Rails newbie: How does the submit_tag work?

Rails
1

I would appreciate any and all input. The Agile book is not useful in
this context. :o(

As near as I can tell, it doesn’t work at all.

I would expect that clicking on the [Next Question] button in the
browser would fire the next_question method in the current controller.

Instead, it (apparently) does nothing.

The tag in question

 <%= submit_tag 'Next Question' %>

expands to

 <input name="next_question" type="submit" value="Next Question" />

RHTML follows:

<% javascript_include_tag "prototype" %>

<%= @quizrun.quiz.name %>

<%= @quizrun.user.name %>

Question <%= @question.seq %>

<%= @question.presentation.textvalue %>
<% if [email protected]? answers = Answers.find (:all, :conditions => "parent_id = " + @question.id.to_s) for answer in answers presentation = Presentations.find_by_id (answer.presentation_id.to_s); -%> <% end end %>
Check Possible Answers
<%= submit_tag 'Next Question' %>
2

Hi David,

David J. wrote:

I would expect that clicking on the
[Next Question] button in the browser
would fire the next_question method in
the current controller.

Instead, it (apparently) does nothing.

Rails is a lot easier than this. The submit or submit_tag methods in
Rails
work in the context of a form or form_tag. The code you provided has
neither.

hth,
Bill

3

This is actually an HTML question. The method and controller that
receives your form submission is determined by the action in the form
start tag. Look at form_tag. <Peak Obsession
ActionView/Helpers/FormTagHelper.html#M000491>. You can have
multiple submit buttons, but they just return name/value pairs like
other form objects.

As an example, the following in a edit.rhtml submits the form to the
update method of the same controller:

<%= form_tag :action => ‘update’, :id => ‘update_form’ %>

        - dan

–
Dan K. mailto:[email protected]
http://www.dankohn.com/ tel:+1-415-233-1000

4

Thanks (both of you)

I knew it was a newbie question.

Learning rails involves four new programming languages (ruby, html,
rhtml tag libs, and javascript), plus a different programming paradigm.

I’m on the right track now.