Laravel框架学习笔记(二)项目实战之模型(Models)


在开发mvc项目时,models都是第一步 。

下面就从建模开始 。

1.实体关系图,

由于不知道php有什么好的建模工具,这里我用的vs ado.net实体模型数据建模

下面开始laravel编码,编码之前首先得配置数据库连接,在app/config/database.php文件

mysql => array(
  driver => mysql,
  read => array(
   host => 127.0.0.1:3306,
  ),
  write => array(
   host => 127.0.0.1:3306
  ),
  database => test,
  username => root,
  password => root,
  charset => utf8,
  collation => utf8_unicode_ci,
  prefix => ,
 ),

配置好之后,需要用到artisan工具,这是一个php命令工具在laravel目录中

首先需要要通过artisan建立一个迁移 migrate ,这点和asp.net mvc几乎是一模一样

在laravel目录中 shfit+右键打开命令窗口 输入artisan migrate:make create_XXXX会在app/database/migrations文件下生成一个带时间戳前缀的迁移文件

代码:

<?php
 
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
 
class CreateTablenameTable extends Migration {
 
 /**
  * Run the migrations.
  *
  * @return void
  */
 public function up()
 {
  
 }
 
 /**
  * Reverse the migrations.
  *
  * @return void
  */
 public function down()
 {
 
 }
 
}

看到这里有entityframework 迁移经验的基本上发现这是出奇的相似啊 。

接下来就是创建我们的实体结构,laravel 的结构生成器可以参考http://v4.golaravel.com/docs/4.1/schema

<?php

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateTablenameTable extends Migration {

 /**
  * Run the migrations.
  *
  * @return void
  */
 public function up()
 {
  Schema::create(posts, function(Blueprint $table) {
   $table->increments(id);
   $table->unsignedInteger(user_id);
   $table->string(title);
   $table->string(read_more);
   $table->text(content);
   $table->unsignedInteger(comment_count);
   $table->timestamps();
  });

  Schema::create(comments, function(Blueprint $table) {
   $table->increments(id);
   $table->unsignedInteger(post_id);
   $table->string(commenter);
   $table->string(email);
   $table->text(comment);
   $table->boolean(approved);
   $table->timestamps();
  });

   Schema::table(users, function (Blueprint $table) {
   $table->create();
   $table->increments(id);
   $table->string(username);
   $table->string(password);
   $table->string(email);
   $table->string(remember_token, 100)->nullable();
   $table->timestamps();
  });
 }

 /**
  * Reverse the migrations.
  *
  * @return void
  */
 public function down()
 {
  Schema::drop(posts);

  Schema::drop(comments);

  Schema::drop(users);
 }

}

继续在上面的命令窗口输入php artisan migrate 将执行迁移

更多迁移相关知识:http://v4.golaravel.com/docs/4.1/migrations

先写到这里明天继续