Single Page App, we prefer not to make modifications to the templates on the Play side, which seems to be the direction you are heading in.

If you'd rather avoid this method and intend to adjust your Angular template on the Play side before serving it, you might consider passing your Play variable within the function call, as shown below:

ng-click=angularFunction(parameter, @playVariable)"

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