In Mongoid, has_and_belongs_to_many means storing an array of IDs in the document.
So the usual flow of updating a model attribute with a key doesn't make too much sense. Instead we need to add/remove keys`
class Tag
has_many :profiles
end
class Profile
has_and_belongs_to :tags
end
tags = FactoryGirl.create_list(:tags, 2)
profile = Profile.create(tags: tags)
profile.as_document
#=>
{
"_id"=>BSON::ObjectId('593ab877aba9cf64dbd09582'),
"tag_ids"=>[
BSON::ObjectId('592da071aba9cf502513d424'),
BSON::ObjectId('592da081aba9cf502513d426')
]
}To begin with, there is a somewhat hardcoded list of has_many/belongs_to in the persistence class
https://github.com/jsonapi-suite/jsonapi_compliable/blob/master/lib/jsonapi_compliable/util/persistence.rb#L98
that should be moved to the adapter, so for mongoid I can override/implement it with a :habtm
Then for the persistence flow itself, I had to monkeypatch the update_foreign_key logic to support writing the list of habtm IDs
def update_foreign_key(parent_object, attrs, x)
...
elsif x[:sideload].type == :habtm
(attrs[x[:foreign_key]] ||= []) << parent_object.send(x[:primary_key]).to_s
...
In Mongoid,
has_and_belongs_to_manymeans storing an array of IDs in the document.So the usual flow of updating a model attribute with a key doesn't make too much sense. Instead we need to add/remove keys`
To begin with, there is a somewhat hardcoded list of
has_many/belongs_toin the persistence classhttps://github.com/jsonapi-suite/jsonapi_compliable/blob/master/lib/jsonapi_compliable/util/persistence.rb#L98
that should be moved to the adapter, so for mongoid I can override/implement it with a
:habtmThen for the persistence flow itself, I had to monkeypatch the update_foreign_key logic to support writing the list of habtm IDs