chore: Add UNPROCESSABLE_STATUS constant

Replace inline unprocessable method with UNPROCESSABLE_STATUS constant.

Author: blocknotes

app/controllers/active_storage_db/files_controller.rb

@@ -17,12 +17,12 @@ def show
     def update
       if (token = decode_verified_token)
         file_uploaded = upload_file(token)
-        head(file_uploaded ? :no_content : unprocessable)
+        head(file_uploaded ? :no_content : ActiveStorageDB::UNPROCESSABLE_STATUS)
       else
         head(:not_found)
       end
     rescue ActiveStorage::IntegrityError
-      head(unprocessable)
+      head(ActiveStorageDB::UNPROCESSABLE_STATUS)
     end
 
     private
@@ -60,13 +60,5 @@ def upload_file(token) # rubocop:disable Naming/PredicateMethod
       db_service.upload(token[:key], request.body, checksum: token[:checksum])
       true
     end
-
-    def unprocessable
-      if Rails::VERSION::MAJOR > 7 || (Rails::VERSION::MAJOR == 7 && Rails::VERSION::MINOR >= 1)
-        :unprocessable_content
-      else
-        :unprocessable_entity
-      end
-    end
   end
 end

lib/active_storage_db/engine.rb

@@ -1,6 +1,14 @@
 # frozen_string_literal: true
 
 module ActiveStorageDB
+  # :nocov:
+  UNPROCESSABLE_STATUS = if Rails::VERSION::MAJOR > 7 || (Rails::VERSION::MAJOR == 7 && Rails::VERSION::MINOR >= 1)
+                           :unprocessable_content
+                         else
+                           :unprocessable_entity
+                         end
+  # :nocov:
+
   class Engine < ::Rails::Engine
     isolate_namespace ActiveStorageDB
   end

spec/dummy/app/controllers/posts_controller.rb

@@ -32,7 +32,7 @@ def create
         format.json { render :show, status: :created, location: @post }
       else
         format.html { render :new }
-        format.json { render json: { errors: @post.errors }, status: unprocessable }
+        format.json { render json: { errors: @post.errors }, status: ActiveStorageDB::UNPROCESSABLE_STATUS }
       end
     end
   end
@@ -46,7 +46,7 @@ def update
         format.json { render :show, status: :ok, location: @post }
       else
         format.html { render :edit }
-        format.json { render json: { errors: @post.errors }, status: unprocessable }
+        format.json { render json: { errors: @post.errors }, status: ActiveStorageDB::UNPROCESSABLE_STATUS }
       end
     end
   end
@@ -70,8 +70,4 @@ def load_post
   def post_params
     params.fetch(:post) { {} }.permit!
   end
-
-  def unprocessable
-    Rails::VERSION::MAJOR > 7 || (Rails::VERSION::MAJOR == 7 && Rails::VERSION::MINOR >= 1) ? :unprocessable_content : :unprocessable_entity
-  end
 end