init library

TablesIgniterCI3.php

@@ -0,0 +1,217 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * TablesIgniter
+ *
+ * TablesIgniterCI3 基於 CodeIgniter3 。它將可以幫助你在 用 server side mode 中使用 jQuery Datatables。 
+ * TablesIgniter-ci3 based on CodeIgniter3. This  library will help you use jQuery Datatables in server side mode.
+ * @package    CodeIgniter3
+ * @subpackage libraries
+ * @category   library
+ * @version    1.0.0
+ * @author    monkenWu <610877102@mail.nknu.edu.tw>
+ * @link      https://github.com/monkenWu/TablesIgniter_ci3
+ *        
+ */
+
+class TablesIgniterCI3{
+
+    protected $builder;
+    protected $tableName;
+    protected $outputColumn;
+    protected $defaultOrder = [];
+    protected $searchLike = [];
+    protected $order = [];
+
+    public function __construct(array $init = []){
+        if(!empty($init)){
+            if(isset($init["setTable"][0]) && $init["setTable"][1])
+                $this->setTable($init["setTable"][0],$init["setTable"][1]);
+            if(isset($init["setOutput"]))
+                $this->setOutput($init["setOutput"]);
+            if(isset($init["setDefaultOrder"])){
+                foreach ($init["setDefaultOrder"] as $value) {
+                    $this->setDefaultOrder($value[0],$value[1]);
+                }
+            }
+            if(isset($init["setSearch"]))
+                $this->setSearch($init["setSearch"]);
+            if(isset($init["setOrder"]))
+                $this->setOrder($init["setOrder"]);
+        }
+    }
+
+    /**
+     * 設定欄位
+     */
+    public function setTable($builder,$tableName){
+        $this->builder = &$builder;
+        $this->tableName = $tableName;
+        return $this;
+    }
+
+    /**
+     * 設定參與搜索欄位
+     */
+    public function setSearch(array $like){
+        $this->searchLike = $like;
+        return $this;
+    }
+
+    /**
+     * 設定排序項目
+     */
+    public function setOrder(array $order){
+        $this->order = $order;
+        return $this;
+    }
+
+    /**
+     * 設定預設排序項目
+     */
+    public function setDefaultOrder($item,$type="ASC"){
+        $this->defaultOrder[] = array($item, $type);
+        return $this;
+    }
+
+    /**
+     * 設定實際輸出的序列
+     */
+    public function setOutput(array $column){
+        $this->outputColumn = $column;
+        return $this;
+    }
+
+    private function getBuilder(){
+        return clone $this->builder;
+    }
+
+    /**
+     * 搜索總筆數
+     */
+    private function getFiltered(){
+        $bui = $this->extraConfig($this->getBuilder());
+        $query = $bui->get($this->tableName)->num_rows();
+        return $query; 
+    }
+
+    /**
+     * 總筆數
+     */
+    private function getTotal(){
+        $bui = $this->getBuilder();
+        $query = $bui->count_all_results($this->tableName); 
+        return $query;  
+    }
+
+    /**
+     * 執行查詢
+     * 在此停止ci->db類別紀錄規則
+     * @return  array
+     */
+    private function getQuery(){
+        $bui = $this->extraConfig($this->getBuilder());
+        if(isset($_POST["length"])){
+            if($_POST["length"] != -1) {  
+                $bui->limit($_POST['length'], $_POST['start']);
+            }
+        }
+        //print_r($bui);
+        $query = $bui->get($this->tableName);
+        //print_r($this->getBuilder());
+        return $query;
+    }
+
+    /**
+     * 合成每列資料的內容。
+     */
+    private function getOutputData($row){
+        $subArray = [];
+        foreach ($this->outputColumn as $colKey => $data) {
+            if(gettype($data) != "string"){
+                $subArray[] = $data($row);
+            }else{
+                $subArray[] = $row[$data];
+            }
+        }
+        return $subArray;
+    }
+
+    private function makeOrLike(array $like_column,$value){
+        $where = "(";
+        for($k=0;$k<count($like_column);$k++){
+            if($k==0){
+                $where .= $like_column[$k];
+                $where .= " LIKE '%".$value."%'";
+            }else{
+                $where .= " OR ";
+                $where .= $like_column[$k];
+                $where .= " LIKE '%".$value."%'";
+            }
+            if($k == count($like_column)-1){
+                $where .= ")";
+            }
+        }
+        return $where;
+    }
+
+    /**
+     * 查詢是否有排序或搜索的要求
+     */
+    private function extraConfig($bui){
+        if(!empty($_POST["search"]["value"])){
+            $like = $this->makeOrLike(
+                $this->searchLike,
+                $_POST["search"]["value"]
+            );
+            $bui->where($like, NULL, FALSE);
+        }
+        if(isset($_POST["order"])){
+            if(!empty($this->order)){
+                if($this->order[$_POST['order']['0']['column']] != null){
+                    $bui->order_by($this->order[$_POST['order']['0']['column']], $_POST['order']['0']['dir']);  
+                }else{
+                    if(count($this->defaultOrder)!=0){
+                        foreach ($this->defaultOrder as $value) {
+                            $bui->order_by($value[0], $value[1]); 
+                        }
+                    }
+                }
+            }else{
+                if(count($this->defaultOrder)!=0){
+                    foreach ($this->defaultOrder as $value) {
+                        $bui->order_by($value[0], $value[1]); 
+                    }
+                }
+            }
+        }else{
+            if(count($this->defaultOrder)!=0){
+                foreach ($this->defaultOrder as $value) {
+                    $bui->order_by($value[0], $value[1]); 
+                }
+            }
+        }
+        return $bui;
+    }
+
+    /**
+     * 取得完整的Datatable Json字串
+     */
+    public function getDatatable($isJson=true){
+        if($result = $this->getQuery()){
+            $data = array();
+            foreach ($result->result_array() as $row){
+                $data[] = $this->getOutputData($row);
+            }
+            $output = array(
+                "draw" => (int)($_POST["draw"] ?? -1),
+                "recordsTotal" => $this->getTotal(),
+                "recordsFiltered" => $this->getFiltered(),
+                "data" => $data
+            );
+            return $isJson ? json_encode($output) : $output;
+        }
+        return $data;
+    }
+
+}
+?>