formtastic - how to prepopulate a string input with a value

Question

I\'m building an app, where users can give comments by just leaving their email to the comment.

I want them to be able to register directly from there, by a link wit

Answer 1

Yup, you got the right answer all by yourself! Formtastic's rdoc is a mess, but we're working on it. Another option if you want this purely at a view level is to use the :input_html option, which gives you direct access to HTML attributes of the input tag:

f.input :email, :input_html => { :value => params[:email] }

Answer 2

sometimes the easiest things come to your mind by asking for them:

approach: do the job in the controller not the view!

if params[:email]
  @user = User.new(:email => params[:email])
else
  @user = User.new
end

sorry for bothering you!