102 lines
2.5 KiB
Ruby
102 lines
2.5 KiB
Ruby
module MigrationsHelpers
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def table(name)
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Class.new(ActiveRecord::Base) do
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self.table_name = name
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self.inheritance_column = :_type_disabled
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end
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end
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def migrations_paths
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ActiveRecord::Migrator.migrations_paths
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end
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def table_exists?(name)
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ActiveRecord::Base.connection.table_exists?(name)
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end
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def migrations
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ActiveRecord::Migrator.migrations(migrations_paths)
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end
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def clear_schema_cache!
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ActiveRecord::Base.connection_pool.connections.each do |conn|
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conn.schema_cache.clear!
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end
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end
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def foreign_key_exists?(source, target = nil, column: nil)
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ActiveRecord::Base.connection.foreign_keys(source).any? do |key|
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if column
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key.options[:column].to_s == column.to_s
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else
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key.to_table.to_s == target.to_s
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end
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end
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end
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def reset_column_in_all_models
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clear_schema_cache!
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# Reset column information for the most offending classes **after** we
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# migrated the schema up, otherwise, column information could be
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# outdated. We have a separate method for this so we can override it in EE.
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ActiveRecord::Base.descendants.each(&method(:reset_column_information))
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# Without that, we get errors because of missing attributes, e.g.
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# super: no superclass method `elasticsearch_indexing' for #<ApplicationSetting:0x00007f85628508d8>
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ApplicationSetting.define_attribute_methods
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end
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def reset_column_information(klass)
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klass.reset_column_information
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end
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def previous_migration
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migrations.each_cons(2) do |previous, migration|
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break previous if migration.name == described_class.name
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end
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end
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def migration_schema_version
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metadata_schema = self.class.metadata[:schema]
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if metadata_schema == :latest
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migrations.last.version
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else
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metadata_schema || previous_migration.version
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end
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end
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def schema_migrate_down!
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disable_migrations_output do
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ActiveRecord::Migrator.migrate(migrations_paths,
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migration_schema_version)
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end
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reset_column_in_all_models
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end
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def schema_migrate_up!
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reset_column_in_all_models
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disable_migrations_output do
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ActiveRecord::Migrator.migrate(migrations_paths)
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end
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reset_column_in_all_models
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end
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def disable_migrations_output
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ActiveRecord::Migration.verbose = false
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yield
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ensure
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ActiveRecord::Migration.verbose = true
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end
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def migrate!
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ActiveRecord::Migrator.up(migrations_paths) do |migration|
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migration.name == described_class.name
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end
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end
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end
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