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Blank value can't be saved if chosen in select field. (Gem Ancestry)...

undefined method `child_ids' for nil:NilClass,Rails...

Rails, ancestry gem, populating dropdown with two depth level...

undefined method `child_ancestry' using ancestry gem...

nested_messages not showing previous messages...

Ancestry gem says "undefined method `ancestry' for..."...

How to do a filter and then find Ancestry descendants?...

Recursive partial local variables are not working...

Rails: Trouble With Model Association Using Ancestry Gem (Tree Structur Model)...

Rails validate uniqueness on level...

FactoryGirl + Ancestry with two level deep...

Ember.js model to be organised as a tree structure...

Display Ancestry name instead of id...

Ancestry Gem saves all threaded messages as Parent...

How can I find the ultimate ancestor of an ActiveRecord entry where parent_id is optional?...

Order sub-tree navigation using ancestry gem...

Ancestry gem with an has_many association...

Unicorn has undefined method error ONLY in production...

Implementing ancestry on a nested resource throwing an error...

Testing attribute methods with RSpec Rails...

Using different template on the show page using ancestry gem...

Arranging Ancestry siblings by name and integer...

Dynamic javascript dropdown list with Rails and Ancestry...

modify friendly_id gem...

Rails ancestry: Get children records of ancestry model...

Using NestedSortable with Ancestry gem and Mongoid...

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Ancestry gem "flattened tree"...