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New posts in activerecord

RoR: has_one "or the other"? (Or, polymorphism without the inheritance.)

ruby-on-rails activerecord polymorphism polymorphic-associations has-one

get all products of category and child categories (rails, awesome_nested_set)

ruby-on-rails ruby ruby-on-rails-3 activerecord nested-sets

Ruby on Rails+PostgreSQL: usage of custom sequences

ruby-on-rails postgresql activerecord save rails-postgresql

ActiveRecord - select first record from each group

sql ruby-on-rails-3 postgresql activerecord

Use PostgreSQL JSON column type with Rails 3

ruby-on-rails json postgresql activerecord

How convert a string into a ActiveSupport::TimeWithZone?

ruby-on-rails activerecord date

What is NHibernate session exactly?

nhibernate session activerecord castle-activerecord castle

performant ordering of keys in a MySQL compound index (WRT Rails Polymorphic associations and STI)

mysql ruby-on-rails activerecord indexing sti

Are there any ETL tools that integrate with Rails models?

ruby-on-rails activerecord model etl data-integration

Stack level too deep in activesupport callbacks

ruby-on-rails ruby activerecord stack-trace activesupport

Codeigniter deleting data with joins tables

codeigniter join activerecord sql-delete

How to use JOIN in Yii2 Active Record for relational model?

php mysql activerecord yii2

Rails - Active Record Join across 3 Tables

ruby-on-rails ruby ruby-on-rails-3 activerecord rails-activerecord

ActiveRecord joins condition satisfy all relations

mysql ruby-on-rails ruby activerecord rails-activerecord

PG::InvalidColumnReference: ERROR: for SELECT DISTINCT, ORDER BY expressions must appear in select list

ruby-on-rails postgresql activerecord arel

Rails: eager-loading on an already-left-joined table?

ruby-on-rails ruby-on-rails-4 activerecord rails-activerecord

How does this deprecate method work?

ruby-on-rails ruby activerecord metaprogramming

Throw an exception whenever someone tries to mass-assign protected attributes

ruby-on-rails activerecord attributes ruby-on-rails-2

Multiple database tables within one AR model in Rails 3

ruby-on-rails-3 activerecord

using multiple scope params in Rails3

ruby-on-rails ruby-on-rails-3 activerecord scope rails-activerecord
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