如何从外部mysql数据库将数据导入Symfony2项目？

Question

I'm developping a new version of my website with Symfony2. I used mysql on the previous version and now I use Doctrine2/Mysql. I want to import my User Table into the new version. I think that the best way is to use the command tool provided by Symfony2.

However, I don't know how to browse my old mysql database (or mysql dump) in order to execute php script to populate my new database.

Any ideas ?

Answer 1

You don't need to have a new database, you can keep using the actual one. But if you ever want duplicate it, you can use the mysqladmin command tool .
Then, you can generate your entities from your database .

Answer 2

Sounds tricky enough to be an ETL problem. There are a number of tools out there; many enterprise though a few dual licensed open source. If you're only doing this once, then many of the tools may be overly complex. If you have to do this kind of data munging often, however, then a good ETL app can be a huge time saver. I can recommend Altova's MapForce as one of the more straightforward and intuitive. It's Windows-only though.

Answer 3

I did it !

I don't know if that is the best solution but it works.

1) Import the old table in my new database

2) Ask Doctrine to introspect the database and generate the corresponding metadata files.

php app/console doctrine:mapping:convert xml ./src/Acme/BlogBundle/Resources/config/doctrine/metadata/orm --from-database --force

3) Ask Doctrine to import the schema and build related entity classes by executing the following command

php app/console doctrine:mapping:import AcmeBlogBundle annotation

Now, I can use this EntityManager on my old database to do all the scripts I want.

You can find more information here : http://symfony.com/doc/current/cookbook/doctrine/reverse_engineering.html