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rails--rails/activerecord/lib/arel.rb
2020-03-13 16:26:49 -04:00

54 lines
1.3 KiB
Ruby

# frozen_string_literal: true
require "arel/errors"
require "arel/crud"
require "arel/factory_methods"
require "arel/expressions"
require "arel/predications"
require "arel/window_predications"
require "arel/math"
require "arel/alias_predication"
require "arel/order_predications"
require "arel/table"
require "arel/attributes/attribute"
require "arel/visitors"
require "arel/collectors/sql_string"
require "arel/tree_manager"
require "arel/insert_manager"
require "arel/select_manager"
require "arel/update_manager"
require "arel/delete_manager"
require "arel/nodes"
module Arel
VERSION = "10.0.0"
# Wrap a known-safe SQL string for passing to query methods, e.g.
#
# Post.order(Arel.sql("length(title)")).last
#
# Great caution should be taken to avoid SQL injection vulnerabilities.
# This method should not be used with unsafe values such as request
# parameters or model attributes.
def self.sql(raw_sql)
Arel::Nodes::SqlLiteral.new raw_sql
end
def self.star # :nodoc:
sql "*"
end
def self.arel_node?(value) # :nodoc:
value.is_a?(Arel::Nodes::Node) || value.is_a?(Arel::Attribute) || value.is_a?(Arel::Nodes::SqlLiteral)
end
def self.fetch_attribute(value, &block) # :nodoc:
unless String === value
value.fetch_attribute(&block)
end
end
end