Satisfy Turbo requirement for 422 response on form errors

Author: David Heinemeier Hansson

lib/generators/rails/templates/controller.rb

@@ -36,7 +36,7 @@ def create
         format.html { redirect_to @<%= singular_table_name %>, notice: <%= %("#{human_name} was successfully created.") %> }
         format.json { render :show, status: :created, location: <%= "@#{singular_table_name}" %> }
       else
-        format.html { render :new }
+        format.html { render :new, status: :unprocessable_entity }
         format.json { render json: <%= "@#{orm_instance.errors}" %>, status: :unprocessable_entity }
       end
     end
@@ -50,7 +50,7 @@ def update
         format.html { redirect_to @<%= singular_table_name %>, notice: <%= %("#{human_name} was successfully updated.") %> }
         format.json { render :show, status: :ok, location: <%= "@#{singular_table_name}" %> }
       else
-        format.html { render :edit }
+        format.html { render :edit, status: :unprocessable_entity }
         format.json { render json: <%= "@#{orm_instance.errors}" %>, status: :unprocessable_entity }
       end
     end