rails-cheat-sheet.md

Rails

schema:load versus migrate

db:schema:load sets up database from schema.rb file deleting all data
db:migrate sets up database structure from db/migrations sustaining all data

Search only user defined methods of object

exception.methods - Object.methods

disable active-record validation

image_asset_link.save(validate: false)

View entire Pry-history

cat ~/.pry-history

make url_helpers accessible in rails console

include Rails.application.routes.url_helpers
users_path #=> '/users/

Eager Loading (Preloading)

# fetch Producttests and preload associated model Participants on the fly  
pt = Bl::Producttest.preload(:participants)

# check that Participants go loaded
pt.first.association_cache.keys # => [:participants, :participation_requests]