6 files changed, 16 insertions, 11 deletions
diff --git a/app/models/active_storage/blob.rb b/app/models/active_storage/blob.rb
index fdf9a2c37d..3340c88d12 100644
--- a/app/models/active_storage/blob.rb
+++ b/app/models/active_storage/blob.rb
@@ -57,7 +57,7 @@ class ActiveStorage::Blob < ActiveRecord::Base
 
 
   def url(expires_in: 5.minutes, disposition: :inline)
-    service.url key, expires_in: expires_in, disposition: disposition, filename: filename
+    service.url key, expires_in: expires_in, disposition: disposition, filename: filename, content_type: content_type
   end
 
   def url_for_direct_upload(expires_in: 5.minutes)
diff --git a/app/models/active_storage/service.rb b/app/models/active_storage/service.rb
index 745b1a615f..9d370d0a2b 100644
--- a/app/models/active_storage/service.rb
+++ b/app/models/active_storage/service.rb
@@ -74,7 +74,7 @@ class ActiveStorage::Service
     raise NotImplementedError
   end
 
-  def url(key, expires_in:, disposition:, filename:)
+  def url(key, expires_in:, disposition:, filename:, content_type:)
     raise NotImplementedError
   end
 
diff --git a/app/models/active_storage/service/disk_service.rb b/app/models/active_storage/service/disk_service.rb
index 59b180d0e8..3cde203a31 100644
--- a/app/models/active_storage/service/disk_service.rb
+++ b/app/models/active_storage/service/disk_service.rb
@@ -51,15 +51,17 @@ class ActiveStorage::Service::DiskService < ActiveStorage::Service
     end
   end
 
-  def url(key, expires_in:, disposition:, filename:)
+  def url(key, expires_in:, disposition:, filename:, content_type:)
     instrument :url, key do |payload|
       verified_key_with_expiration = ActiveStorage.verifier.generate(key, expires_in: expires_in, purpose: :blob_key)
 
       generated_url =
         if defined?(Rails) && defined?(Rails.application)
-          Rails.application.routes.url_helpers.rails_disk_blob_path(verified_key_with_expiration, disposition: disposition, filename: filename)
+          Rails.application.routes.url_helpers.rails_disk_blob_path \
+            verified_key_with_expiration,
+            disposition: disposition, filename: filename, content_type: content_type
         else
-          "/rails/active_storage/disk/#{verified_key_with_expiration}/#{filename}?disposition=#{disposition}"
+          "/rails/active_storage/disk/#{verified_key_with_expiration}/#{filename}?disposition=#{disposition}&content_type=#{content_type}"
         end
 
       payload[:url] = generated_url
diff --git a/app/models/active_storage/service/gcs_service.rb b/app/models/active_storage/service/gcs_service.rb
index 7053a130c0..4530de22f6 100644
--- a/app/models/active_storage/service/gcs_service.rb
+++ b/app/models/active_storage/service/gcs_service.rb
@@ -42,10 +42,12 @@ class ActiveStorage::Service::GCSService < ActiveStorage::Service
     end
   end
 
-  def url(key, expires_in:, disposition:, filename:)
+  def url(key, expires_in:, disposition:, filename:, content_type:)
     instrument :url, key do |payload|
-      query = { "response-content-disposition" => "#{disposition}; filename=\"#{filename}\"" }
-      generated_url = file_for(key).signed_url(expires: expires_in, query: query)
+      generated_url = file_for(key).signed_url expires: expires_in, query: { 
+        "response-content-disposition" => "#{disposition}; filename=\"#{filename}\"",
+        "response-content-type" => content_type
+      }
 
       payload[:url] = generated_url
 
diff --git a/app/models/active_storage/service/s3_service.rb b/app/models/active_storage/service/s3_service.rb
index efffdec157..4c17f9902f 100644
--- a/app/models/active_storage/service/s3_service.rb
+++ b/app/models/active_storage/service/s3_service.rb
@@ -47,10 +47,11 @@ class ActiveStorage::Service::S3Service < ActiveStorage::Service
     end
   end
 
-  def url(key, expires_in:, disposition:, filename:)
+  def url(key, expires_in:, disposition:, filename:, content_type:)
     instrument :url, key do |payload|
       generated_url = object_for(key).presigned_url :get, expires_in: expires_in,
-        response_content_disposition: "#{disposition}; filename=\"#{filename}\""
+        response_content_disposition: "#{disposition}; filename=\"#{filename}\"",
+        response_content_type: content_type
 
       payload[:url] = generated_url
 
diff --git a/app/models/active_storage/variant.rb b/app/models/active_storage/variant.rb
index 8785625cc8..d0fee3c62c 100644
--- a/app/models/active_storage/variant.rb
+++ b/app/models/active_storage/variant.rb
@@ -19,7 +19,7 @@ class ActiveStorage::Variant
   end
 
   def url(expires_in: 5.minutes, disposition: :inline)
-    service.url key, expires_in: expires_in, disposition: disposition, filename: blob.filename
+    service.url key, expires_in: expires_in, disposition: disposition, filename: blob.filename, content_type: blob.content_type
   end