You can read the Agile Web Development With Rails (http://
www.pragprog.com/titles/rails3), is a very good book. It explains step
by step the framework and a very common (but usefull) workflow.

Regards.

Franco Catena.

On Apr 24, 3:20 pm, haneef5k <[email protected]> wrote:
> Hi,
>
> Im new to Ror,  i want to do some userful website can u tell me ur
> advice and wat steps i should to take basically in Ruby on Rails..??
> then im trying to understand tat ( models, controller, action ) it
> confusssed..
> pls help me..
>
> [email protected]
>
> On Apr 24, 9:12 pm, Franco Catena <[email protected]> wrote:
>
> > You must declare a has_many :categories in the Post model and a
> > belongs_to :post in the Category model (if the category table has a
> > post_id column, if not keep reading). If you don't do that, you need
> > to create a categories_posts table with two columns: category_id and a
> > post_id.
>
> > Regards.
>
> > Franco Catena.
>
> > On Apr 24, 11:51 am, haneef5k <[email protected]> wrote:
>
> > > Im trying to see posts index page, In tat im showing category list, im
> > > using collect method it show error..
>
> > > ActiveRecord::StatementInvalid in Posts#index
> > > Showing app/views/posts/index.html.erb where line #19 raised:
>
> > > Mysql::Error: Unknown column 'categories_posts.category_id' in 'on
> > > clause': SELECT `categories`.* FROM `categories`  INNER JOIN
> > > `categories_posts` ON `categories`.id =
> > > `categories_posts`.category_id    WHERE ((`categories_posts`.post_id =
> > > 1))
>
> > > Extracted source (around line #19):
>
> > > 16:     <td><%= post.created_at.strftime('%m/%d/%y %I:%m %p') %></td>
> > > 17:     <td><%= h(post.title) %></td>
> > > 18:     <td><%= h(post.author.display_name) if post.author %></td>
> > > 19:     <td><%= post.categories.collect {|cat| [cat.name] }.join(",")
> > > %>
> > > 20:     <td><%= h(post.status) %></td>
> > > 21:     <td><%= post.comments_count %>
>
> > > pls help me,, im new to RoR..??- Hide quoted text -
>
> > - Show quoted text -
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