New to Rails... Help!

rubyonrails-talk
1

I am new to Ruby/InstantRails. I am using InstantRails 2.0.2 with mysql database

My application is named Area, it has two tables: people and country Table people has two columns: name and tribe Table country has two columns: location and population

In the models I have: class People < ActiveRecord::Base belongs_to :country end class Country < ActiveRecord::Base    has_many :peoples end

I have country_id in the people's table.

I know I can do this: <% @peoples.each do |people| %> <td><%= people.name %></td> <td><%= people.country.location %></td> // This works

What I want to do is to display location on country\index.html.erb

<% @countries.each do |country| %> <td><%= link_to country.location, :action => "show", :id => country.id %></td>

Then when I click on 'location' as a link, I want to display the 'tribe' along side with 'population' for that 'location' on view\country\show.html

<td><%=h @country.population %></td> // this works

<td><%=h @country.tribe %></td> // this does not works

My question is, how can I reference a column from the people's table with a country's object? I know it works the other round.

Please help! Cypray

2

I am sure there's a few ways of doing this. Here's an easy one: declare a method in the Country class and use that.

class Country   ....

  def people_tribes     peoples.map{|p|p.tribes}.join(',')   end end

now in your view use country.people_tribes

William

Jay Mark wrote:

3

class Country   ....

  def people_tribes     peoples.map{|p|p.tribe}.join(',')   end end

4

William, thanks for your help in resolving this issue. It works great now. Thanks a lot.

Please, if you know any good book or online material on Ruby/InstantRails 2.0.2, please post it in the Forum. Thanks Cypray

wfisk wrote:

5

Agile Web Development with Rails is the standard for getting up and running... also I like Practical Rest with Rails

6

Jay,

You're confusing Rails with InstantRails. Rails is the web framework, Instant Rails is a package containing Rails + web server + DB, etc.

Google for Rails books, there are also plenty of suggestions in other topics in this group. Finally, if you have the time, I would start by 1st learning Ruby and then moving to Rails with AWDR, The Rails Way, etc.

Cheers, Sazima

7

Sazima,

You are so right Sazima. I am confused like a beginner. Thanks for clearing that up for me. I have started learning Ruby. Thanks for all the suggestions guys.

Jay.

Sazima wrote: