本文是本系列教程的完结篇,我们将一起给 Page 加入评论功能,让游客在前台页面可以查看、提交、回复评论,同时我们将在后台完善评论管理功能,可以删除、编辑评
Page 和评论将使用 Eloquent 提供的“一对多关系”。最终,我们将得到一个个人博客系统的雏形,并布置一个大作业,供大家实战练习。
1. 初识 Eloquent
Laravel Eloquent ORM 是 Laravel 中非常重要的部分,也是 Laravel 能如此流行的原因之一。中文文档在:
1.
2.
在前面的教程中已经建立好的 learnlaravel5/app/Page.php 就是一个 Eloquent Model 类:
若想进一步了解 Eloquent,推荐阅读系列文章:深入理解 Laravel Eloquent
2. 创建 Comment 模型
首先我们要新建一张表来存储 Comment,命令行运行:
复制代码 代码如下:
php artisan make:model Comment
成功以后,修改 migration 文件 learnlaravel5/database/migrations/***_create_comments_table.php 的相应位置为:
Schema::create('comments', function(Blueprint $table) { $table->increments('id'); $table->string('nickname'); $table->string('email')->nullable(); $table->string('website')->nullable(); $table->text('content')->nullable(); $table->integer('page_id'); $table->timestamps(); });
之后运行:
复制代码 代码如下:
php artisan migrate
去数据库里瞧瞧,,comments 表已经躺在那儿啦。
3. 建立“一对多关系”
修改 Page 模型:
hasMany('App\Comment', 'page_id', 'id'); } }
搞定啦~ Eloquent 中模型间关系就是这么简单。
模型间关系中文文档:
4. 前台提交功能
修改 Comment 模型:
增加一行路由:
复制代码 代码如下:
Route::post('comment/store', 'CommentsController@store');
运行以下命令创建 CommentsController 控制器:
复制代码 代码如下:
php artisan make:controller CommentsController
修改 CommentsController:
withInput()->withErrors('评论发表失败!'); } } }
修改视图 learnlaravel5/resources/views/pages/show.blade.php:
@extends('_layouts.default') @section('content')
⬅️返回首页
{{ $page->title }}
{{ $page->body }}
-
@foreach ($errors->all() as $error)
- {{ $error }} @endforeach
{{ $comment->nickname }}
@else{{ $comment->nickname }}
@endif{{ $comment->created_at }}
{{ $comment->content }}
前台评论功能完成。
查看效果:
5. 后台管理功能
修改基础视图 learnlaravel5/resources/views/app.blade.php 为:

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