feat: Improve File validations

Author: blocknotes

app/models/active_storage_db/file.rb

@@ -4,7 +4,7 @@ module ActiveStorageDB
   class File < ApplicationRecord
     validates :ref,
               presence: true,
-              allow_blank: false,
               uniqueness: { case_sensitive: false }
+    validates :data, presence: true
   end
 end

spec/dummy/app/models/post.rb

@@ -5,5 +5,5 @@ class Post < ApplicationRecord
     attachable.variant :thumb, resize_to_limit: [100, 100]
   end
 
-  validates :title, presence: true, allow_blank: false
+  validates :title, presence: true
 end

spec/models/active_storage_db/file_spec.rb

@@ -41,6 +41,15 @@
         )
       end
     end
+
+    context "when data is nil" do
+      it "raises record invalid exception" do
+        expect { create(:active_storage_db_file, data: nil) }.to raise_exception(
+          ActiveRecord::RecordInvalid,
+          /Data can't be blank/
+        )
+      end
+    end
   end
 
   describe "CRUD lifecycle" do