Question

i have model question with text and token fields. Want to add data into this via scaffold.

This is my question_ controller

  def create
    # @question = Question.new(params[:question])
      @question = Question.create(:text => params[:text], :security_token => Digest::SHA1.hexdigest(rand(1000000).to_s))
    render :json => @question.to_ext_json(:success => @question.save)
  end

When i press “ADD” button i get in console this:

  Question Create (0.0ms)   Mysql::Error: Column 'text' cannot be null: INSERT INTO `questions` (`created_at`, `updated_at`, `text`, `security_token`) VALUES('2011-04-05 09:07:37', '2011-04-05 09:07:37', NULL, 'bf44551f11ce202b88d521a1826ab6db4254ce55')

Why COlumn ‘text’ can’t be null?

Answer 1

You created the text column for the questions table with a NOT NULL constraint, and params[:text] is probably nil.

Since you used the scaffolding form params[:question][:text] returns the contents for text, not params[:text]!