Rails 4.2.2-如何使用祖先宝石？

Question

In rails 4.2.2, I am using jstree and ancestry gems for folder and files structure. How can I use ancestry methods in our model? Please give some examples with full model structure. I have already tried it by referring this https://github.com/stefankroes/ancestry , but I don't know whether generated result is correct or not.

Please help me to create ancestry model structure and how can I use it for jstree.

Answer 1

if you haven't used it before, I'd suggest just building a tree in rails console like have a Header class that has name (and obviously ancestry ) and do (off the top of my head):

class Header < ActiveRecord::Base
  has_ancestry
end

> h1=Header.create name:"h1"
> h2=Header.create name:"h2", parent: h1
> h1.reload
> h1.children
> h3=Header.create name:"h2", parent: h2
> h1.reload
> h1.children

That will start you with the basics of how the gem works