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New posts in has-many-through

Rails3 nested has_many through question

After upgrading to Rails 4.1, new polymorphic associations are invalid when saving them along with their parent

Using fields from an association (has_many) model with formtastic in rails

HMT collection_singular_ids= deletion of join models is direct, no destroy callbacks are triggered

Destroy associations after the last has_many :through record is deleted

Rails has_many :through --> Should I keep a primary key column?

Has_Many :Through or :finder_sql

Ruby on Rails has_many through association objects before save

HasManyThrough with polymorphic and many-to-many relations

How can I create new records with has_many :through and honor :conditions?

has_many :through NameError: uninitialized constant

find_or_create on a has many through relationship

Activeadmin formtastic dynamic select

Rails has_many through aliasing with source and source_type for multiple types

Detecting changes in a rails has_many :through relationship

How do I force rails to not use a cached result for has_many through relations?

In rails, how to destroy a 'join table item' with out deleting the real record?

Rails has many and belongs to one

has_many :through uninitialized constant