Since rails 5, the whole of the application is loaded (including all initializers and models) when a rake task is to be executed. In case no database exists, e.g. when issuing a db:create, this runs into errors in case calls to ActiveRecord methods require the existence of a database. Using the null-db gem, we can mimick the existence of a db in such cases. Rails seems to reset the database connection to the one defined in the config/database.yml by itself.pull/7114/head
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#-- encoding: UTF-8 |
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|
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#-- copyright |
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# OpenProject is a project management system. |
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# Copyright (C) 2012-2018 the OpenProject Foundation (OPF) |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU General Public License version 3. |
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# |
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows: |
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# Copyright (C) 2006-2017 Jean-Philippe Lang |
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# Copyright (C) 2010-2013 the ChiliProject Team |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU General Public License |
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# as published by the Free Software Foundation; either version 2 |
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# of the License, or (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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# |
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# See docs/COPYRIGHT.rdoc for more details. |
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#++ |
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|
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# Since Rails 5, rake commands like db:create load the whole application. |
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# As initializers and other parts of the boot sequence rely on calls accessing |
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# the DB, the null db gem is used to fake the existence of a database in cases where |
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# the db has not been created yet. |
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|
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OpenProject::NullDbFallback.fallback |
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#-- encoding: UTF-8 |
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|
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#-- copyright |
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# OpenProject is a project management system. |
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# Copyright (C) 2012-2018 the OpenProject Foundation (OPF) |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU General Public License version 3. |
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# |
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows: |
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# Copyright (C) 2006-2017 Jean-Philippe Lang |
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# Copyright (C) 2010-2013 the ChiliProject Team |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU General Public License |
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# as published by the Free Software Foundation; either version 2 |
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# of the License, or (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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# |
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# See docs/COPYRIGHT.rdoc for more details. |
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#++ |
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|
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module OpenProject |
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module NullDbFallback |
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class << self |
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def fallback |
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ActiveRecord::Base.connection |
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rescue ActiveRecord::NoDatabaseError |
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applied! |
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ActiveRecord::Base.establish_connection adapter: :nulldb |
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end |
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|
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def reset |
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return unless applied? |
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ActiveRecord::Base.establish_connection(database_config) |
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end |
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private |
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attr_accessor :applied |
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def applied! |
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self.applied = true |
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end |
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|
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def unapplied! |
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self.applied = false |
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end |
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|
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def applied? |
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!!applied |
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end |
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|
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def database_config |
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YAML.load_file(File.join(Rails.root, "config", "database.yml"))[Rails.env] |
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end |
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end |
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end |
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end |
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