Rails - Apr 2006 - wrong number of arguments (2 for 1)

Hi,

Im having trouble figuring out how to query my database in ruby and
i''m hoping someone can help me out.

I''d like to find all my departments that match a permalink passed from
the url. The department must also match a particular category, also
passed through the url.

I have written the following code. But unfortunatley I get an error
"wrong number of arguments (2 for 1)"

category = params[:category]
department = params[:department]

@departments = Department.find(:all, :conditions => ["permalink =
?",
department])
@department = @departments.find(:all, :conditions => ["category =
?", category])


If anyone could shed some light on this it would be greatly appreciated.
Thanks,
Paul.

--
_________________________
http://www.paulsturgess.co.uk

>I''d like to find all my departments that match a permalink passed
from
>the url. The department must also match a particular category, also
>passed through the url.
>
>I have written the following code. But unfortunatley I get an error
>"wrong number of arguments (2 for 1)"
>
>category = params[:category]
>department = params[:department]
>
>@departments = Department.find(:all, :conditions => ["permalink =
?",
>department])
>@department = @departments.find(:all, :conditions => ["category
>?", category])
Is this an exact copy of the code?  The find :all will return a hash  
even if there is only one result row.  So in the above @department will  
always be a hash.

If you want only one department then use find :first which returns a  
scaler of the row.

As an aside you can also combine the two statements:

@department = Department.find(:first, :conditions => ["permalink = ? and
category = ?", department, category])



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Hello Paul,
> I''d like to find all my departments that match a permalink passed
> from the url. The department must also match a particular category,
> also passed through the url.
>
> I have written the following code. But unfortunatley I get an error
> "wrong number of arguments (2 for 1)"
>
> category = params[:category]
> department = params[:department]
>
> @departments = Department.find(:all, :conditions => ["permalink =
?",
> department])
> @department = @departments.find(:all, :conditions => ["category =
?", category])
@departments is an array of Department objects created by
the class method Department#find.

In the second line, since @departments is an array, you are using
Enumerable#find which require 0 or 1 argument and 1 block.
So that''s not the find method you want to use, and that''s not
the
right way to use Enumerable#find as well :)

so you''d better do :

@departments = Department.find(:all,
:conditions => ["permalink = :department  AND category =
:category",
params ])

   -- Jean-Fran?ois.

--
? la renverse.

The code below gives me the following error:
wrong number of arguments (2 for 1)

It goes though this code twice. The first everything works and it 
prints:
Q*** Action name is index
Q*** Controller name is welcome
protect? welcome / index

The second time, I get this error and it prints:
Q*** Action name is signup
Q*** Controller name is user

It seems like it should work.

Any ideas?

module UserSystem
...

  def protect?(controller, action)
    puts "protect? #{controller} / #{action}"
    if [''welcome'',
''user''].include?(controller)
      return false
    else
      return true
    end
  end

  def login_required
    puts "Q*** Action name is #{action_name}"
    puts "Q*** Controller name is #{controller_name}"
    if not protect?(controller_name, action_name)
      return true
    end

    if user? and authorize?(@session[''user''])
      return true
    end

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

The code below gives me the following error:
wrong number of arguments (2 for 1)

It goes though this code twice. The first everything works and it
prints:
Q*** Action name is index
Q*** Controller name is welcome
protect? welcome / index

The second time, I get this error and it prints:
Q*** Action name is signup
Q*** Controller name is user

It seems like it should work.

Any ideas?

module UserSystem
...

  def protect?(controller, action)
    puts "protect? #{controller} / #{action}"
    if [''welcome'',
''user''].include?(controller)
      return false
    else
      return true
    end
  end

  def login_required
    puts "Q*** Action name is #{action_name}"
    puts "Q*** Controller name is #{controller_name}"
    if not protect?(controller_name, action_name)
      return true
    end

    if user? and authorize?(@session[''user''])
      return true
    end

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