laravel運用Migrate進行建表

建立一個migrate

php artisan make:migration create_table_anke 

編寫migrate建表

Schema::create('anke', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name', 20);
    $table->timestamps();
});

表生成器包含一系列的字段類型用於構建表：

命令	描述
$table->bigIncrements('id');	Incrementing ID using a "big integer" equivalent.
$table->bigInteger('votes');	BIGINT equivalent to the table
$table->binary('data');	BLOB equivalent to the table
$table->boolean('confirmed');	BOOLEAN equivalent to the table
$table->date('created_at');	DATE equivalent to the table
$table->dateTime('created_at');	DATETIME equivalent to the table
$table->decimal('amount', 5, 2);	DECIMAL equivalent with a precision and scale
$table->double('column', 15, 8);	DOUBLE equivalent with precision
$table->enum('choices', array('foo', 'bar'));	ENUM equivalent to the table
$table->float('amount');	FLOAT equivalent to the table
$table->increments('id');	Incrementing ID to the table (primary key).
$table->integer('votes');	INTEGER equivalent to the table
$table->longText('description');	LONGTEXT equivalent to the table
$table->mediumText('description');	MEDIUMTEXT equivalent to the table
$table->morphs('taggable');	Adds INTEGER taggable_id and STRING taggable_type
$table->smallInteger('votes');	SMALLINT equivalent to the table
$table->softDeletes();	Adds deleted_at column for soft deletes
$table->string('email');	VARCHAR equivalent column
$table->string('name', 100);	VARCHAR equivalent with a length
$table->text('description');	TEXT equivalent to the table
$table->time('sunrise');	TIME equivalent to the table
$table->timestamp('added_on');	TIMESTAMP equivalent to the table
$table->timestamps();	Adds created_at and updated_at columns
->nullable()	Designate that the column allows NULL values
->default($value)	Declare a default value for a column
->unsigned()	Set INTEGER to UNSIGNED

更多請看https://blog.csdn.net/kjw001122/article/details/79908419

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我們在以上運用 $table->timestamps(); 生成添加時間及修改時間，但是這個時間自Laravel 5.3後時間默認爲null  ，在操作時需要自己手動添加時間

如果想要在migrate中設置時間爲自動更新 需要進行已下操作
use Illuminate\Support\Facades\DB;
$table->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP'));
$table->timestamp('updated_at')->default(DB::raw('CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP'));