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本文由Laravel教程栏目给大家介绍，主要内容是“Laravel如何使用Migrations”，希望对需要的朋友有所帮助！

Laravel：使用Migrations

1、首先利用artisan创建一个可迁移的数据表模板，该命令运行后会在database/migrations目录下生成一个文件

php artisan make:migration create_fees_count_table --create=fees_count

2、生成的文件包含up和down两个方法，其中up中是包含了添加表，添加列，添加索引等等一切的描述，down比较简单，就是删除表，当然里面还可以有一些其他逻辑

3、up中支持的数据表列类型，做个备注，暂时不做翻译

Command Description
$table->bigIncrements(‘id’); Incrementing ID (primary key) using a “UNSIGNED BIG INTEGER” equivalent.
$table->bigInteger(‘votes’); BIGINT equivalent for the database.
$table->binary(‘data’); BLOB equivalent for the database.
$table->boolean(‘confirmed’); BOOLEAN equivalent for the database.
$table->char(‘name’, 4); CHAR equivalent with a length.
$table->date(‘created_at’); DATE equivalent for the database.
$table->dateTime(‘created_at’); DATETIME equivalent for the database.
$table->decimal(‘amount’, 5, 2); DECIMAL equivalent with a precision and scale.
$table->double(‘column’, 15, 8); DOUBLE equivalent with precision, 15 digits in total and 8 after the decimal point.
$table->enum(‘choices’, [‘foo’, ‘bar’]); ENUM equivalent for the database.
$table->float(‘amount’); FLOAT equivalent for the database.
$table->increments(‘id’); Incrementing ID (primary key) using a “UNSIGNED INTEGER” equivalent.
$table->integer(‘votes’); INTEGER equivalent for the database.
$table->json(‘options’); JSON equivalent for the database.
$table->jsonb(‘options’); JSONB equivalent for the database.
$table->longText(‘description’); LONGTEXT equivalent for the database.
$table->mediumInteger(‘numbers’); MEDIUMINT equivalent for the database.
$table->mediumText(‘description’); MEDIUMTEXT equivalent for the database.
$table->morphs(‘taggable’); Adds INTEGER taggable_id and STRING taggable_type.
$table->nullableTimestamps(); Same as timestamps(), except allows NULLs.
$table->rememberToken(); Adds remember_token as VARCHAR(100) NULL.
$table->smallInteger(‘votes’); SMALLINT equivalent for the database.
$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 for the database.
$table->time(‘sunrise’); TIME equivalent for the database.
$table->tinyInteger(‘numbers’); TINYINT equivalent for the database.
$table->timestamp(‘added_on’); TIMESTAMP equivalent for the database.
$table->timestamps(); Adds created_at and updated_at columns.
$table->uuid(‘id’); UUID equivalent for the database.

4、表创建完成后，直接执行，由于我之前很多表创建并没有使用php artisan migrate，所以直接运行该命令导致提示部分表存在，所以，我把这个文件转移到database下tmp目录下，命令上添加 –path ‘database/tmp’，再次运行成功

php artisan  migrate

5、数据库中观察即发现表已创建！

以上就是五步搞定Laravel Migrations的使用的详细内容，更多请关注亿码酷站其它相关文章！


五步搞定Laravel Migrations的使用
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