On 14 May 2012 14:11, Tuckie <[email protected]> wrote:
> I'm working on creating a model that allows redirect to another
> instance of the same type (Page). For obvious reasons, I don't want
> it to be able to redirect to itself. How can I get the model to
> properly filter this relationship? I'm currently getting the error:
>
> Mysql2::Error: You have an error in your SQL syntax; check the manual
> that corresponds to your MySQL server version for the right syntax to
> use near '' at line 1: SELECT `pages`.* FROM `pages` WHERE (id !=
> #{self.id})
>
> From what I've read, it should be replacing #{self.id} with the
> current instance.
>
> class Page < ActiveRecord::Base
> has_ancestry
> belongs_to :footer,
> :foreign_key => 'footer_id',
> :class_name => 'ReusableText'
> belongs_to :redirect_to_page,
> :foreign_key => 'redirect_to_page_id',
> :class_name => 'Page',
> :conditions => 'id != #{self.id}'
>
Use double quotes, not single quotes around "id != #{self.id}"
You might be better doing the following instead to avoid SQL injection:
:conditions => ['id != ?', self.id]
Jeremy Walker
> ...
>
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