Forum: Ruby on Rails Persistance of good data on validation fail

Thank you everyone for the previous validation help.  I have one last
question... Can anyone tell me if there is a standard way to deal with a
failed
validation and loss of the data that was partially completed on the
form. I currently use a redirect back to the same action and lose all
the data (obviously).  Do I send valid data back and forth in the
params hash?

if @question.errors.any?
redirect_to(:controller => "questions", :action => "new",
:minisection_id => session[:minisection_id], :question_type =>
"standard")

There has to be a standard way to do this I assume...

render the view - @question will be given to the view for rendering the
previous values

render :new if @question.errors.any?

further this url will help with any other questions

http://guides.rubyonrails.org/layouts_and_rendering.html

Jodi S. wrote in post #1099859:
> further this url will help with any other questions
>
> http://guides.rubyonrails.org/layouts_and_rendering.html

Thank you.

When I "render :new",  the view gets called correctly but there is a 
partial in the new.html.erb view which does not render.

<%= form_for @question, :as=> :question,  :url => { :action => "create"} 
do |f| %>
  <% if @question_type == "standard" %>
      <%= render 'new_and_edit_fields', f: f %>

Can I not render a render??

Never mind... got it!

@question_type == "standard"

Dave, consider this refactor

create an instance method in your question model

def standard?
  question_type == "standard"
end

then your view/controller syntax get a bit more readable

@question.standard?

On 2 March 2013 17:23, Dave Castellano <lists@ruby-forum.com> wrote:
> Thank you everyone for the previous validation help.  I have one last
> question... Can anyone tell me if there is a standard way to deal with a
> failed
> validation and loss of the data that was partially completed on the
> form. I currently use a redirect back to the same action and lose all
> the data (obviously).  Do I send valid data back and forth in the
> params hash?

My standard response for beginners who have not yet got the basics of
rails is to work right through a good tutorial such as
railstutorial.org, which is free to use online.  That should cover
your question and many others that you have yet to ask.

Colin