Return only some resources from 2 tables

Rails
1

Hello,

I’m having trouble selecting only some specific resources from 2 tables.
That’s my code:
categories = %w{cat1 cat2 cat3}
categories.each { |category|
cat = CharacterAttributeCategory.find_by_name category
@character_attribute_types +=
CharacterAttributeType.find_all_by_character_attribute_category_id
cat.id
}

I tried << before but that doesn’t work as well. I get following error:
NoMethodError in CharactersController#new

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.+

Any hints?

2

On Wed, 11 Mar 2009 18:12:12 +0100
Heinz S. [email protected] wrote:

I’m having trouble selecting only some specific resources from 2 tables.
That’s my code:
categories = %w{cat1 cat2 cat3}
categories.each { |category|
cat = CharacterAttributeCategory.find_by_name category
@character_attribute_types +=
CharacterAttributeType.find_all_by_character_attribute_category_id
cat.id
}

Do you mean this?

@character_attribute_types = []
@character_attribute_types <<
CharacterAttributeType.find_all_by_character_attribute_category_id

SH

–
Starr H.
My blog: http://starrhorne.com
Check out my Helpdesk RailsKit: http://railskits.com/helpdesk/

3

Hey,

I just tried that, didn’t help. Here’s the error:
characters_controller.rb:21: syntax error, unexpected tIDENTIFIER,
expecting ‘}’ @character_attribute_types <<
CharacterAttributeType.find_all_by_character_attribute_type_category_id
cat.id