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Milo Thurston

2007-Feb-28 17:21 UTC

Find works in view but not controller

Part of my application should show a list of all users on the system who
agreed to have their details revealed. So, I have an action like this:

def view_users
  @users = User.find(:all,:conditions=>"reveal =
1",:order=>"login
DESC")
end

In the associated view, @users is an object of nilclass and the app.
breaks as it tries to iterate over the @users array. However, if I
include this at the top of view_users.rhtml

<% @users = User.find(:all,:conditions=>"reveal =
1",:order=>"login
DESC") %>

...then everything works as expected.Why should this be?
Thanks.

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Philip Hallstrom

2007-Mar-02 00:22 UTC

head link

Re: Find works in view but not controller

> Part of my application should show a list of all users on the system who
> agreed to have their details revealed. So, I have an action like this:
>
> def view_users
>  @users = User.find(:all,:conditions=>"reveal =
1",:order=>"login
> DESC")
> end
>
> In the associated view, @users is an object of nilclass and the app.
> breaks as it tries to iterate over the @users array. However, if I
> include this at the top of view_users.rhtml
>
> <% @users = User.find(:all,:conditions=>"reveal =
1",:order=>"login
> DESC") %>
>
> ...then everything works as expected.Why should this be?
My guess is that somewhere (perhaps an after_filter or a partial)
you''re
setting @users to nil.

What happens if in your controller right after that find() call you do:

render :text => @users.inspect, :layout => false
return

Do you get all your users then?

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Milo Thurston

2007-Mar-02 09:24 UTC

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Re: Find works in view but not controller

Philip Hallstrom wrote:> What happens if in your controller right after that find() call you do:
> 
> render :text => @users.inspect, :layout => false
> return
> 
> Do you get all your users then?
That works - many thanks.

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Christoph Olszowka

2007-Mar-02 11:30 UTC

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Problem with functional test & RESTful url-helpers

Hello there,

I ran into a problem with my shiny new RESTful controller.
One of it''s partial templates is using a custom member
action''s
url helper created by map.resources, e.g. "something_model_url(id)".
This works perfectly when I try it in my webbrowser, but my functional
test fails when it gets to "display" the mentioned partial, telling
me:
Exception: undefined method "something_model_url" for
#<#<Class...>
On line #22 of (...)

Obviously the helper does not get defined. I already know that the
routing is not being processed in functional tests due to performance
reasons, but there must be a way to still access my partials?! So
I guess I am searching for the magic "bring me some url-helpers"
trigger
in my functional tests. Any suggestions will be greatly appreciated!

Greetings,
Christoph


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Philip Hallstrom

2007-Mar-02 16:20 UTC

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Re: Find works in view but not controller

> Philip Hallstrom wrote:
>> What happens if in your controller right after that find() call you do:
>>
>> render :text => @users.inspect, :layout => false
>> return
>>
>> Do you get all your users then?
>
> That works - many thanks.
Then somewhere after your find() call, but before your view you are 
trashing @users....

:/

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Bill Walton

2007-Mar-02 17:19 UTC

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Re: Find works in view but not controller

Just to add a quick note about a ''gotcha'' that bit me in the
early days...

Philip Hallstrom wrote:> Then somewhere after your find() call, but before 
> your view you are trashing @users....
If you''re doing a redirect_to, that''ll trash your instance
variables.

Best regarsd,
Bill


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Milo Thurston

2007-Mar-02 17:25 UTC

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Re: Find works in view but not controller

Bill Walton wrote:> If you''re doing a redirect_to, that''ll trash your
instance variables.
All fixed now, thanks.
This has been useful at improving my understanding of how rails works.

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Christoph Olszowka

2007-Mar-06 15:13 UTC

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Re: RESTful URL-Helpers causing functional test failure

Hi Folks,

I still can''t figure out what the problem could be. It seems
it''s
only the singular_url helpers that are missing, the plural_url helpers
do not lead to test failure. Did really no one else run into something
like this?

Greetings,
Christoph

Christoph Olszowka schrieb:> Hello there,
> 
> I ran into a problem with my shiny new RESTful controller.
> One of it''s partial templates is using a custom member
action''s
> url helper created by map.resources, e.g.
"something_model_url(id)".
> This works perfectly when I try it in my webbrowser, but my functional
> test fails when it gets to "display" the mentioned partial,
telling
> me:
> Exception: undefined method "something_model_url" for
#<#<Class...>
> On line #22 of (...)
> 
> Obviously the helper does not get defined. I already know that the
> routing is not being processed in functional tests due to performance
> reasons, but there must be a way to still access my partials?! So
> I guess I am searching for the magic "bring me some url-helpers"
trigger
> in my functional tests. Any suggestions will be greatly appreciated!
> 
> Greetings,
> Christoph
> 
> 
> > 

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