[ACCEPTED]-Rails Engine - Gems dependencies, how to load them into the application?-rails-engines
Include them in your gemfile and run bundle 9 install. Then require them in your
lib/<your_engine>/engine.rb file. Don't 8 forget to require rubygems
require 'rubygems' require 'paperclip' require 'jquery-rails' require 'rails3-jquery-autocomplete' require 'remotipart' require 'cancan'
Then in your host 7 app (The app where you included your gem) run 6 bundle install/ bundle update (bundle update 5 did the trick for me) and then everything 4 should work perfectly. You can also test 3 this by starting the console in your host 2 app and just type the module name e.g.
Loading development environment (Rails 3.0.3) irb(main):001:0> Paperclip => Paperclip
Hope 1 this helps
You can require them manually like Daniel 7 posted, and you can also require them automatically. You 6 need to add dependencies in 3 files:
s.add_dependency "rails", '4.1.0' s.add_dependency "sqlite3"
# Imports dependencies from yourengine.gemspec gemspec
# requires all dependencies Gem.loaded_specs['yourengine'].dependencies.each do |d| require d.name end require 'yourengine/engine' module Yourengine end
Update: It's 5 a simplistic demonstration of how to require 4 the dependencies. You should test it and 3 filter unwanted items, for example: require 2 d.name unless d.type == :development (thx 1 @imsinu9)
from paperclip's README :
For Non-Rails usage:
class ModuleName < ActiveRecord::Base include Paperclip::Glue ... end
I 2 had the same issue and that fixed it for 1 me.
You must add the gem file to both the .gemspec 6 file, and your engine.rb file.
In the .gemspec 5 file it would be like:
s.add_dependency "kaminari", "0.16.1"
In the engine.rb 4 file at the top add:
I think you also 3 need to add the gem to the rails engine 2 Gemfile and bundle install, but I'm not 1 certain if you need it there.
At the time being (Rails 3.1 and above I 13 think), you shouldn't have do declare any 12 gems in the test/dummy/Gemfile anymore:
Quote 11 from test/dummy/Gemfile (generated using 10
rails plugin new my_engine --full):
Declare your gem's dependencies in simple_view_helpers.gemspec. Bundler 9 will treat runtime dependencies like base 8 dependencies, and development dependencies 7 will be added by default to the :development 6 group.
Declare any dependencies that are 5 still in development here instead of in your 4 gemspec. These might include edge Rails 3 or gems from your path or Git. Remember 2 to move these dependencies to your gemspec 1 before releasing your gem to rubygems.org.
You really shouldn't need them on the Gemsec, and 3 they should be loaded. When you say "here 2 is the gemspec", you are surrounding it 1 with
Gem::Specification.new do |s| or something to that effect, right?
You can include all gems for the environment 2 with a simple bundler command:
You could 1 add this to an
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