On Dec 13, 6:07 pm, mwlang88 <[email protected]> wrote:
> So, here's the Chicken and Egg problem:
>
> I am trying to assign the generated slug for the page to a
> pages::slug_id column so that I have quick, direct access to the slug
> that is the one to be used to generate URLs in the CMS when rendering
> links to the page.
>
> I cannot associate a slug to a page until after the page has been
> saved and an ID for the page is known. Thus, I cannot associate the
> slug to the page in the before_save, after_create, or after_initialize
> callbacks.
I would think it possible to create it in an after_save callback:
class Slug
def page_name=(s)
self.name = s.gsub(/[^- \w]/, '').gsub(' ', '-').downcase
end
end
class Page
def after_save
super
update(:slug_id => add_slug(:page_name=>name).id) unless slug_id
end
end
> If I try to associate the slug to the page in the page's after_save
> callback, then the slug_id for the page doesn't get populated with the
> slug record's id.
The above should work, though it requires a separate update query
after the insert.
> This is my two models:
>
> class Page < Sequel::Model
> many_to_one :slug
> end
>
> class Slug < Sequel::Model
> many_to_one :page
> end
>
> Ideally, I would like to do something like the following:
>
> new_page = Page.new(:name => "Michael's Awesome Home Page")
> new_page.add_slug("index.html)
You can't do the add_slug until after the object is saved, because it
requires the page's id. You can use the instance hooks plugin:
Page.plugin :instance_hooks
new_page.after_save_hook{new_page.add_slug(:name=>'index.html')}
> new_page.save
> and have:
>
> Page.first ==>
> :id => 1
> :name => "Michael's Awesome Home Page"
> :slug_id => 1
>
> Slug.first ==>
> :id => 1
> :page_id => 1
> :name => 'michaels-awesome-home-page'
>
> Slug.last ==>
> :id => 2
> :page_id => 1
> :name => 'index.html'
This result should be possible using code similar to what I've shown
above.
Jeremy
--
You received this message because you are subscribed to the Google Groups
"sequel-talk" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sequel-talk?hl=en.
