ruby on rails - Recursion-Printing Parents and Children with indentation(haml) -

ruby on rails - Recursion-Printing Parents and Children with indentation(haml) -

i trying print parents' , children's name indentation. not sure how can in view.(haml)

i have model self join:(just give structure, have other attributes etc. think irrelevant)

class post < activerecord::base has_many :children, :class_name => "post" belongs_to :parent, :class_name => "post", :foreign_key => "post_id" end

so has hierarchy , wanna have this(let's assume attribute 'name'):

post 1 post 1.1 post 1.2 post 2 post 2.1 post 2.2

i pretty new in ruby-on-rails. please bear me. really appreciate if quite explanatory answer.

thank much in advance, j

you can utilize recursion. create partial calls itself.

# app/views/posts/_post.html.haml = post.title = post.content = render partial: 'post', collection: post.children

i'm assuming have posts controller comes folder it's views in app/views/posts. need create partial there called _post.html.haml calls itself. render line tells render same partial each of post's children.

the indentation can handled via css.

ruby-on-rails recursion