media endpoint

app/controllers/media_controller.rb

@@ -6,6 +6,6 @@ class MediaController < ApplicationController
     blob_or_variant_url = transformations.empty?  ? url_for(@blob)
                                                   : url_for(@blob.variant(transformations))
 
-    render json: { transformations: transformations, url: blob_or_variant_url }
+    redirect_to blob_or_variant_url
   end
 end

app/views/active_storage/blobs/jekyll.html.erb

 <%
 width, height = @blob.metadata.values_at('width', 'height')
 ratio = width.present? && height.present? ? (width.to_f / height.to_f) : nil
+university = University.find_by(id: @blob.university_id)
+base_url = university&.url || ""
+media_endpoint_path = medium_path(signed_id: @blob.signed_id, filename_with_transformations: @blob.filename)
 %>
 <%# TODO: Replace @blob.url with the media endpoint when it's ready %>
 <%= raw({
@@ -9,5 +12,5 @@ ratio = width.present? && height.present? ? (width.to_f / height.to_f) : nil
   "width" => width,
   "height" => height,
   "ratio" => ratio,
-  "url" => @blob.url
+  "url" => "#{base_url}#{media_endpoint_path}"
 }.compact.to_yaml) %>

test/models/variant_service_test.rb

@@ -6,12 +6,10 @@ class VariantServiceTest < ActiveSupport::TestCase
   include ActiveRecord::TestFixtures
 
   setup do
-    ActiveStorage::Current.host = "https://example.com"
     @was_tracking, ActiveStorage.track_variants = ActiveStorage.track_variants, false
   end
 
   teardown do
-    ActiveStorage::Current.reset
     ActiveStorage.track_variants = @was_tracking
   end