Rails - May 2006 - RJS behave differently than render :partial?

I have a method in my controller like the following (the syntax may not 
be correct, I''m doing this from memory - you should be able to get the 
idea though) My rhtml page has a DIV with id="country_areas", which 
contains a partial that only makes a drop down of country areas for a 
specific country. When changing the country in the country drop down, it 
uses the :observe_field to call the below method and refresh the 
country_areas partial.

def find_country_areas
  @country_areas = Country.find(:all, :condition => ("country_id
=?",
params[:country_id]) )
  render :partial => "country_areas", :object => @country_areas
end

The country areas drop down is getting changed to reflect those country 
areas that are for a specific country, so all is well.

Now if I change the above method to:

def find_country_areas
  @country_areas = Country.find(:all, :condition => ("country_id
=?",
params[:country_id]) )
end

and use a find_country_areas.rjs:

page.relace ''country_areas'', :partial =>
''country_areas'', :object =>
''@country_areas''

it works correctly the first time I change a country. But any subsequent 
changes to the country drop down do not re-render the partial at all (ie 
the same areas are populated as the first country I selected). My method 
is getting called, but no refresh of the partial.

Why do these behave differently? I want to use rjs because ultimately I 
have two partials that I want to refresh.

Thanks
Brian

-- 
Posted via http://www.ruby-forum.com/.

Hi !

2006/5/17, Brian Nice <bnice_99@yahoo.com>:
> page.relace ''country_areas'', :partial =>
''country_areas'', :object =>
> ''@country_areas''
Don''t pass a string as the object, but do pass the instance variable.

page.relace ''country_areas'', :partial =>
''country_areas'',
    :object => @country_areas

Notice no apostrophes around@contry_areas.  You had an error because
your partial was receiving a String object when it expected an
Enumerable.

Bye !
-- 
Fran?ois Beausoleil
http://blog.teksol.info/

Fran?ois Beausoleil wrote:
> Hi !
> 
> 2006/5/17, Brian Nice <bnice_99@yahoo.com>:
>> page.relace ''country_areas'', :partial =>
''country_areas'', :object =>
>> ''@country_areas''
> 
> Don''t pass a string as the object, but do pass the instance
variable.
> 
> page.relace ''country_areas'', :partial =>
''country_areas'',
>     :object => @country_areas
> 
> Notice no apostrophes around@contry_areas.  You had an error because
> your partial was receiving a String object when it expected an
> Enumerable.
> 
> Bye !
I think that is the way I have it - without quotes (sorry trying to 
remember something that is at home while I am at work). Otherwise, I 
don''t think it would even work the first time. Is there anything else 
that would cause these to work differently?

-- 
Posted via http://www.ruby-forum.com/.

Look at the generated code and you should see the difference.  I
imagine it''s the difference between one replacing the innerHTML and
the other the outerHTML.  Note that render :partial is not the same
things as page.replace.

Michael