Didn't have quite enough space to describe it there...basically i'm
having a problem with the :uniq option in my tags.
I'm using acts_as_taggable_on_steroid which adds these associations to
my Resource class:
Resource
has_many :taggings, :as => :taggable, :dependent => :destroy, :include
=> :tag
has_many :tags, :through => :taggings, :uniq => true
This uses the join model Tagging:
Tagging
belongs_to :tag
belongs_to :taggable, :polymorphic => true
And of course the Tag model:
Tag
has_many :taggings, :dependent => :destroy
has_many_polymorphs :taggables,
:from => [:resources, :lessons],
:through => :taggings,
:dependent => :destroy
The uniq option doesn't seem to stop me from adding the same tag
multiple times to a resource:
>> resource = Resource.first
=> #<TeachingObject id: 59, name: "Clarinet bite point close-up" ...>
>> tag = Tag.first
=> #<Tag id: 1, name: "recorder">
>> resource.tags
=> [#<Tag id: 1, name: "recorder">, #<Tag id: 610, name: "chunky
chicken">, #<Tag id: 1, name: "recorder">]
>> resource.tags << tag
=> [#<Tag id: 1, name: "recorder">, #<Tag id: 610, name: "chunky
chicken">, #<Tag id: 1, name: "recorder">, #<Tag id: 1, name:
"recorder">]
>> resource.tags << tag
=> [#<Tag id: 1, name: "recorder">, #<Tag id: 610, name: "chunky
chicken">, #<Tag id: 1, name: "recorder">, #<Tag id: 1, name:
"recorder">, #<Tag id: 1, name: "recorder">]
Now, i have other classes which use has_many :through with :uniq => true
and they seem fine: for example. resources also join to assets, through
a table called 'items':
Resource
has_many :items, :dependent => :destroy, :order => :position
has_many :assets, :through => :items, :order => :position, :uniq =>
true
Item
belongs_to :asset
belongs_to :resource
Asset
has_many :items, :dependent => :destroy, :order => :position
has_many :resources, :through => :items, :order => :position
Like i say, this behaves as i'd expect:
>> resource = Resource.first
=> #<TeachingObject id: 59, name: "Clarinet bite point close-up" ... >
>> asset = Asset.first
=> #<Asset id: 1, name: "07 Clari Clari (notation, perf AI)" ... >
>> resource.assets
=> []
>> resource.assets << asset
=> [#<Asset id: 1, name: "07 Clari Clari (notation, perf AI)" ... >]
>> resource.assets << asset
=> [#<Asset id: 1, name: "07 Clari Clari (notation, perf AI)" ... >]
See? It doesn't add the duplicate.
I'm wondering if it's to do with the polymorphic nature of the tag -
resource relationship - maybe the polymorphism is stopping it from
noticing that it's not uniq? or something?
Grateful for any help or ideas...i can't even think of a way to work
around this since the problem is buried inside active record's <<
method.
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