Compatibility issue when using rails_admin_email gem - ruby-on-rails

I am using rails 4.2.1. I have already added rails_admin module in my app. Now, I want to add email facility for admin, so that he can send email to the users. For that, I have added rails_admin_email gem.
But when I execute bundle install command some dependency issues occur
Bundler could not find compatible versions for gem "rails":
In Gemfile:
rails (= 4.2.1)
rails_admin_email was resolved to 0.0.1, which depends on
rails (~> 3.2.6)
How can I solve the issue?
Please also provide some useful hint, if there is a better way than using rails_admin_email gem
Here are my current GemFile and Gemfile.lock .

While this answer should fix the problem i would not encourage you to use rails_admin_email as it has not been touched since July 2012 and not present on rubygems.org :). Still solution below.
The problem in this case is the dependencies defined
rails_admin_email for rails is s.add_dependency "rails", "~> 3.2.6"
rails_admin for rails is s.add_dependency 'rails', ['>= 4.0', '< 6']
To fix this problem you need to fork/pr rails_admin_gem to use >= 3.2.6. Here is what i tried in my fork and it works.

Related

ActiveAdmin with Rails 4: Bundler could not find compatible versions for gem "rails"

I am new to rails and building my first web application using version 4.2.4.
I am trying to install the activeadmin gem using
gem 'activeadmin', '~> 0.6.6'
However, when I run bundle install I get an error which says:
Bundler could not find compatible versions for gem "rails":
In snapshot (Gemfile.lock):
rails (= 4.2.4)
In Gemfile:
activeadmin (~> 0.6.6) ruby depends on
rails (< 4, >= 3.0.0) ruby
rails (= 4.2.4) ruby
Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.
Is this suggesting that I need to go down a version of rails in order to make this gem work or can I keep 4.2.4 and use the suggested bundle update method without causing any issues with my app and other gems?
The version of activeadmin that your Gemfile specifies does not support Rails 4. From the readme:
We're currently working on 1.0.0, which as far as dependencies, moves
us from meta_search to Ransack and adds Rails 4 & 5 support.
You can get it by tracking master:
gem 'activeadmin', github: 'activeadmin'
Or you can using rubygems:
gem 'activeadmin', '~> 1.0.0.pre2'
Change your Gemfile as shown, and then run bundle install

bcrypt-ruby - You don't have bcrypt-ruby installed in your application

I'm beginner in Ruby on Rails and trying to learn from http://ruby.railstutorial.org/ I'm creating sample_app and got stuck at chapter 6.
My Ruby version: ruby 2.0.0p195 (2013-05-14) [i386-mingw32]
My Rails version: Rails 4.0.0
I have following line in my GemFile:
gem 'bcrypt-ruby', '~> 3.0.0'
If I type gem list bcrypt-ruby , it shows bcrypt-ruby (3.0.1) . But if I try to create user, I get error saying
You don't have bcrypt-ruby installed in your application. Please add it to your Gemfile and run bundle install
I searched a lot on rails website, bcrypt website & even stackoverflow. But, nothing worked. Please help.
I've faced this issue recently (as have many others). As per ladyruby723 posted here, use gem 'bcrypt', git: 'https://github.com/codahale/bcrypt-ruby.git', :require => 'bcrypt' in your gemfile file.
I solved this the same problem by the following line:
gem 'bcrypt-ruby', '~> 3.1.2'
I believe this exact issue is solved in another question. There are actually two error messages produced, this being the higher level one, by searching for the lower level I found the below answer.
can't activate bcrypt-ruby (~> 3.0.0), already activated bcrypt-ruby-3.1.1. Make sure all dependencies are added to Gemfile
add below in gem file
gem 'bcrypt', git: 'https://github.com/codahale/bcrypt-ruby.git', :require => 'bcrypt'
and run bundle install and restart server
Finally... Got it working. I didn't understand the exact issue but I made two important changes. I'm not sure which change made it working.
I uninstalled my old ruby & rails that were installed from railsinstaller. Installed just ruby for my OS (64 bit which I was not able to choose while installing from railsinstaller). Then I installed rails, sqlite3 separately.
Another important change I did is in Gemfile.lock. I think this did the trick. I kept both of the following lines
bcrypt-ruby (3.0.0)
bcrypt-ruby (3.0.0-x86-mingw32)
In my case, the problem was that bcrypt version 3.1.2 was outdated. Fortunately Ruby has a way of installing the most up to date version of a particular gem right from your command line. In this case I typed in
bundle pristine bcrypt
but more generally you can do
bundle pristine gem name
If you think you might be running into a similar issue with a different gem

Conflict updating to Rails 3.1.10

I am currently running one of my Rails applications on version 3.1.3. My gemfile always listed:
gem 'rails', '3.1.3'
This worked just fine. In an effort to move to 3.1.10, I changed my Gemfile to the following:
gem 'rails', '~> 3.1.10'
Surprisingly, things break when I run bundle update rails after that change:
Bundler could not find compatible versions for gem "multi_json":
In Gemfile:
twitter (>= 0) ruby depends on
multi_json (~> 1.3) ruby
fnordmetric (>= 0) ruby depends on
multi_json (1.2.0)
Just as a test, I tried changing the gem version to '>= 3.1.0' and that installed without any quims, albeit it went to 3.2, which I'm not ready for just yet on this particular application.
Any suggestions for getting this thing running on 3.1.10 which was released today to address a security vulnerability?
Also an update:
I am having absolutely no trouble stashing Gemfile.lock away and starting from Rails 3.1.4. As soon as I try to go to 3.1.5+, this is where all the trouble begins.
Make the change in your Gemfile to
gem 'rails', '3.1.10'
Then try running
bundle update
instead of
bundle install
I can't see your Gemfile but this should will allow the bundler to try and find compatible Gem matches. If you have hard code a Gem revision you might have to relax it and repeat the update. Good luck!
Looking at the gems, it appears that oauth2 lists "multi_json ~> 1.0" and ActiveSupport 3.1.10 lists "multi_json < 1.3, >= 1.0" as the dependencies, so that should resolve. I've run into strangeness like this and fixed it by running
gem uninstall <relevant gems>
then running bundle install again. So maybe try
gem uninstall oauth2 multi_json activesupport
then bundle install
Edit
gem uninstall twitter multi_json fnordmetric

could not find gem spree-stock-manager, source does not contain any versions

I've been searching for a solution to this problem but been unable to find it.
I'm trying to add spree-stock-manager to my vanilla spree test store (1.2.0).
When I run 'bundle install' i get
Could not find gem 'spree-stock-manager (>= 0) ruby' in git://github.com/olivierbuffon/spree-stock-manager.git (at master). Source does not contain any versions of 'spree-stock-manager (>= 0) ruby'
I tried downloading and installing it as a local gem into vendor/gems and also added a specific version to my Gemfile (suggestion from Stackoverflow). Same result only said (= 1.1.0) instead of (>= 0).
I looked into the .gemspec for spree_stock_manager and it said
s.add_dependency 'spree_core', '~> 1.1.0'
so that should include spree_core 1.2.0, right?
Other info:
Mac OSX, rvm, rails 3.2.9
Anyone knows why this happens?
Thanks in advance!
s.add_dependency 'spree_core', '~> 1.1.0'
This indicates that it requires any version of spree_core from 1.1.0 up to, but NOT including 1.2.0.
I would be weary of using this gem for a couple reasons. First, there are no tests associated with it, which tells me the author doesn't care enough about the code to take the time to document the expected behavior. It also won't be easy for others to contribute bug fixes or enhancements without tests. Second, the gem isn't registered at rubygems.org. While not required, this is the standard gem repo and tells me that the author had no intention of actually releasing it publicly.

Rails_admin gemfile, bundle install, rails version question

While trying to install Rails admin, I added it to my gem file as instructed. I deleted the gemfile.lock
Then I ran bundle install. I got this message:
Bundler could not find compatible versions for gem "rails":
In Gemfile:
rails_admin depends on
rails (~> 3.0.3)
rails (3.0.1)
I am using rails 3.0.1, not really sure I understand the issue? But its obviously stopping me from installing.
Also, if I put rails_admin in the gem file like so:
gem 'rails_admin'
instead of:
gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'
that seems to install it a version 0.0.0 and then doesn't proceed to do anything (so clearly thats not right either).
Is there a version I can specify that might work?
Thanks!
The issue is that the gem now required rails 3.0.3 and you are using 3.0.1
~> means at least this tiny revision or greater.
E.G. ~> 3.0.3 means 3.0.x where x >= 3
As for what gem version will work on 3.0.1 I do not know.

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