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mmaki

2006-Oct-23 10:56 UTC

undefined method `find_all''

when i load the page which pulls the records from a database, using
''find_all'' in the controller it works fine.

However when i reload the page i get the following error:

undefined method `find_all''

i have another list of records on the same page that are pulled from
another table and i never get this problem.

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Thorsten L

2006-Oct-23 11:40 UTC

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Re: undefined method `find_all''

dont know if it might help, but find_all will be deprecated in next
versions of RoR soon if i recall correctly...
use find(:all)


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mmaki

2006-Oct-23 13:41 UTC

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Re: undefined method `find_all''

undefined method `find'' for Test:Module

still getting the error.


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Thorsten L

2006-Oct-23 13:52 UTC

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Re: undefined method `find_all''

show some code. be more describing ...


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mmaki

2006-Oct-24 12:10 UTC

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Re: undefined method `find_all''

Thorsten L wrote:> show some code. be more describing ...
i have a controller for the first page which displays the records for 2 
tables in my database.

CONTROLLER 1
---------------

var1 = Table1.find(:all)
var2 = Table2.find(:all)

VIEW 1
---------

the view for this displays all of the records, along with checkboxes.

form action = "/another_controler/run"

var1.each do |record|
  record.name
  <input type=checkbox name=group[] value=record.value>
end

var2.each do |record2|
  record2.name
  <input type=checkbox name=group2[] value=record2.value>
end

CONTROLLER 2
--------------

the params from view 1 are passed to controller 2

def run

  variable1 = params[''group'']
  variable2 = params[''group2'']

  variable2.each{
    |x|

    variable1.each{
      |y|

      # y is then passed to a new object
      newVariable = Class.new(y)

      #methods are invoked depending on what x is equal too
      # eg...
      if x == ''example''
        newVariable.example()
      end
    }
  }
end

VIEW 2
--------

the view for run displays variable1

variable1.each |y|
  y.name
end


THE PROBLEM
-------------

i have written my code in short hand just to give you an idea of the 
structure.

the problem i have is that when the view for run (VIEW2) is invoked, 
when i go back to the first page i get the follwing error:

  undefined method ''find'' for Table1:Module

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mmaki

2006-Oct-26 08:07 UTC

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Re: undefined method `find_all''

bump please help

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Mark Van Holstyn

2006-Oct-26 11:11 UTC

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Re: undefined method `find_all''

Could you provide an actual copy of the code that is failing?

Mark

On 10/26/06, mmaki
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:>
>
> bump please help
>
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>

-- 
Mark Van Holstyn
mvette13-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
http://lotswholetime.com


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mmaki

2006-Oct-26 11:37 UTC

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Re: undefined method `find_all''

hi, thanks for you responses, i seem to have resolved the issue now.

the model that was causing the problems was named Test, i renamed it and 
now it works.

i assume Test is a keyword or something.


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gbolahan a.

2011-Nov-17 09:18 UTC

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using the collection_select helper

i had the following error while trying to implement Collection _select 
in making a drop down of items in two models

You have a nil object when you didn''t expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.map

my code in the  views is as follows:

<%= collection_select("category",
"category_id",@categorys, "id",
"category_type") %>
I need guidance on how to properly do this, thanks for the support 
yesterday.

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Colin Law

2011-Nov-17 09:33 UTC

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Re: using the collection_select helper

On 17 November 2011 09:18, gbolahan a.
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> i had the following error while trying to implement Collection _select
> in making a drop down of items in two models
>
> You have a nil object when you didn''t expect it!
> You might have expected an instance of Array.
> The error occurred while evaluating nil.map
>
> my code in the  views is as follows:
>
> <%= collection_select("category",
"category_id",@categorys, "id",
The error probably means that @categorys is nil, did you mean
@categories possibly?

Colin
> "category_type") %>
> I need guidance on how to properly do this, thanks for the support
> yesterday.
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gbolahan a.

2011-Nov-17 13:11 UTC

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Re: undefined method `find_all''

i have modified my code as follows:

<%= collection_select(:category, :id, @categories, :id, :category_type, 
options ={:prompt => "-Select a Category"}, :class
=>"category") %>

i Hav also modified the definition in my controllers as follows:

@categories = category.find(:all)

You have a nil object when you didn''t expect
it!> You might have expected an instance of Array.
> The error occurred while evaluating nil.mapseems there something i dont get

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Peter De Berdt

2011-Nov-17 13:19 UTC

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Re: Re: undefined method `find_all''

On 17 Nov 2011, at 14:11, gbolahan a. wrote:
> i Hav also modified the definition in my controllers as follows:
>
> @categories = category.find(:all)
Classes should have a capital:

Category.find(:all)

and you could even bring this down to:

Category.all


Best regards

Peter De Berdt

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Colin Law

2011-Nov-17 13:19 UTC

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Re: Re: undefined method `find_all''

On 17 November 2011 13:11, gbolahan a.
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> i have modified my code as follows:
>
> <%= collection_select(:category, :id, @categories, :id, :category_type,
> options ={:prompt => "-Select a Category"}, :class
=>"category") %>
>
> i Hav also modified the definition in my controllers as follows:
>
> @categories = category.find(:all)
That should be Category.find(:all)
>
> You have a nil object when you didn''t expect it!
>> You might have expected an instance of Array.
>> The error occurred while evaluating nil.map
> seems there something i dont get
You have not said where that error occurs, but wherever it is
something is nil.  Have a look at the Rails Guide on Debugging, that
will show you how to use ruby-debug to break into code, inspect data
and follow the flow.  Then when you get this sort of error you can put
in breakpoints and check each of the variables to find which one is
nil.

Colin
>
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gbolahan a.

2011-Nov-17 13:56 UTC

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Re: undefined method `find_all''

i have modified my code as follows:

<%= collection_select(:category, :id, @categories, :id, :category_type,
options ={:prompt => "-Select a Category"}, :class
=>"category") %>

i Hav also modified the definition in my controllers as follows:

@categories = category.find(:all)

but it still gives me the following error

You have a nil object when you didn''t expect
it!> You might have expected an instance of Array.
> The error occurred while evaluating nil.mapseems there something i dont get

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Colin Law

2011-Nov-17 15:26 UTC

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Re: Re: undefined method `find_all''

On 17 November 2011 13:56, gbolahan a.
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> i have modified my code as follows:
>
> <%= collection_select(:category, :id, @categories, :id, :category_type,
> options ={:prompt => "-Select a Category"}, :class
=>"category") %>
>
> i Hav also modified the definition in my controllers as follows:
>
> @categories = category.find(:all)
>
> but it still gives me the following error
You have not said, but I presume that you mean that it still gives you
the error with Category.find.  How did you get on with ruby-debug?

Colin
>
> You have a nil object when you didn''t expect it!
>> You might have expected an instance of Array.
>> The error occurred while evaluating nil.map
> seems there something i dont get
>
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>


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Rails - Oct 2006 - undefined method `find_all'

undefined method `find_all''

Re: undefined method `find_all''

Re: undefined method `find_all''

Re: undefined method `find_all''

Re: undefined method `find_all''

Re: undefined method `find_all''

Re: undefined method `find_all''

Re: undefined method `find_all''

using the collection_select helper

Re: using the collection_select helper

Re: undefined method `find_all''

Re: Re: undefined method `find_all''

Re: Re: undefined method `find_all''

Re: undefined method `find_all''

Re: Re: undefined method `find_all''