I have a system made with Laravel. As we know, we can make database migrations in Laravel using php artisan.
So bacially, you create a migration file then edit it for the structure like tables and fields then run the migration command and it will create the database tables for you.
Question, is it possbile to the reverse? I have already an exisiting database with tables in it and already structured. Is there something I can do to to generate all the migration files needed for that without doing it manually for each one?
Yep, have a look at:
https://github.com/Xethron/migrations-generator
This works quite well, used it a few times on projects I've inherited from other developers.
Works with Laravel 5 too.
I have been enjoying working on Laravel for a while now, and am planning to move a fairly large project to Laravel 5.
The new project has fairly large database with numerous tables, and it would take considerable amount of time build migrations, models and controllers individually.
Has anybody worked on this before? What is the best way to go about it?
I have used this great extension to generate migrations as of now - but still for a 200+ tables, it would take quite a long time to do the rest.
Try this one:
https://github.com/reliese/laravel
Reliese Laravel is a collection of Laravel Components which aim is to help the development process of Laravel applications by providing some convenient code-generation capabilities.
How about this: http://packalyst.com/packages/package/ignasbernotas/laravel-model-generator
Model generator Laravel 5 model generator for an existing schema.
It plugs into your existing database and generates model class files
based on the existing tables.
For migrating models and controllers just use artisan commands, you can't get around it any easier than that. For the migrations I can suggest trying to use the following package:
Laravel Database Exporter
It will export your existing DB schemas as Laravel migrations. My suggestion is based on the assumption that you are using MySQL as your RDBMS, because the package I suggested only works with that.
Time ago I worked with yii framework.
In yii framework with yiic shell I make migration file and write actions for db: create table, alter table, create index and any actions with another (no db).
But in phalcon I don't see this. Yeah, I know about migrations, but what is it?
I make migration for my db with one table;
If I have empty db and use "phalcon migration run" then I have "table %name_table% don't exists"
And how I can use this for normal migrations?
And where phalcon save information about used migrations? Or every time start from 1.0.0 migration?
If you are using DevTools 3.1.2, run the following command to learn more about migration options in Phalcon 3
phalcon migration --help
Hope it helps
I think you need to dump one first - phalcon gen-migration
Try reading the full page and watching the tutorial video for them - http://docs.phalconphp.com/en/latest/reference/migrations.html
I'm working on a project that has a fairly complex database (150+ tables). In order to be able to maintain changes, I've decided to add migrations, preferably using Yii or Laravel.
Does anybody know, if it is possible to generate a initial migration from an existing database?
Creating it by hand would:
take for ever and
be very error-prone.
If there is no way, does anybody know a good PHP-based framework, that supports such functionality?
Instructions for accomplishing this in Yii:
Add your database connection settings to protected/config/console.php.
Run yiic migrate create initial to create the stub code for the migration.
Copy contents of this gist to protected/commands/InitialDbMigrationCommand.php.
Run yiic initialdbmigration 'name_of_your_database' > initial_migration.php to generate up() and down() methods for initial database migration.
Copy and paste up() and down() methods from initial_migration.php to the file created in the protected/migrations folder in step 2.
'Doctrine Project' (aka Doctrine) has the ability to create DB migrations for existing DB structures, so you can recreate the existing structure. It can be easily implemented in Symfony, Laravel, also in Yii and many frameworks.
Sample from:
http://symfony.com/legacy/doc/doctrine/1_2/en/07-Migrations
From Database
If you have an existing database you can build a set of migration
classes that will re-create your database by running the following
command.
$ ./symfony doctrine:generate-migrations-db
From Models
If you have an existing set of models you can build a set of migration
classes that will create your database by running the following
command.
$ ./symfony doctrine:generate-migrations-models
Here is a Laravel package I created that does exactly that. It automatically generates clean and accurate Laravel migrations from your existing database.
As it doesn't make any assumptions of the database, it should work on any database structure while even keeping the original index and foreign key names.
https://github.com/Xethron/migrations-generator
Well since migration is about setting up your database structure and make changes to it, not to reflect a current database there is no such way.
And this is also not a step you have to make. You can start from where you are at the moment, which will make you able to rollback up to this point. Which means you can make migrations for your current tables without having to specify their entire structure, but just the changes only.
Let's say you have a table called user and want to add their firstname to it.
php artisan migrate:make add_firstname_to_user
Now go into application/migrations and find the migration file, add this
public function up()
{
Schema::table('user', function($table)
{
$table->string('firstname');
});
}
public function down() {
Schema::table('user', function($table)
{
$table->drop_column('firstname');
});
}
Now you can add migrate it
php artisan migrate:install // if you haven't run this, should only be once
php artisan migrate
.. and rollback using
php artisan migrate:rollback
This will add or drop the column firstname, without affecting your table in any other way.
As for Yii 1.x, schmunk has created a wonderful database-command yiic command.
This command covers only up migrations. You must write your own down migrations.
To use it:
Get the newest version from GitHub and put it's contents into /protected/commands folder (create one, if it does not exist). Note, that you need to put contents as is (without subfolder for this particular command), which is contrary to what we do for example for extensions.
Rename EDatabaseCommand.php file (and class inside) to DatabaseCommand.php, if you want to use yiic database command (as suggested in docs). Without this fix, you'll have to use yiic edatabase command, as there's slight inconsistency between docs and the code (at least in the newest version, as of writing this; maybe schmunk is going to fix this).
Having this, navigate back to protected folder in your console and execute yiic database dump migration_name --prefix=table_name.
This will create a migration protected/runtime/migration_name.php file with proper date and time in the beginning of file name, filled with series of CDbMigration commands to recreate your database schema. Visit "Usage" section in the docs to read more about customizing command.
I think that the answer is: https://github.com/jamband/yii2-schemadump for Yii2
"This command to generate the schema from an existing database."
I use both Yii and Laravel and I could not find what you require for either of them. They both create empty files and you need to create the migration script yourself.
For a table of 150 tables it will be challenge to create the migrations yourself, but it is not quite as hard as you imagine. Because you already have the information on the fields it should not take so long to create.
After doing some research, here's what you're going to need for Laravel: https://github.com/XCMer/larry-four-generator
(version 4 at least, who knows how long this will work, Laravel changes too fast and has too many breaking changes)
You'll want to run php artisan larry:fromdb and it'll show you the tables...You can also exclude or only process certain tables (look at the readme).
Again, super super useful if you like to build your schema in something like MySQL Workbench. I also saw mention of a package that would parse the workbench files...But the link was dead.
You may also wish to use this larry package with: https://github.com/JeffreyWay/Laravel-4-Generators
You can then create scaffolding a la CakePHP style.
Alternatively, try this package: https://github.com/barryvdh/laravel-migration-generator
There is one now for Yii:
This allows a distributed team to easily update the db locally and then distribute it's updates with thee other developers automatically with the rest of the code via a versioning control system (I used git). It also performs a full initial db dump to xml and to a migration file.
project home:
https://code.google.com/p/yii-automatically-generated-migration-files/
source code:
https://code.google.com/p/yii-automatically-generated-migration-files/source/checkout
I've created it from scratch as I was annoyed with the fact that I had to do this manually in order to distribute it to my team.
Hope it helps!
Feel free to share bugs, improvements and comments.
Question about migrations, announced at one of the latest releases(1.1.6, am I right?)
So, i have a site working with yii 1.1.5 and i want use migrations now, cause site progressing every day. What is the best way to describe first migration, which include all my current database schema?
when you say describe first migration do you mean the class and file name?
yiic migrate create init_db_schema
EDIT
In which case I don't believe the migration tool can reverse engineer an existing db and create the migration for you. So, you'll probably have to manually do it. You could use PHPMyAdmin, MySQL Browser/Workbench to generate the CREATE commands for you and inside your migration script, create the command e.g.
$cmd = $this->getDbConnection()->createCommand($sql);
$cmd->execute();