Re: [Rails] LoadError: Could not load 'active_record/connection_adapters/mysql2_adapter'

Ruby on Rails Monday, June 26, 2017

i did change from mysql to mariadb (debian 7 upgrade to 8).

just did this too:

gem install mysql2 -- --with-mysql-config=/usr/bin/mariadb_config

but no go....

db.yml

# MySQL. Versions 5.0+ are recommended.

# Install the MYSQL driver

# gem install mysql2

# Ensure the MySQL gem is defined in your Gemfile

# gem 'mysql2'

# And be sure to use new-style password hashing:

# http://dev.mysql.com/doc/refman/5.0/en/old-client.html

default: &default

adapter: mysql2

encoding: utf8

pool: 5

username: wahwah

password: wahwah

socket: /var/run/mysqld/mysqld.sock

development:

<<: *default

database: myapp_dev

# Warning: The database defined as "test" will be erased and

# re-generated from your development database when you run "rake".

# Do not set this db to the same as development or production.

test:

<<: *default

database: myapp_test

staging:

<<: *default

database: myapp_staging

host: localhost

username: wahwah

password: wahwah

production:

<<: *default

host: localhost

database: myapp_production

username: wahwah

password: wahwah

=====================

gem file:

source 'https://rubygems.org'

gem 'rails', '4.2.0'

gem 'sass-rails' #, '~> 4.0.3'

gem 'uglifier', '>= 1.3.0'

gem 'mini_magick'

gem 'bundler'

gem 'will_paginate', '~> 3.1.0'

gem 'will_paginate-bootstrap'

gem 'sinatra', require: false

gem 'slim'

gem 'exception_notification' #https://github.com/smartinez87/exception_notification

gem 'jquery-rails'

gem 'meta-tags'

gem 'ransack', github: 'activerecord-hackery/ransack'

gem 'omniauth'

gem 'omniauth-twitter'

gem 'omniauth-facebook'

gem 'omniauth-linkedin'

gem "jquery-ui-rails"

gem 'execjs'

gem 'therubyracer'

gem 'mysql2'# , '~> 0.3.18'

gem 'sidekiq'

gem 'social-share-button'

gem 'simple_form'

gem 'mechanize'

gem "actionpack-page_caching"

gem 'rails-observers'

gem 'nokogiri'

gem 'ckeditor'

gem 'rails-gallery'

gem 'thredded', '~> 0.9.2'

gem 'anemone'

gem 'lol_dba'

gem 'bullet', group: 'development'

gem 'actionpack-action_caching'

#gem 'classifieds', path: 'engines/classifieds'

#gem 'thredded', '~> 0.9.2'

#gem 'country_state_select' , '3.0.0'

#gem 'yui-compressor', '~> 0.12.0'

#gem 'pry'

#gem 'exception_handler' #, '~> 0.5.0' #-> Gemfile

gem "koala", "~> 2.2"

gem 'whenever', require: false

gem 'bootstrap3_autocomplete_input'

gem 'bootstrap-sass', '~> 3.2.0'

gem 'autoprefixer-rails'

gem 'font-awesome-rails'

gem 'figaro'

gem 'sitemap_generator'

gem 'momentjs-rails', '>= 2.9.0'

gem 'bootstrap3-datetimepicker-rails', '~> 4.17.37'

gem 'paper_trail'

gem "braintree"

gem 'gon'

gem 'auto_html','~>1.6.4'

#gem 'capistrano' #, '~> 3.4.0'

gem 'capistrano-bundler' #, '~> 1.1.2'

gem 'capistrano-rvm'

gem 'capistrano-passenger'

#gem 'rvm1-capistrano3', require: false

gem 'capistrano-sidekiq' #, group: :development

gem "passenger"

#gem 'twitter-bootstrap-rails', :git => 'https://github.com/seyhunak/twitter-bootstrap-rails.git', :branch => 'master'

#gem 'simple_token_authentication'

gem 'twitter'

gem 'plivo'

gem 'acts-as-taggable-on'

gem 'groupdate'

gem "chartkick"

gem 'friendly_id', '~> 5.1.0' # Note: You MUST use 5.0.0 or greater for Rails 4.0+

gem 'devise'

gem 'devise_invitable'

gem 'carrierwave'

gem 'public_activity'

gem 'bootstrap-will_paginate'

gem 'acts_as_votable', '~> 0.10.0'

gem 'acts_as_commentable'

gem 'acts_as_follower'

gem 'counter_culture', '~> 0.1.33'

gem "mailboxer"

gem 'faker'

gem 'populator'

gem 'awesome_nested_set'

#gem 'country_state_select' # , '3.0.2'

gem 'city-state'

gem 'chosen-rails'

gem 'spring'

gem 'better_errors'

gem 'letter_opener'

gem 'guard'

gem 'guard-rspec', '~> 4.2.8'

#gem 'rails_12factor'

#gem 'sprockets'

group :development do

gem 'capistrano-rails' #, '~> 1.1.0'

gem 'capistrano-ssh-doctor', '~> 1.0'

end

gem 'devise-encryptable'

#gem 'devise-async' #send email

On Mon, Jun 26, 2017 at 11:23 AM, Colin Law <clanlaw@gmail.com> wrote:

On 26 June 2017 at 15:56, tom <tomabroad@gmail.com> wrote:
> HI, im getting the error below during a cap deploy. i can run production
> console successfully on the server.
> any ideas?
> thx
> ...
> DEBUG [24759d1b] rake aborted!
> DEBUG [24759d1b] LoadError: Could not load
> 'active_record/connection_adapters/mysql2_adapter'. Make sure that the
> adapter in config/database.yml is valid. If you use an adapter other than '
> mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to
> the Gemfile.

Have you tried running assets:precompile locally, in production environment?

What have you got in database.yml? Also post Gemfile please.

Colin

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Re: [Rails] LoadError: Could not load 'active_record/connection_adapters/mysql2_adapter'

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