hierarchical-trees

Converting tree list to hierarchy dict

由 ε祈祈猫儿з 提交于 2020-01-12 03:37:06
问题 I have a list of elements with attrs: parent, level, is_leaf_node, is_root_node, is_child_node. I want to convert this list to hierarchy dict. Example of output dict: { 'Technology': { 'Gadgets':{}, 'Gaming':{}, 'Programming': { 'Python':{}, 'PHP':{}, 'Ruby':{}, 'C++':{} }, 'Enterprise':{}, 'Mac':{}, 'Mobile':{}, 'Seo':{}, 'Ui':{}, 'Virtual Worlds':{}, 'Windows':{}, }, 'News':{ 'Blogging':{}, 'Economics':{}, 'Journalism':{}, 'Politics':{}, 'News':{} },} I don't know algorithm. How to do it?

How to get an hierarchical php structure from a db table, in php array, or JSON [duplicate]

由 自古美人都是妖i 提交于 2020-01-01 19:33:08
问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: Turn database result into array Hi guys, can you please help me. How to get an hierarchical php structure from a db table, in php array, or JSON, but with the following format: [ { "attributes":{ "id":"111" }, "data":"Some node title", "children":[ { "attributes":{ "id":"555" }, "data":"A sub node title here" } ], "state":"open" }, { "attributes":{ "id":"222" }, "data":"Other main node", "children":[ {

How do I query for all the nodes between two nodes in a tree?

由 丶灬走出姿态 提交于 2019-12-23 00:25:17
问题 I have a hierarchical database strucutre, e.g. columns ID and PARENT_ID defined for each row, with the top level rows having a NULL PARENT_ID . I have all the relationships from this table flattened into another table, e.g. if there were three records in a single hierarchy of grandparent, parent, grandchild, there would be 3 records: **ANCESTOR, DESCENDANT** grantparent, parent grandparent, grandchild parent, grandchild Rather than execute a hierarchical query to determine that the grandchild

Recommendations with hierarchical data on non-relational databases?

由 爱⌒轻易说出口 提交于 2019-12-21 05:09:06
问题 I'm developing an web application that uses a non-relational database as a backend (django-nonrel + AppEngine). I need to store some hierarchical data (projects/subproject_1/subproject_N/tasks), and I'm wondering which pattern should I use. For now I thought of: Adjacency List (store the item's parent id) Nested sets (store left and right values for the item) In my case, the depth of nesting for a normal user will not exceed 4-5 levels. Also, on the UI, I would like to have a pagination for

JQuery, Hierarchical Table pagination

由 浪子不回头ぞ 提交于 2019-12-12 13:17:37
问题 Hierarchical Table and table pagination is asked several times. But I am looking for both of them together. Am already using JQuery in my application so plugin using same will be useful, but I am open for any suggestion. At present I managed to display Hierarchical data by using some jQuery plugin and added my own pagination method, but it is falling short. I am looking for something like this with pagination. http://docvert.org/holloway.co.nz/blog/wp-content/uploads/2008/07/treeview1.png 回答1

How to get parent id(root parent) from child id [duplicate]

由 对着背影说爱祢 提交于 2019-12-10 23:18:53
问题 This question already has an answer here : Closed 7 years ago . Possible Duplicate: function returning only once, why? my Database structure looks like id|parent| 1 | 0 | 2 | 0 | 3 | 0 | 4 | 1 | 5 | 4 | 6 | 5 | I am in need of a function that gets parent(i.e parent=0) for a id as parameter For eg .. get_parent(6)==returns 1 I did some research and found this question How can I recursively obtain the "parent ID" of rows in this MySQL table? I tried making this function function get_parent_id(

How do I query for all the nodes between two nodes in a tree?

由 耗尽温柔 提交于 2019-12-06 04:41:55
I have a hierarchical database strucutre, e.g. columns ID and PARENT_ID defined for each row, with the top level rows having a NULL PARENT_ID . I have all the relationships from this table flattened into another table, e.g. if there were three records in a single hierarchy of grandparent, parent, grandchild, there would be 3 records: **ANCESTOR, DESCENDANT** grantparent, parent grandparent, grandchild parent, grandchild Rather than execute a hierarchical query to determine that the grandchild is a descendant of the grandparent I can simply check for the existence of a (grandparent, grandchild)

Ruby on Rails: Routing for a tree hierarchy of places

由 纵然是瞬间 提交于 2019-12-05 06:20:56
问题 So we've got a legacy system that tracks places with IDs like "Europe/France/Paris", and I'm building a Rails facade to turn this into URLs like http:// foobar/places/Europe/France/Paris. This requirement is not negotiable, the number of possible levels in unlimited, and we can't escape the slashes. Setting up routes.rb for http://foobar/places/Europe is trivial: map.resources :places ...but http:// foobar/places/Europe/France complains "No action responded to Europe". I tried: map.connect '

How to get an hierarchical php structure from a db table, in php array, or JSON [duplicate]

由 人走茶凉 提交于 2019-12-04 18:38:52
Possible Duplicate: Turn database result into array Hi guys, can you please help me. How to get an hierarchical php structure from a db table, in php array, or JSON, but with the following format: [ { "attributes":{ "id":"111" }, "data":"Some node title", "children":[ { "attributes":{ "id":"555" }, "data":"A sub node title here" } ], "state":"open" }, { "attributes":{ "id":"222" }, "data":"Other main node", "children":[ { "attributes":{ "id":"666" }, "data":"Another sub node" } ], "state":"open" } ] My SQL table contains the fields: ID, PARENT, ORDER, TITLE Can you please help me with this? I

Converting tree list to hierarchy dict

由 吃可爱长大的小学妹 提交于 2019-12-03 03:58:05
I have a list of elements with attrs: parent, level, is_leaf_node, is_root_node, is_child_node. I want to convert this list to hierarchy dict. Example of output dict: { 'Technology': { 'Gadgets':{}, 'Gaming':{}, 'Programming': { 'Python':{}, 'PHP':{}, 'Ruby':{}, 'C++':{} }, 'Enterprise':{}, 'Mac':{}, 'Mobile':{}, 'Seo':{}, 'Ui':{}, 'Virtual Worlds':{}, 'Windows':{}, }, 'News':{ 'Blogging':{}, 'Economics':{}, 'Journalism':{}, 'Politics':{}, 'News':{} },} I don't know algorithm. How to do it? Matt S. Here's a less sophisticated, recursive version like chmod 700 described. Completely untested of
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