Rails - Jan 2010 - Conditional named_scope chaining with params (Need help)

Hello there,

I have a model that has more then one named_scope.

In my action Index of the controller that handle this model I want to do
this in a drier way:

    if params[:ownership] == "mine"
        @posts = Post.tagged_with(params[:tags], :on =>
:tags).owner(current_user.id).paginate :all, :page => params[:page],
:order => ''created_at DESC''
    else
        @posts = Post.tagged_with(params[:tags], :on => :tags).paginate
:all, :page => params[:page], :order => ''created_at
DESC''
    end

This is just a example, I have a lot of options that is why I don''t
want
to use the if else end structure.

Thanks,

David Sousa
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On Tue, Jan 5, 2010 at 8:04 AM, David Sousa
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> Hello there,
>
> I have a model that has more then one named_scope.
>
> In my action Index of the controller that handle this model I want to do
> this in a drier way:
>
>    if params[:ownership] == "mine"
>        @posts = Post.tagged_with(params[:tags], :on =>
> :tags).owner(current_user.id).paginate :all, :page => params[:page],
> :order => ''created_at DESC''
>    else
>        @posts = Post.tagged_with(params[:tags], :on => :tags).paginate
> :all, :page => params[:page], :order => ''created_at
DESC''
>    end
>


  chain = Posts.tagged_with(params[:tags], :on => :tags)
  chain = chain.owner(current_user.id) if params[:owner]
  chain = chain.posted_since(params[:since]) if params[:since]

  @posts = chain.paginate(:page => params[:page], :order =>
"created_at
DESC")


>
> This is just a example, I have a lot of options that is why I
don''t want
> to use the if else end structure.
>
> Thanks,
>
> David Sousa
> --
> Posted via http://www.ruby-forum.com/.
>
> --
>
> You received this message because you are subscribed to the Google Groups
> "Ruby on Rails: Talk" group.
> To post to this group, send email to
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>
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> .
> For more options, visit this group at
> http://groups.google.com/group/rubyonrails-talk?hl=en.
>
>
>

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Thanks Chirs, I will give it a try!

David Sousa

Chris Flipse wrote:
>   chain = Posts.tagged_with(params[:tags], :on => :tags)
>   chain = chain.owner(current_user.id) if params[:owner]
>   chain = chain.posted_since(params[:since]) if params[:since]
> 
>   @posts = chain.paginate(:page => params[:page], :order =>
"created_at
> DESC")
> 
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