Arel cheatsheet
users.where(users[:name].eq('amy')) # SELECT * FROM users WHERE users.name = 'amy' basic join In ActiveRecord (without Arel), if :photos is the name of the association, use joins users.joins(:photos) In Arel, if photos is defined as the Arel table, photos = Photo.arel_table users.join(photos) users.join(photos, Arel::Nodes::OuterJoin).on(users[:id].eq(photos[:user_id])) join with conditions users.
Devhints — TL;DR for developer documentation
Rico's cheatsheets Hey! I'm @rstacruz and this is a modest collection of cheatsheets I've written. bash Bash scripting enzyme Enzyme es6 ES2015+ go Go react React.js sass Sass vim Vim xpath Xpath Recently updated jsdoc Jsdoc packs Packs (ruby) polyfill.io Polyfill.io tmux tmux docker-compose docker-compose cron Cron yum YUM screen Screen clip Command Line Interface Pages tig Tig tar tar atom Atom
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