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