Pre-populating a form field from a link

Question

I'm trying to pre-populate a string field in a form when a link is clicked. I've tried:

$<%= link_to "New product", new_product_path(:product_name => "foo") %>

and

$<%= link_to "New product", new_product_path(:name => "foo") %>

Both didn't work. Anyone has any idea?

Answer 1

Try this, <%= f.text_field :name,:value=>(@product.new_record? ? params[:name] : @product.name )%> or in new action

def new
@product = Product.new(:name=>params[:name])
end
<%= f.text_field :name %>