string handling in Ruby on Rails bring difficulties

Question

I am using Cancan In my user model there is

ROLES = %w[admin user ram]

I want to bring the value from my own module .

 all= Role.all
 @all.each do |all|
 all.name
 end

Here i can carry all value that are in database from roll model. and i want to keep it inside %w[] like `

ROLES = %w[ all= Role.all
     @all.each do |all|
     all.name
     end]

But I don know the format.

use roles instead of ROLES as it is not a constant – Pritesh Jain Aug 15 '12 at 11:07 — Pritesh Jain, Aug 15 '12 at 11:07

score 2 · Answer 1 · answered Aug 15 '12 at 10:57

2

Try pluck:

ROLES = Role.pluck(:name)

answered Aug 15 '12 at 10:57

Mate Solymosi

undefined method `pluck' for Role:Class – regmiprem Aug 15 '12 at 11:04
Which version of ActiveRecord are you using? – Mate Solymosi Aug 18 '12 at 18:41
(cont.) Pluck is only available in Rails 3.2+ – Mate Solymosi Aug 18 '12 at 18:48

score 0 · Answer 2 · answered Aug 15 '12 at 11:02

0

%w[] is just a fancy way to create an array. If you want this should work the same way.

ROLES = @all.collect! {|item| item.name }

answered Aug 15 '12 at 11:02

Pablo Jomer

1.9.3p194 :001 > %w[admin user ram] => ["admin", "user", "ram"] I know it give such result. I want to bring my users in this format. – regmiprem Aug 15 '12 at 11:08

2 Answers2