Laravel migration offers the unique() method as a means to include a unique constraint. I will now provide a straightforward example of how to incorporate a unique constraint through Laravel migration. Addition
You can use thedropColumn()method on the Schema facade to drop columns. Let’s try dropping thewalletcolumn that you added. To do this, you need to create another migration file. In your migration file, under theup()method, drop thewalletcolumn with the following code: publicfunctionup()...
You may drop multiple columns from a table by passing an array of column names to the dropColumn method:1Schema::table('users', function (Blueprint $table) { 2 $table->dropColumn(['votes', 'avatar', 'location']); 3});Dropping or modifying multiple columns within a single migration ...
Dropping or modifying multiple columns within a single migration while using a SQLite database is not supported.Available Command AliasesCommandDescription $table->dropMorphs('morphable'); Drop the morphable_id and morphable_type columns. $table->dropRememberToken(); Drop the remember_token column. ...
Migration StructureA migration class contains two methods: up and down. The up method is used to add new tables, columns, or indexes to your database, while the down method should reverse the operations performed by the up method.Within both of these methods you may use the Laravel schema ...
php artisan make:migration create_users_table --create=users #执行迁移 A migration class contains two methods:upanddown. Theupmethod is used to add new tables, columns, or indexes to your database, while thedownmethod should simply reverse the operations performed by theupmethod. ...
Short example for profile migration file: classCreateProfileTableextendsMigration {publicfunctionup() { Schema::create('user_profile',function(Blueprint$table) {$table->engine='InnoDB';$table->increments('id');// Foreign connection to user table$table->unsignedInteger('user_id') ->unique();$...
Unique: @@unique If you need to set some unique rules that considers multiple columns, you can use this attribute. model Example { id Int @id @default(autoincrement()) firstname String lastname String @@unique([firstname, lastname]) } Ignore: @@ignore If you need to skip the generatio...
id之间的约束的名称/键。命名没有错误。您的外键没有正确的字段类型，它必须是一个无符号大整数。
本文档前言 Laravel 文档写的很好,只是新手看起来会有点吃力,需要结合经验和网上的文章,多读、细读才能更好的理解。Again,多读、细读官方文档。本文类似于一个大纲,欲知其中详情,且去细读官方文档:Laravel 5.5 docs。### ### ###