Laravel 动态读取mysql表数据（包含列、值

Laravel 动态读取mysql表数据（包含列、值 。难点，出现对象数组且列不确定

1、字段列取出

2、数据取出

3、页面遍历列

4、对象->列 取出 表中值



Model层

<pre style="background-color:#272822;color:#f8f8f2;font-family:'Source Code Pro';font-size:13.5pt;">$results <span style="color:#f92672;">= </span>DB<span style="color:#f92672;">::</span><span style="color:#a6e22e;">select</span>(<span style="color:#e6db74;">"select COLUMN_NAME from information_schema.COLUMNS where table_name = '</span><span style="color:#fd971f;font-style:italic;">$tableName</span><span style="color:#e6db74;">' and table_schema='dmp_line2';"</span>);

$results = DB::select("select COLUMN_NAME from information_schema.COLUMNS where table_name = '$tableName' and table_schema='dmp_line2';");

public function getTableC() //得到表所有列名 { $results = DB::select("select COLUMN_NAME from information_schema.COLUMNS where table_name = 'db_20160420063047753'"); return $results; } public function getTableDate($recode) //得到表数据,含分页。(每页显示$recode条数据 { //使用查询构建器进行简单分页，每页显示3条记录
//$posts = DB::table('20160420063047753')->simplePaginate(3); $posts = DB::table('20160420063047753')->paginate($recode); return $posts; }改写为：<pre name="code" class="php"> public function getTableC($tableName) //根据表名得到表所有列名 { $tableName = "db_".$tableName;
//$results = DB::select("select COLUMN_NAME from information_schema.COLUMNS where table_name = '$tableName'");

//加库名： table_schema

$results = DB::select("select COLUMN_NAME from information_schema.COLUMNS where table_name = '$tableName' and table_schema='dmp_line2';");

return $results; } public function getTableDate($tableName,$recode) //得到表数据,含分页。(每页显示$recode条数据 { //使用查询构建器进行简单分页，每页显示3条记录 //$posts = DB::table('20160420063047753')->simplePaginate(3); $posts = DB::table("$tableName")->paginate($recode); return $posts; }

Control层

$users = new Users();
$tableC = $users->getTableC();
//var_dump(count($tableC));die();
//var_dump($tableC);
$recode = 3; //每页显示条数
$tableDate = $users->getTableDate($recode); //得到表中数据，并分页，每页3条数据

return view('index.index',compact('tableC','tableDate','recode'));

View层

<table id="tt" class="oBoder_lqq" width="100%" border="1" cellspacing="0" cellpadding="0">
<tr class="oTitle_lqq">
@foreach ($tableC as $task)
<th scope="col" class="oTD8">{{ $task->COLUMN_NAME }}</th>

@endforeach
</tr>

<?php
$currentPage = $tableDate->currentPage();
$id = ($currentPage - 1)*$recode + 1;
?>
<tr>

@foreach ($tableDate as $info)
<td>{{ $id }}</td>

@foreach ($tableC as $value)
<?php $key = $value->COLUMN_NAME; ?>
<?php if($key!='id'){ ?>
<td><p class="DMP_P2">{{ $info->$key }}</p></td>
<?php } ?>
@endforeach

</tr>

<?php $id = $id + 1; ?>
@endforeach

</table>

<pre style="background-color:#272822;color:#f8f8f2;font-family:'Source Code Pro';font-size:13.5pt;"><<span style="color:#e3e3ff;font-weight:bold;">div </span><span style="color:#a6e22e;">class=</span><span style="color:#e6db74;font-weight:bold;">"page_list"</span>>
{{$tableDate<span style="color:#f92672;">-></span><span style="color:#a6e22e;">links</span>()}}

</<span style="color:#e3e3ff;font-weight:bold;">div</span>>  //分页

======================

难点

表数据, 存在对象-> (那么解决的话，就可以单独把列也取出来，然后去拼 ->



----------------------------

列



注：如需分页显示， 跳转时，数据丢失，则需要重新调取单纯的分页显示 模块

在同一方法时需要

$view_page = false;
if($input = Input::all()){
if(isset($input['page'])){
$view_page = true;
}
}

再次跳转进来时，判断page是否有值，有的话就是分页显示的

//第一次调用数据表中数据
//调用表并进行分页，值加载到页面view中
$users = new Users();
$recode = 3; //每页显示条数

$view_pages = $this->view_pages($tabl_name,$recode);
$tableC = $view_pages[0];   //表中列
$tableDate = $view_pages[1]; // 表中数据
$recode = $view_pages[2];   //每页显示条数

//将表名、每页显示条数存入session
$_SESSION['tableName'] = $tabl_name;
$_SESSION['recode'] = $recode;

第二次调用

elseif($view_page){

//$view = $this->view_pages();
//die();
$tabl_name = $_SESSION['tableName'];
$recode = $_SESSION['recode'];

$view_pages = $this->view_pages($tabl_name,$recode);
$tableC = $view_pages[0];   //表中列
$tableDate = $view_pages[1]; // 表中数据
$recode = $view_pages[2];   //每页显示条数

return view('query.index',compact('tableC','tableDate','recode'));

下边是调用的模块

//根据表名、每页显示条数，对表数据进行分页处理
public function view_pages($table,$recode) //$table,$recode
{
//echo "234234";
$users = new Users();
$tableC = $users->getTableC($table);

//$recode = 3; //每页显示条数
$tableDate = $users->getTableDate($table,$recode); //得到表中数据，并分页，每页3条数据

$new_array = array($tableC,$tableDate,$recode);

return $new_array;

//return view('query.index',compact('tableC','tableDate','recode'));
}