Hello. Let's just say I have tree in my table called "page": Foo -- Bar 1 -- Bar 2 -- Bar 3 -- Some foo -- Some value Bar -- Bar 4 I want to search by node's name. For example "bar%". Excpected output should be: Foo -- Bar 1 -- Bar 2 -- Bar 3 Bar -- Bar 4 I can't find solution to write right query in My...
How do I add children to a parent using the awesome_nested_set plugin? I have a model, Unit, which is a nested set. I'd like to add sub-units. Within the edit view, how I let the user add children (sub-units) to the parent (unit)? ...
Hi, I would like to use a nested set to manage the navigation of a website. Would it be better to have a single page model and just make the parent names define the sections of the site or would it be better to have a category model which can be nested and a separate page model, each of which belong to a category? Any advice appreciate...
Hi, Is there a simple way to display the entire nested set when using this plugin? What I would like to do is display an unordered list of root nodes with another unordered list inside each child that also contains children and so on? Any advice appreciated. Thanks. ...
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 online but the result is Item2 ABOVE Item1. - Root --- Item1 --- Item2 Thank you for the help. ...
I have a class MenuItem act as NestedSet with many roots: MenuItem: actAs: NestedSet: hasManyRoots: true rootColumnName: root_id I want to retrieve a path from root to selected node. SQL-query for this is: SELECT m2.* FROM menu_item m INNER JOIN menu_item m2 ON m2.lft <= m.lft AND m2.rgt >= m.rgt WHERE m...
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 ancestors and descendants. This is what I have come up with so far. SELECT DISTINCT Node, Parent, Description FROM Hierarchy INNER JOIN ...
Hoping some of you mysql experts can help me out. I have searchtag data that is stored in a nested set. TABLE searchTags searchTagID searchTag lft rgt (I am using nested sets because there are times when I need to easily select entire branches of the tree.) I would like to construct a query that will return a resultset of nodes ...
Are there any gems or plugins that offer a nested set but with a weight also. I want to be able to create a nested set and order each subset by its weight. ...
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. The nested sets model allows me to easily select entire branches of the tree - which I need to do. However it is not so easy to select immediate childr...
I'm working with a tree structure in MySQL that is respresented using the nested sets model. I'm hoping some of you sql experts can help me with building a SELECT query. I would like to be able to match a set of nodes using LIKE. For each node that is matched, I also need a comma-delimmited list of the ancestors of that node, and a co...
See http://dev.mysql.com/tech-resources/articles/hierarchical-data.html Under the heading "Aggregate Functions in a Nested Set" I'm trying to work out a query similar to the example given, except I want it to work at a sub-tree level, so if I queried for MP3 players I would get a result set like; |NAME |COUNT| -------------...
Hello, although I read through the manual here: http://www.doctrine-project.org/documentation/manual/1_2/hu/hierarchical-data I couldn't find a way to move a node from a Leaf to become a Root node. Any clues? The question is trivial for inserting a new node...but what about updating a node? ...
I have a many-to-many relation between labels and files (using rails). The labels model is also a nested set (awesome nested set plugin) that allows the lables to be organized in a hierarchy like: Multimedia Video mpeg-4 h264 theora Audio mp3 aac vorbis To access all the files under the Video label I would have to create some ...
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. For hierarchical data (categories with sub-categories in my case), I'm currently using something similar to the Adjacency List model. At the moment, I've only got 2 levels of categories, but I'd like to take it f...
What is the best way to add a sense of order in Doctrine Nested Sets? The documention contains several examples of how to get al the childeren of a specific node $category->getNode()->getSiblings() But how can I for example: change the position of the fourth sibling to the second position get only the second sibling add a sibling b...
Hi! I'm using a nested set in a MySQL table to describe a hierarchy of categories, and an additional table describing products. Category table; id name left right Products table; id categoryId name How can I retrieve the full path, containing all parent categories, of a product? I.e.: RootCategory > SubCategory 1 > SubCategory 2...
My model class is: class Category < ActiveRecord::Base acts_as_nested_set has_many :children, :foreign_key => "parent_id", :class_name => 'Category' belongs_to :parent, :foreign_key => "parent_id", :class_name => 'Category' def to_param slug end end Is it possible to have such recursive route like this: /root_category...
I'm trying to introduce a join to this query: SELECT `n`.*, round((`n`.`rgt` - `n`.`lft` - 1) / 2, 0) AS childs, count(*) - 1 + (`n`.`lft` > 1) + 1 AS level, ((min(`p`.`rgt`) - `n`.`rgt` - (`n`.`lft` > 1)) / 2) > 0 AS lower, (((`n`.`lft` - max(`p`.`lft`) > 1))) AS upper FROM `exp_node_tree_6` `n`, `exp_node_tree_6` `p`, `exp_node_tr...
There is no limitation on the depth. How to get the structed branch or even entire tree? The definition is from here: http://dev.mysql.com/tech-resources/articles/hierarchical-data.html ...