Laravel 5框架學習之向視圖傳送數(shù)據，laravel框架
Jun 13, 2016 am 09:07 AM
Laravel 5框架學習之向視圖傳送數(shù)據，laravel框架
我們在Routes.php中新建一個路由
復制代碼 代碼如下:
Route::get('about', 'PagesController@about');
在瀏覽器中瀏覽會獲得一個錯誤，錯誤信息僅僅是一個提示信息，缺少細節(jié)，在生產環(huán)境 It' ok，但是開發(fā)階段我們希望獲得詳細信息。
在項目的根目錄找到 .env 文件，修改
復制代碼 代碼如下:
APP_DEBUG=true
這將顯示詳細的錯誤信息，PagesController 不存在。但在生產環(huán)境一定要設置為 false
我們可以手工新建控制器，但更快的方式是利用 laravel 提供的生成器。在命令行當前項目目錄中運行：
復制代碼 代碼如下:
php artisan
可以看到laravel提供的功能。
復制代碼 代碼如下:
php artisan make:controller PagesController
ok，在 app->http->controller 下面生成了 PagesController.php
<?php namespace App\Http\Controllers;
use App\Http\Requests;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
class PagesController extends Controller {
/**
* Display a listing of the resource.
*
* @return Response
*/
public function index()
{
//
}
/**
* Show the form for creating a new resource.
*
* @return Response
*/
public function create()
{
//
}
/**
* Store a newly created resource in storage.
*
* @return Response
*/
public function store()
{
//
}
/**
* Display the specified resource.
*
* @param int $id
* @return Response
*/
public function show($id)
{
//
}
/**
* Show the form for editing the specified resource.
*
* @param int $id
* @return Response
*/
public function edit($id)
{
//
}
/**
* Update the specified resource in storage.
*
* @param int $id
* @return Response
*/
public function update($id)
{
//
}
/**
* Remove the specified resource from storage.
*
* @param int $id
* @return Response
*/
public function destroy($id)
{
//
}
}
這樣生成的controller包含了全部所需要的RESTful方法，我們可以簡化一下。刪除生成的PagesController.php，在命令行運行：
復制代碼 代碼如下:
php artisan make:controller PagesController --plain
再看一下生成的結果
復制代碼 代碼如下:
use App\Http\Requests;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
class PagesController extends Controller {
?//
}
基本上是一個空的controller，所有的方法我們需要自己創(chuàng)建。
如果你想知道到底有什么參數(shù)我們可以在命令行執(zhí)行，你可以運行下面的命令來查看幫助
復制代碼 代碼如下:
php artisan help make:controller
ok, 你可以經常使用help命令來幫助你了解這些參數(shù)。
在PagesController中建立about方法。
復制代碼 代碼如下:
?public function about() {
??????? return 'About Page';
??? }
在瀏覽器沖查看結果，錯誤消失，返回簡單的信息。
返回視圖
我們當然希望返回html文檔，修改about方法的返回：
復制代碼 代碼如下:
?public function about() {
??????? return view('pages.about');
??? }
注意：返回的結果是 pages.about ，這表示在 views 子目錄中的 pages 子目錄中的 about.balde.php 文件。讓我們創(chuàng)建 resources\views\pages\about.balde.php 文件
復制代碼 代碼如下:
???
???
About
That's it. 運行瀏覽器查看吧，??
向視圖傳送數(shù)據
修改PagesController.php
復制代碼 代碼如下:
?public function about() {
??????? $name = 'Zhang Jinlgin';
??????? return view('pages.about')->with('name', $name);
??? }
修改我們的視圖文件 about.blade.php
復制代碼 代碼如下:
About
Bingo，查看結果吧。
我們使用的laravel使用了blade模板，我們可以利用這個好處修改視圖：
復制代碼 代碼如下:
About {{ $name }}
看起來更好了，在blade中，{{}}是轉義html的語義的，讓我來修改一個數(shù)據：
復制代碼 代碼如下:
$name = 'Zhang Jinlgin';
查看結果，發(fā)現(xiàn)所有的html元素都被轉義了。但是如果不需要轉義html，可以使用 {!! !!}，修改視圖：
復制代碼 代碼如下:
About {!! $name !!}
再看結果，??
以上所述就是本文的全部內容了，希望能夠對大家熟練掌握Laravel5有所幫助。
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