Use ThinkPHP to automatically implement unlimited classification instance details, thinkphp instance

Use ThinkPHP to automatically implement unlimited classification instance details, thinkphp instance

I. Implementation results

　

Ii. Main Code

1. Template

　2. Controller

· Index module

· Add Module

　

3. Model

Iii. Code

This allows you to test the copy function.

　1. Template

<Form action = "_ URL _/add" method = "post"> topic <select name = "fid" size = 20> <option value = "0"> topic </option> <volist name = 'LIST' id = 'vo'> <option value = "{$ vo ['id']}"> {$ vo ['blank'] }{$ vo ['name'] }</option> </volist> </select> <br/> Add a topic: <input type = "text" name = 'name'/> <br/> <input type = "submit" value = "add"/> </form>

　　2. Controller

<? Phpclass IndexAction extends Action {/** + defaults * default operation + ---------------------------------------------------------- */public function index () {$ Column = new ColumnModel (); $ list = $ Column-> field ("id, name, fid, sort, concat (sort, '-', id) nsort")-> order ('nsort asc ') -> select (); foreach ($ list as $ key => $ val) {$ layer = count (explode ('-', $ list [$ key] ['nsort ']); $ list [$ key] [ 'Blank '] = ''; for ($ I = 0; $ I <$ layer; $ I ++) {if ($ I = $ layer-1) {$ list [$ key] ['blank ']. = '--- |';} else {$ list [$ key] ['blank ']. = '---' ;}}$ this-> assign ('LIST', $ list); $ this-> display ();} public function add () {$ Column = new ColumnModel; $ Column-> create (); if ($ Column-> add () {$ this-> success ('added successfully ');} else {$ this-> error ($ Column-> getError () ;}}}?>

　3. Model

<? Phpclass ColumnModel extends Model {protected $ _ auto = array ('name', 'trim', 0, 'function '), // filter the blank characters array ('sort ', 'createsort', 0, 'callback') accidentally entered by the user '),); /** automatically complete the sort field * query the parent sort based on the fid of the POST to determine the level of sort */protected function createsort () {$ fid = $ _ POST ['fid']? (Int) $ _ POST ['fid']: 0; // if the user does not select the parent column, the default parent column id is 0if ($ fid! = '0') {$ list = $ this-> where ("id = $ fid")-> find (); $ data = $ list ['sort ']. '-'. $ fid;} else {$ data = '0';} return $ data ;}}?>

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