无法在Ruby on Rails上安装Active Admin：“Sprockets :: FileNotFound ......”

Question

I installed a new rails app locally, then added the active admin gem and ran rake db:migrate and then the installas per the instructions. I'm also using powder.

When trying to access the admin area at mysite.dev/admin, I get the following:

Sprockets::FileNotFound in Active_admin/devise/sessions#new

couldn't find file 'jquery-ui' (in /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activeadmin-0.6.0/app/assets/javascripts/active_admin/base.js:2)

What on earth am I doing wrong?

Answer 1

You should set in your gem file : gem 'jquery-rails', "2.3.0" to fix the jquery-rails gem version to 2.3.0 The last update ( 3.0.0) remove the jquery-ui files and cause that issue :

couldn't find file 'jquery-ui' (in /usr/local/rvm/gems/ruby-1.9.3-p392/gems/activeadmin-0.6.0/app/assets/javascripts/active_admin/base.js:2)

That should fix your issue for now. You can also get the last version of Active Admin from github that fixes your issue.

But I would advice to change

gem jquery-rails 

in your gemfile to :

gem 'jquery-rails', "2.3.0"

Hope that helps !

Answer 2

I've updated to last version (0.6.0) and I had the same problem.
Instead of downgrade my jquery-rails or install the gem directly from github, I change //= require active_admin/base in my in active_admin.js for:

//= require jquery
//= require jquery_ujs
//= require jquery.ui.core
//= require jquery.ui.widget
//= require jquery.ui.datepicker
//= require active_admin/application

Answer 3

When you run:

rails generate active_admin:assets

it generates:

/app/assets/javascripts/active_admin.js

That file contains only one line which is to pull in the base js file from the Gem:

//= require active_admin/base

active_admin/base (in the Gem) is only 4 lines, one of which is causing the problem:

//= require jquery
//= require jquery-ui
//= require jquery_ujs

//= require active_admin/application

The workaround I chose is to change the contents of your project's /app/assets/javascripts/active_admin.js:

//= require jquery
//= require jquery.ui.all
//= require jquery_ujs

//= require active_admin/application