Undefined method `find_all'

Rails
1

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.

2

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)

3

undefined method `find’ for Test:Module

still getting the error.

4

show some code. be more describing …

5

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

end

var2.each do |record2|
record2.name

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

6

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

Mark

On 10/26/06, mmaki [email protected] wrote:

bump please help

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Mark Van H.
[email protected]
http://lotswholetime.com

7

bump please help

8

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.

9

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.

10

On 17 November 2011 09:18, gbolahan a. [email protected] 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

11

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.map
seems there something i dont get

12

On 17 November 2011 13:11, gbolahan a. [email protected] 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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13

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

14

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.map
seems there something i dont get

15

On 17 November 2011 13:56, gbolahan a. [email protected] 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

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