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Package laravel-super-migrations
Short Description This Laravel package is useful for big databases for a better migrations structure.
License MIT
Homepage http://github.com/proai/laravel-super-migrations
Informations about the package laravel-super-migrations
Laravel Super Migrations
This is an extension for the Laravel migrations. It is useful when you have a big database that results in a lot of migration files. This package will help you to reduce the number of migration files and furthermore it will give you a better structure with which you will have all schema updates for a table in one file.
Installation
You can install the package via composer:
Usage
Basically we do not define table builder schemas by migration, but by table. For this purpose you need to create a tables
folder in the database/migrations
directory. For each table we will create a file in this new directory and link it in the migration files whereever needed. Here is a more detailed explanation:
Migration Classes
Firstly here is a migration file in the database/migrations
folder. Notice that we extend the ProAI\SuperMigrations\Migration
class. Instead of an up()
and a down()
method this class needs a schemas()
method:
The schemas()
method returns a list of all database tables that are affected by this migration (users
and comments
table in the example above). Since there can be more than one migration for a database table, we also need to assign a migration specific name for each table (i.e. create
for the users
and comments
table).
With this pattern we can easily bundle schemas in one migration file. One more example: Let's say we want to add a roles table and a column for the role_id
in the users table, then the schemas()
method could look like the following:
The idea behind this is that one migration file includes all schemas for a whole update step rather than just for a table (i.e. one migration InitProject
vs. multiple migrations CreateUsersTable
, CreateCommentsTable
etc.). This way you will have less migration files.
Table Classes
For each tablename that is returned by the schemas()
method Laravel Super Migrations searches for a php file in database/migrations/tables
with the same name (i.e. for the table users
there must exist a file users.php
). This file must contain a class that extends ProAI\SuperMigrations\Table
and that is named after the table (in camel case) with a Table
suffix. For example the classname must be UsersTable
for a table users
.
Furthermore for each of the migration specific names that we declared in the migration file, the table class must declare a method with the same name (i.e. a create
method for the users table). Here is a sample users table class that fits to the migration class from the previous section:
We use $this->upSchema()
and $this->downSchema()
to define the up and down schema. These methods return a ProAI\SuperMigrations\Builder
instance that is similar to the Laravel database schema builder (see Laravel docs). The only difference is that you don't need the tablename as first argument, because the tablename is already known. Furthermore we use $this->up(...)
and $this->down(...)
to insert custom code like raw DB statements (usually we don't need these methods).
Generator Command
Run php artisan make:super-migration
to create a new migration class that fits to the pattern of this package. You can declare a custom path with the --path
option. Note that you have to include the service provider in order to use this command (see installation section).
Support
Bugs and feature requests are tracked on GitHub.
License
This package is released under the MIT License.