composite primary key - Rails 4.1

11155 · May 15, 2014, 1:11am

Hi,

I am facing issue with composite primary key

In my gem file I have the below entries -

gem 'rails', '>= 4.1.0.rc2' gem 'mysql2' gem 'rb-readline', "~> 0.5.1" gem 'sdoc', '~> 0.4.0', group: :doc gem 'spring', group: :development gem 'bcrypt', '~> 3.1.7' gem 'composite_primary_keys', { :git => 'git://github.com/composite-primary-keys/composite_primary_keys.git', :branch => 'ar_4.1.x' }

When I tried running rails server, I get the below error

Exiting /home/samanth/.bundler/ruby/2.1.0/composite_primary_keys-82db7315760f/lib/composite_primary_keys/connection_adapters/abstract/connection_specification_changes.rb:10:in `establish_connection': uninitialized constant ActiveRecord::Base::DEFAULT_ENV (NameError) from /home/samanth/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/activerecord-4.1.0.rc2/lib/active_record/railtie.rb:129:in `block (2 levels) in <class:Railtie>'

Can you please advise how this issue can be fixed?

Andreas_Wenk · May 15, 2014, 9:04am

Hi,

I am facing issue with composite primary key

In my gem file I have the below entries -

gem ‘rails’, ‘>= 4.1.0.rc2’

gem ‘mysql2’

gem ‘rb-readline’, “~> 0.5.1”

gem ‘sdoc’, ‘~> 0.4.0’, group: :doc

gem ‘spring’, group: :development

gem ‘bcrypt’, ‘~> 3.1.7’

gem ‘composite_primary_keys’, {
 :git =>
‘git://github.com/composite-primary-keys/composite_primary_keys.git’,
:branch => 'ar_4.1.x'
}

When I tried running rails server, I get the below error

Exiting

/home/samanth/.bundler/ruby/2.1.0/composite_primary_keys-82db7315760f/lib/composite_primary_keys/connection_adapters/abstract/connection_specification_changes.rb:10:in

`establish_connection’: uninitialized constant

ActiveRecord::Base::DEFAULT_ENV (NameError)

from

/home/samanth/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/activerecord-4.1.0.rc2/lib/active_record/railtie.rb:129:in

`block (2 levels) in class:Railtie’

Can you please advise how this issue can be fixed?

– Posted via http://www.ruby-forum.com/.

The error is this:

ActiveRecord::Base::DEFAULT_ENV (NameError)

How does your config/database.yml look like?

Matt_Jones · May 15, 2014, 2:04pm

I think this is an issue with the CPK gem, not Rails. My first suspicion is that the file that defines DEFAULT_ENV isn’t being required:

https://github.com/rails/rails/blob/v4.1.0.rc2/activerecord/lib/active_record/connection_handling.rb

Note the bunch of files that are required in the CPK main file:

https://github.com/composite-primary-keys/composite_primary_keys/blob/ar_4.1.x/lib/composite_primary_keys.rb

connection_handling isn’t on that list…

–Matt Jones

11155 · May 15, 2014, 2:26pm

Matt Jones wrote in post #1146177:

gem 'sdoc', '~> 0.4.0', group: :doc

Can you please advise how this issue can be fixed?

I think this is an issue with the CPK gem, not Rails. My first suspicion is that the file that defines DEFAULT_ENV isn't being required:

github.com

rails/rails/blob/v4.1.0.rc2/activerecord/lib/active_record/connection_handling.rb

module ActiveRecord
  module ConnectionHandling
    RAILS_ENV   = -> { Rails.env if defined?(Rails) }
    DEFAULT_ENV = -> { RAILS_ENV.call || "default_env" }

    # Establishes the connection to the database. Accepts a hash as input where
    # the <tt>:adapter</tt> key must be specified with the name of a database adapter (in lower-case)
    # example for regular databases (MySQL, Postgresql, etc):
    #
    #   ActiveRecord::Base.establish_connection(
    #     adapter:  "mysql",
    #     host:     "localhost",
    #     username: "myuser",
    #     password: "mypass",
    #     database: "somedatabase"
    #   )
    #
    # Example for SQLite database:
    #
    #   ActiveRecord::Base.establish_connection(

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Note the bunch of files that *are* required in the CPK main file:

github.com

composite-primary-keys/composite_primary_keys/blob/ar_4.1.x/lib/composite_primary_keys.rb

#--
# Copyright (c) 2006-2012 Nic Williams and Charlie Savage
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

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connection_handling isn't on that list...

--Matt Jones

Can you please suggest if any work around to get past this error ?

11155 · May 15, 2014, 2:38pm

Andreas Wenk wrote in post #1146145:

The error is this:

ActiveRecord::Base::DEFAULT_ENV (NameError)

How does your config/database.yml look like?

The same config/database.yml was working just fine until I installed CPK gem.

Please find below link where I asked for solution for the same issue.