I'm new to rails and was trying with rvm
rvm use 2.4.1
rails _4.2.11.1_ new hello_app
cd hello_app
rails s
which works with Rails 5 but fails with rails 4 and ruby 2.4.1 on my Mac
Gem::LoadError (Specified 'sqlite3' for database adapter, but the gem is not loaded. Add `gem 'sqlite3'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord).):
activerecord (4.2.11.1) lib/active_record/connection_adapters/connection_specification.rb:177:in `rescue in spec'
My Gemfile which is what rails new generated without comments
source 'https://rubygems.org'
gem 'rails', '4.2.11.1'
gem 'sqlite3'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
runtimes
gem 'jquery-rails'
more: https://github.com/rails/turbolinks
gem 'turbolinks'
https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0', group: :doc
group :development, :test do
gem 'byebug'
end
group :development do
gem 'web-console', '~> 2.0'
gem 'spring'
end
It is just because rails can't find exact version of gem needed, please provide version explicitly as below,
gem 'sqlite3', '~> 1.3.6'
You can find reference here
If it does not work, vary version and try as gem 'sqlite3', '~> 1.3.0' in gemfile.
Related
Below is my Gemfile but i haven't specified the mysql2 version but for some reason it's looking for 0.4.4. It must be a dependency of another gem. I was just assigned thAny ideas?
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.6'
# Use sqlite3 as the database for Active Record
gem 'mysql2', group: :production
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
gem 'active_model_serializers', '~> 0.10.0.rc5'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'acts_as_better_tree'
gem 'rest-client', '~> 1.8'
gem 'apipie-rails', :github => 'Apipie/apipie-rails'
gem 'devise'
gem 'petergate'
gem 'pry-rails'
gem 'annotate'
gem 'slim-rails'
gem 'bootstrap-sass'
gem 'font-awesome-sass'
gem 'carrierwave'
gem 'carrierwave-base64'
gem 'carrierwave-aws'
gem 'authorizenet'
gem 'figaro'
gem 'roo', '~> 2.3.2'
gem 'roo-xls', '~> 1.0'
gem 'mini_magick', '~> 4.5'
gem 'html5shiv-rails'
gem 'cocoon'
gem 'will_paginate'
gem 'wicked_pdf'
gem 'wkhtmltopdf_binary'
gem "minitest-rails"
gem "minitest-reporters"
gem 'airbrake', '~> 5.6'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
group :development do
# Access an IRB console on exception pages or by using <%= console %> in views
gem 'web-console', '~> 2.0'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'capistrano'
gem 'capistrano-passenger'
gem 'capistrano-bundler'
gem 'capistrano-rails'
gem 'capistrano-rails-console'
gem 'capistrano-rvm'
gem 'better_errors'
gem 'pry'
end
group :development, :test do
gem 'sqlite3'
gem 'byebug'
end
$ gem dependency mysql2 --reverse-dependencies
It'll list each version of mysql2 and then the gems that depend on that version.
I believe the problem is with the rails version and mysql2 version. Change the Gemfile line that contains gem 'mysql2' to gem 'mysql2', '~> 0.4.0'
I have gem 'rails', '4.2.6' installed but apparently there is some compile error with mysql2 and that version of rails.
"For Rails 4.x please pin the gem to mysql2 '~> 0.4.0'" - sodabrew
After doing this the bundle install ran and I was able to run rails c without errors.
I have trouble setting up my gems correctly while working with Heroku. Can someone tell me what it should look like? Here's what it looks like currently:
source 'https://rubygems.org'
gem 'sinatra', '1.0'
gem 'rails', '4.2.6'
gem 'sqlite3'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0', group: :doc
group :development, :test do
gem 'byebug'
end
group :development do
gem 'web-console', '~> 2.0'
gem 'spring'
end
Help is much appreciated, thanks.
Heroku doesn't support running rails apps using sqlite3 so you should remove that and use pg instead.
Or you could set that for your development env only and set pg for production.
But it's always recommended to run your local env as similar as possible to your production, so that you won't get any surprises when you go live.
I am trying to install the spree store into my rails app, and when I enter spree install in the terminal, I receive the following error:
home/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/specification.rb:2158:in method_missing': undefined method this' for #<Gem::Specification:0x5c7150 activesupport-4.2.5.1> (NoMethodError)
My gemfile looks like this:
source 'https://rubygems.org'
gem 'rails', '4.2.5.1'
gem 'pg', '~> 0.15'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0', group: :doc
group :development, :test do
debugger console
gem 'byebug'
end
group :development do
views
gem 'web-console', '~> 2.0'
gem 'spring'
end
Can somebody point me in the right direction?
I face similar problem recently after running bundle update
Try to downgrade a gemset to 2.5.0 as follows:
gem update --system 2.5.0
It seems like there is a bug in 2.5.1 version.
When I try to run bundle install in terminal. I receive this error message.
Gemfile syntax error on line 36: syntax error, unexpected tIDENTIFIER, expecting
keyword_end
The code in my gem file is below. I am trying to install rspec, it works perfectly fine without the last 9 lines. So the problem lies somewhere in that section, yet I'm not able to figure it out. Any guidance would be much appreciated!
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring', group: :development
source 'http://rubygems.org'
gem 'rails', '3.0.0'
gem 'sqlite3-ruby', '1.2.5', :require => 'sqlite3'
group :development do
gem 'rspec-rails', '2.0.0'
end
group :test do
gem 'rspec', '2.0.0' gem 'webrat', '0.7.1'
end
on line 36 you have this:
group :test do
gem 'rspec', '2.0.0' gem 'webrat', '0.7.1'
end
but you should have this (you need a new line)
group :test do
gem 'rspec', '2.0.0'
gem 'webrat', '0.7.1'
end
each gem has to be on its own line
I keep getting a
Specified 'sqlite3' for database adapter, but the gem is not loaded. Add `gem 'sqlite3'` to your Gemfile.
Here's my Gemfile:
source 'https://rubygems.org'
ruby '2.0.0'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.0'
gem 'thin'
# gem 'sqlite3'
gem 'mongoid', git: 'https://github.com/mongoid/mongoid.git'
gem 'sass-rails', '~> 4.0.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 1.2'
group :doc do
gem 'sdoc', require: false
end
Where else do you specify an adapter? As you can see sqlite3 is excluded from the gemfile. Server restart didn't seem to do the trick.
Please check your database.yml file . you might have specified the adapter as sqlite.