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.
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