How to add default value to a number_field in rails?

Question

I\'ve created a form

<%= form_for [current_user,@product,@bid] do |f| %>
  
<%= f.number_field :bid_amount %>
  
<%= f.n         


        

Answer 1

I'm assuming bid belongs to product. Therefore product_id should not be on form at all for the user to see. As an id number it's meaningless and it must be set to the correct product for all bids.

The action on the form will automatically mean it gets set correctly in the database.