undefined local variable or method?

rubyonrails-talk
1

I have: <%= form_for(@supplier) do |f| %> ....... ...... <%= render 'sector_categories', :locals => {:f => f} %>

in _sector_categories partial I have:

<div class="field">   <div id="category_update">     <% for category in @categories %>       <%= f.check_box :category_ids, category.id, @supplier.categories.include?(category) %>       <%= category.name %><br />     <% end %>   </div> </div>

Why it says: undefined local variable or method "f"?

2

Quoting Mauro <mrsanna1@gmail.com>:

I have: <%= form_for(@supplier) do |f| %> ....... ...... <%= render 'sector_categories', :locals => {:f => f} %>

in _sector_categories partial I have:

<div class="field">   <div id="category_update">     <% for category in @categories %>       <%= f.check_box :category_ids, category.id, @supplier.categories.include?(category) %>       <%= category.name %><br />     <% end %>   </div> </div>

Why it says: undefined local variable or method "f"?

As written, you are rendering a template, not a partial. Passing local variables to templates is not supported. Do you mean

<%= render :partial => 'sector_categories', :locals => {:f => f} %>

HTH,   Jeffrey

3

But if I create a new application using scaffold I see a code like this: <%= render 'form' %> and a file _form.html.rb. So it is a partial but the render command doesn't have :partial. What's correct?

4

As you see in Layouts and Rendering in Rails — Ruby on Rails Guides there is no need to specify :partial.

5

Quoting Mauro <mrsanna1@gmail.com>:

6

Quoting Mauro <mrsanna1@gmail.com>:

> Quoting Mauro <mrsanna1@gmail.com>: >> I have: >> <%= form_for(@supplier) do |f| %> >> ....... >> ...... >> <%= render 'sector_categories', :locals => {:f => f} %> >> >> in _sector_categories partial I have: >> >> <div class="field"> >> <div id="category_update"> >> <% for category in @categories %> >> <%= f.check_box :category_ids, category.id, >> @supplier.categories.include?(category) %> >> <%= category.name %><br /> >> <% end %> >> </div> >> </div> >> >> Why it says: undefined local variable or method "f"? >> > > As written, you are rendering a template, not a partial. Passing local > variables to templates is not supported. Do you mean > > <%= render :partial => 'sector_categories', :locals => {:f => f} %>

As you see in Layouts and Rendering in Rails — Ruby on Rails Guides there is no need to specify :partial.

Look again. Every example on that page with :locals, explicitly specifies :partial.

Your way isn't working. How about trying something different. The only way you will find out if the Rails 2 convention, locals only for partials, is or isn't true in Rails 3 is trying it. You have shown that without :partial and possibly some other factor, locals don't work. Change only one thing and run the experiment again.

Jeffrey

7

You are right, so I've have notice that with rails 3 there is no need to specify :partial unless I use local variables.