i am new to rails & using Trestle Admin as an easy backend solution for my app.
When i try to delete an item in the trestle admin backend, i get following error:
PG::ForeignKeyViolation: ERROR: update or delete on table "AAA" violates foreign > key constraint "fk_rails_xxxxxx" on table "BBB" DETAIL: Key (id)=(2) is still referenced from table "BBB".
Thats fine but instead of showing an application error i would like to check for the error and display a custom alert message. I don't know how this is possibly with trestle.. Has anyone an idea how to archive this?
Thanks
CodePudding user response:
I figured out that i simply can do something like this, which fixed my issue:
controller do
def index; end
def destroy
if SecondModal.where(xxx_id: params[:id]).length > 0
flash[:error] = "Record was not destroyed, because it's still referenced in other tables"
redirect_to admin.path(:index)
else
FirstModal.delete(params[:id])
flash[:success] = 'Record destroyed'
redirect_to admin.path(:index)
end
end
end