创建数据库的代码

php artisan make:model Audience -m

创建语句编写

            $table->id(); 
            $table->string('name');  
            $table->string('country'); 
            $table->string('exclude_country');  
            $table->string('language');  
            $table->string('gender');  
            $table->integer('min_age'); 
            $table->integer('max_age');  
            $table->string('interests');  
            $table->string('must_include');  
            $table->string('exclude');  
            $table->string('notes');  
            $table->timestamps();  

$table->timestamps(); 包括了创建时间和更新时间很重要

php artisan migrate