48 lines
2.6 KiB
Ruby
48 lines
2.6 KiB
Ruby
#
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# Copyright (C) 2011 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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class AddMissingTooLongIndexes < ActiveRecord::Migration[4.2]
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tag :predeploy
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def self.add_index_with_check(table_name, column_name, options)
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return if index_exists?(table_name.to_s, column_name, :name => options[:name].to_s)
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add_index(table_name, column_name, options)
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end
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def self.up
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# some indexes failed to create with a logged warning because the auto-generated names were too long.
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# this fixes them up, and we added code in
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# config/initializers/active_record.rb to raise an exception, rather than
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# just log a warning, if another too-long index crops up in the future.
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#
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# we go through add_index_with_check, because we fixed the original
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# migrations and because some adapters don't enforce the same index length,
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# so they may have created some/all of these already.
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add_index_with_check :custom_fields, %w(scoper_type scoper_id target_type name), :name => "custom_field_lookup"
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add_index_with_check :learning_outcome_results, [:user_id, :content_tag_id, :associated_asset_id, :associated_asset_type], :name => "index_learning_outcome_results_association"
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add_index_with_check :context_external_tools, [:context_id, :context_type, :has_user_navigation], :name => "external_tools_user_navigation"
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add_index_with_check :context_external_tools, [:context_id, :context_type, :has_course_navigation], :name => "external_tools_course_navigation"
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add_index_with_check :context_external_tools, [:context_id, :context_type, :has_account_navigation], :name => "external_tools_account_navigation"
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add_index_with_check :context_external_tools, [:context_id, :context_type, :has_resource_selection], :name => "external_tools_resource_selection"
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add_index_with_check :context_external_tools, [:context_id, :context_type, :has_editor_button], :name => "external_tools_editor_button"
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end
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def self.down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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