HYC-1810 - MissingTemplate error for info.json requests (#1048)

* Set formats for error pages

* Add render_json_response method from included class which does not appear to be available

* HYC-1813 - Send UnknownFormat errors to 404 page, and specify html format for most errors

app/controllers/application_controller.rb

@@ -23,27 +23,33 @@ class ApplicationController < ActionController::Base
   rescue_from Hyrax::ObjectNotFoundError, with: :render_404
   rescue_from ActiveFedora::ObjectNotFoundError, with: :render_404
   rescue_from ActionController::InvalidAuthenticityToken, with: :render_401
+  rescue_from ActionController::UnknownFormat, with: :render_404
 
   protected
 
   def render_400
-    render 'errors/not_found', status: 400
+    render 'errors/not_found', status: 400, formats: :html
   end
 
   def render_401
-    render 'errors/not_found', status: 401
+    render 'errors/not_found', status: 401, formats: :html
   end
 
   def render_riiif_404
     render_json_response(response_type: :not_found)
   end
 
+  def render_json_response(response_type: :success, message: nil, options: {})
+    json_body = Hyrax::API.generate_response_body(response_type: response_type, message: message, options: options)
+    render json: json_body, status: response_type
+  end
+
   def render_404
-    render 'errors/not_found', status: 404
+    render 'errors/not_found', status: 404, formats: :html
   end
 
   def render_500
-    render 'errors/internal_server_error', status: 500
+    render 'errors/internal_server_error', status: 500, formats: :html
   end
 
   # Error caught in catalogController

app/controllers/errors_controller.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 class ErrorsController < ApplicationController
   def not_found
-    render nothing: true, status: 404
+    render nothing: true, status: 404, formats: :html
   end
 
   def internal_server_error
-    render nothing: true, status: 500
+    render nothing: true, status: 500, formats: :html
   end
 end