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New posts in activerecord
uninitialized constant ActiveRecord (NameError)
Dec 20, 2016
ruby
activerecord
Rails 4: undefined method `relation_delegate_class' for Model:Class
Nov 05, 2019
ruby-on-rails
ruby-on-rails-4
activerecord
model-view-controller
nomethoderror
Rails : uninitialized constant error on Active Record destroy
Mar 19, 2021
ruby-on-rails
activerecord
constants
How to use Rails 3 scope to filter on habtm join table where the associated records don't exist?
Dec 20, 2018
activerecord
ruby-on-rails-3
scope
join
where
How to update attachment in ActiveStorage (Rails 5.2)
Apr 02, 2022
ruby-on-rails
activerecord
ruby-on-rails-5
rails-activestorage
Find where associated records exist
Dec 20, 2021
ruby-on-rails
ruby
activerecord
how to validate associated model id?
Mar 23, 2022
ruby-on-rails
ruby
activerecord
How to best handle per-Model database connections with ActiveRecord?
Jan 12, 2018
ruby-on-rails
ruby
activerecord
Rails Dates Time and Fixtures
Oct 25, 2022
ruby-on-rails
activerecord
fixtures
Pros and cons of database triggers vs Rails ActiveRecord callbacks?
Mar 13, 2022
ruby-on-rails
activerecord
triggers
materialized-views
Eager loading associations on ActiveModel instances in Rails
May 09, 2017
ruby-on-rails
activerecord
lazy-loading
eager-loading
Understanding Rails ActiveRecord "single model" self joins
Oct 17, 2022
ruby-on-rails-3
activerecord
ActiveRecord SQL execution time
Feb 12, 2022
ruby-on-rails
activerecord
after_initialize & after_find callbacks order in Active Record object life cycle?
Nov 29, 2019
ruby-on-rails
activerecord
callback
Yii2 NOT IN condition not working
Jul 14, 2022
mysql
activerecord
yii2
yii2-active-records
Rails: storing encrypted data in database
Oct 31, 2022
ruby-on-rails
mongodb
encryption
activerecord
database
How to randomize array element positions of an `ActiveRecord::Relation`?
May 16, 2021
ruby-on-rails
ruby
ruby-on-rails-3
activerecord
random
Why is Yii2's ActiveRecord using lots of single SELECTs instead of JOINs?
Nov 15, 2022
php
mysql
activerecord
orm
yii2
Rails (ActiveRecord) many to many table
Feb 27, 2019
ruby-on-rails
ruby
activerecord
many-to-many
Rails joins or preload belongs_to association from polymorphic model
Sep 25, 2022
ruby-on-rails
activerecord
join
preload
polymorphism
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