Laravel เช็คคอลัมน์อยู่
รหัสตัวอย่าง
laravel ทิ้งคอลัมน์ถ้าอยู่ก่อน
if (Schema::hasColumn('users', 'phone')) {
Schema::table('users', function (Blueprint $table){
$table->dropColumn('phone');
});
}laravel ตรวจสอบว่าโต๊ะตัวคอลัมน์
if (Schema::hasTable('users')) {
// The "users" table exists...
}
if (Schema::hasColumn('users', 'email')) {
// The "users" table exists and has an "email" column...
}laravel migration ตรวจสอบว่าโต๊ะตัวคอลัมน์
// You may check for the existence of a table or column
// using the hasTable and hasColumn methods:
if (Schema::hasTable('users')) {
// The "users" table exists...
}
if (Schema::hasColumn('users', 'email')) {
// The "users" table exists and has an "email" column...
}หน้าคล้ายกัน
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ในภาษาอื่นๆ
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empty row
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ดังอยู่ในนี้หมวดหมู่
ดังหน้ากับตัวอย่างอยู่ในหมวดหมู่
empty row