Add GET /api/v1/push/subscription REST API (#7471)

* Add Api::V1::Push::SubscriptionsController#show

* Add to routes

app/controllers/api/v1/push/subscriptions_controller.rb

@@ -20,6 +20,10 @@ class Api::V1::Push::SubscriptionsController < Api::BaseController
     render json: @web_subscription, serializer: REST::WebPushSubscriptionSerializer
   end
 
+  def show
+    render json: @web_subscription, serializer: REST::WebPushSubscriptionSerializer
+  end
+
   def update
     raise ActiveRecord::RecordNotFound if @web_subscription.nil?
 

config/routes.rb

@@ -308,7 +308,7 @@ Rails.application.routes.draw do
       end
 
       namespace :push do
-        resource :subscription, only: [:create, :update, :destroy]
+        resource :subscription, only: [:create, :show, :update, :destroy]
       end
     end