Last active
April 23, 2026 21:58
-
-
Save tokland/1333253 to your computer and use it in GitHub Desktop.
Simple wrapper over arel
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| require 'active_record' | |
| require 'arel' | |
| # Ruby-like syntax in AR conditions using the underlying Arel layer (Rails >= 3.0). | |
| # | |
| # What you would usually write like this: | |
| # | |
| # User.where(["users.created_at > ? AND users.name LIKE ?", Date.yesterday, "Mary"]) | |
| # | |
| # can now be written like this (note those parentheses required by the operators precedences): | |
| # | |
| # User.where((User[:created_at] > Date.yesterday) & (User[:name] =~ "Mary")) | |
| # | |
| module ArelExtensions | |
| module ActiveRecord | |
| module ClassMethods | |
| delegate :[], :to => :arel_table | |
| end | |
| end | |
| module Nodes | |
| def self.included(base) | |
| base.class_eval do | |
| alias_method :&, :and | |
| alias_method :|, :or | |
| end | |
| end | |
| end | |
| module Predications | |
| def self.included(base) | |
| base.class_eval do | |
| alias_method :<, :lt | |
| alias_method :<=, :lteq | |
| alias_method :==, :eq | |
| alias_method :>=, :gteq | |
| alias_method :>, :gt | |
| alias_method :=~, :matches | |
| alias_method :^, :not_eq | |
| alias_method :>>, :in | |
| alias_method :<<, :not_in | |
| end | |
| end | |
| end | |
| end | |
| ActiveRecord::Base.extend(ArelExtensions::ActiveRecord::ClassMethods) | |
| Arel::Nodes::Node.send(:include, ArelExtensions::Nodes) | |
| Arel::Predications.send(:include, ArelExtensions::Predications) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
In the middle of upgrading our Rails4 app to Rails8, discovered this snip of code was breaking the regular ActiveRecord .order method.