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                [TOC] ## Schema ``` // 創建指定數據表 Schema::create('table', function($table) { $table->increments('id'); }); // 指定一個連接 Schema::connection('foo')->create('table', function($table){}); // 通過給定的名稱來重命名數據表 Schema::rename($from, $to); // 移除指定數據表 Schema::drop('table'); // 當數據表存在時, 將指定數據表移除 Schema::dropIfExists('table'); // 判斷數據表是否存在 Schema::hasTable('table'); // 判斷數據表是否有該列 Schema::hasColumn('table', 'column'); // 更新一個已存在的數據表 Schema::table('table', function($table){}); // 重命名數據表的列 $table->renameColumn('from', 'to'); // 移除指定的數據表列 $table->dropColumn(string|array); // 指定數據表使用的存儲引擎 $table->engine = 'InnoDB'; // 字段順序,只能在 MySQL 中才能用 $table->string('name')->after('email'); ``` ### 索引 ``` $table->string('column')->unique(); $table->primary('column'); // 創建一個雙主鍵 $table->primary(array('first', 'last')); $table->unique('column'); $table->unique('column', 'key_name'); // 創建一個雙唯一性索引 $table->unique(array('first', 'last')); $table->unique(array('first', 'last'), 'key_name'); $table->index('column'); $table->index('column', 'key_name'); // 創建一個雙索引 $table->index(array('first', 'last')); $table->index(array('first', 'last'), 'key_name'); $table->dropPrimary(array('column')); $table->dropPrimary('table_column_primary'); $table->dropUnique(array('column')); $table->dropUnique('table_column_unique'); $table->dropIndex(array('column')); $table->dropIndex('table_column_index'); ``` ### 外鍵 ``` $table->foreign('user_id')->references('id')->on('users'); $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade'|'restrict'|'set null'|'no action'); $table->foreign('user_id')->references('id')->on('users')->onUpdate('cascade'|'restrict'|'set null'|'no action'); $table->dropForeign(array('user_id')); $table->dropForeign('posts_user_id_foreign'); ``` ### 字段類型 ``` // 自增 $table->increments('id'); $table->bigIncrements('id'); // 數字 $table->integer('votes'); $table->tinyInteger('votes'); $table->smallInteger('votes'); $table->mediumInteger('votes'); $table->bigInteger('votes'); $table->float('amount'); $table->double('column', 15, 8); $table->decimal('amount', 5, 2); // 字符串和文本 $table->char('name', 4); $table->string('email'); $table->string('name', 100); $table->text('description'); $table->mediumText('description'); $table->longText('description'); // 日期和時間 $table->date('created_at'); $table->dateTime('created_at'); $table->time('sunrise'); $table->timestamp('added_on'); // Adds created_at and updated_at columns // 添加 created_at 和 updated_at 行 $table->timestamps(); $table->nullableTimestamps(); // 其它類型 $table->binary('data'); $table->boolean('confirmed'); // 為軟刪除添加 deleted_at 字段 $table->softDeletes(); $table->enum('choices', array('foo', 'bar')); // 添加 remember_token 為 VARCHAR(100) NULL $table->rememberToken(); // 添加整型的 parent_id 和字符串類型的 parent_type $table->morphs('parent'); ->nullable() ->default($value) ->unsigned() ->comment() ```
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