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    五步搞定Laravel Migrations的使用

    藏色散人藏色散人2021-09-02 08:58:56转载140
    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

    CommandDescription
    $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!

    相关推荐:最新的五个Laravel视频教程

    以上就是五步搞定Laravel Migrations的使用的详细内容,更多请关注php中文网其它相关文章!

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