Rails - Aug 2012 - Paginate an array

My controller code is as follows,


  def index
  end

  def show
    if params[:cat_id]
    # cat_id is fetched from DB(a table with two columns id and name)
    #mapped as cat_id in routes file
      @articles = Article.find_all_by_name(params[:cat_id].gsub(/\-/, ''
''))
      render :action => :index
    end
  end

How to do pagination using will_paginate on this.

Here @articles is an array which fetches articles based on category
names. The output of this is as follows,

An index page with 3 category names and relevant articles under each
category. Now i need to apply will_paginate under each category in index
page. How to do this. Adding ".paginate(:page => params[:page],
:per_page =>3) returns undefined method ''total pages'' since
its an
array. Could you please advise me as to how pagination can be done.
Further, the url structure is article/categoryname/articlename (formed
using slug).

-- 
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
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit https://groups.google.com/groups/opt_out.

On Wednesday, 29 August 2012 08:07:18 UTC-5, Ruby-Forum.com User
wrote:
>
> My controller code is as follows, 
>
>
>   def index 
>   end 
>
>   def show 
>     if params[:cat_id] 
>     # cat_id is fetched from DB(a table with two columns id and name) 
>     #mapped as cat_id in routes file 
>       @articles = Article.find_all_by_name(params[:cat_id].gsub(/\-/,
''
> '')) 
>       render :action => :index 
>     end 
>   end 
>
> How to do pagination using will_paginate on this. 
>
> Here @articles is an array which fetches articles based on category 
> names. The output of this is as follows, 
>
> An index page with 3 category names and relevant articles under each 
> category. Now i need to apply will_paginate under each category in index 
> page. How to do this. Adding ".paginate(:page => params[:page], 
> :per_page =>3) returns undefined method ''total pages''
since its an
> array. Could you please advise me as to how pagination can be done. 
> Further, the url structure is article/categoryname/articlename (formed 
> using slug). 
>

Use where instead of the find_by helpers.

`Article.where("name = ?", params[:cat_id].gsub(/\-/,
'''')).paginate({
  :page => params[:page], :per_page =>3 })`

find_all_by_* does it''s job literally, it finds them all and it defeats
the
logic in it''s name to add pagination to it.  So if you want pagination
use
where.

-- 
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
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To view this discussion on the web visit
https://groups.google.com/d/msg/rubyonrails-talk/-/nwdMDP2b1RUJ.
For more options, visit https://groups.google.com/groups/opt_out.