There is no limitation on the 开发者_运维技巧depth. How to get the structured branch or even entire tree?
I\'m trying to introduce a join to this query: SELECT `n`.*, round((`n`.`rgt` - `n`.`lft` - 1) / 2, 0) AS childs,
My model class is: class Category < ActiveRecord::Base acts_as_nested_set has_many :children, :foreign_key => \"parent_id\", :class_name => \'Category\'
I know the nested set model doesn\'t pertain to the C# language or LINQ directly... it\'s what I\'m using to develop my web app.
although I read through the manual here: http://www.doctrine-project.org/documentation/manual/1_2/hu/hierarchical-data
I\'m working on building a tree structure in MySQL and have been experimenting with different ways of representing the data.However, no matter how I slice it, there are shortcomings.
Are there any gems or plugins tha开发者_如何学编程t offer a nested set but with a weight also.
I have a table in my database representing a tree. The data is stored using nested sets. I want to write a query to search the tree and return just the nodes that match a pattern, along with their anc
Existing Data (name, lft, rgt): Root, 1, 4 Item1, 2, 3 Looks like: - Root --- Item1 How do you insert a new node (Item2) BELOW Item1?My system\'s current logic follows most examples I\'ve found
Is there a simple way to display the entire nested set when using this plugin? What I would like to do is displa开发者_如何转开发y an unordered list of root nodes with another unordered list inside ea
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