Rails 4-迁移到Postgresql后出现CRUD错误

Question

I've just migrated my database from sqlite to postgresql and I'm encountering some issue with destroy action that was working fine when database was sqlite.

Requested parameter contains id value and this id exists in the database and it will destroy just fine although I see this error screen. I'm not sure what this is complaining about.

controller

before_action :find_recipe, only: [:show, :edit, :update, :destroy]

...

def destroy
  Recipe.destroy(params[:id])
  redirect_to :back, notice: "Recipe successfully deleted"
end

private
  def find_recipe
    @recipe = Recipe.find(params[:id])
  end

Answer 1

This error does not appear related to the destroy at all, it appears to be attempting to show the record. Most likely you redirected back to the record's show page after destroying it.

Flow:

• /show/5 (you click destroy)
• /destroy/5 (destroys record)
• /show/5 (via redirect_to :back, but the ID no longer exists)