Rails Engine with Mongoid

Question

I'm creating standalone rails engine application which will be further added to main application, using mongoid. So, I started like this.

rails plugin new some_engine --mountable --skip-active-record

Then in the gem file:

gem 'mongoid', "~> 3.0.15"

Then I run this command for generating mongo config file:

some_engine\test\dummy>rails g mongoid:config

which generate mongoid.yml under test/dummy/config folder

Now if I generate some model it's still invoking active record

some_engine>rails generate scaffold post title:string

it gives output:

 invoke  active_record
 create    db/migrate/20121219170013_create_some_engine_posts.rb
...........

Then I change the rails file under script/rails folder as it's having:

require 'rails/all'

to

require "action_controller/railtie"
require "action_mailer/railtie"
require "active_resource/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"

Then if I generate something it still not invokes mongoid

some_engine>rails generate model post

Nothing happens here.

Also when I run

some_engine>rails generate scaffold post title:string

 invoke  resource_route.....

Is that I'm missing something here to use mongoid with Rails Engine?

Are you expecting a migration to be created? Mongodb doesn't require migrations. — regulatethis, Dec 19 '12 at 18:07
NO, I'm just expecting to use generators as normal. As you can see it doesn't generate model when I run rails g model command. Also when I create model manually it's not able to save the record. — joe nayyar, Dec 19 '12 at 18:13
http://stackoverflow.com/questions/6118905/rails-3-1-engine-vs-mountable-app Also check.. rails plugin --help — joe nayyar, Dec 19 '12 at 18:22

score 8 · Accepted Answer · answered Dec 19 '12 at 20:25

8

It sounds like mongoid still isn't loaded. I'm sorry, but I don't have time to reproduce. What happens if you explicitly require mongoid in the engine.rb file?

answered Dec 19 '12 at 20:25

astjohn

2,863
1
20
25

No problem. You might have to add require statements for anything else the engine relies on as well. – astjohn Dec 21 '12 at 00:22
`require 'mongoid' ` in `engine.rb` worked for me :) – ashwintastic Jun 20 '17 at 09:19

score 1 · Answer 2 · answered Jan 07 '14 at 13:50

1

In Rails 4 if we do not need active_resource.The generated plugin app has rails modules loaded in bin/rails.


require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"
require "mongoid"
require 'rails/engine/commands'

answered Jan 07 '14 at 13:50

Saurabh Bhatia

327
3
8

I have written a quick post about this, http://fedible.org/2014/07/13/rails-engines-with-mongoid/ . – Saurabh Bhatia Jul 14 '14 at 02:02

Rails Engine with Mongoid

2 Answers2