53 lines
1.3 KiB
Ruby
53 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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# Temporarily disable the named constraint on the table within the block.
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#
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# without_constraint('members', 'check_1234') do
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# create_invalid_data
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# end
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module Database
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module WithoutCheckConstraint
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def without_check_constraint(table, name, connection:)
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saved_constraint = constraint(table, name, connection)
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constraint_error!(table, name, connection) if saved_constraint.nil?
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begin
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connection.remove_check_constraint(table, name: name)
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connection.transaction do
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yield
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raise ActiveRecord::Rollback
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end
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ensure
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restore_constraint(saved_constraint, connection)
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end
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end
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private
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def constraint_error!(table, name, connection)
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msg = if connection.table_exists?(table)
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"'#{table}' table does not contain constraint called '#{name}'"
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else
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"'#{table}' does not exist"
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end
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raise msg
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end
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def constraint(table, name, connection)
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connection
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.check_constraints(table)
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.find { |constraint| constraint.options[:name] == name }
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end
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def restore_constraint(constraint, connection)
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connection.add_check_constraint(
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constraint.table_name,
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constraint.expression,
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**constraint.options
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)
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end
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end
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end
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