An explanation of how symfony generates database table entities and migrates databases

After two days of contact, I found that symfony is really awesome. I was confused about which one is better, laravel or symfony. After learning laravel for a week, I found that there were too few documentation and learning materials. I immediately turned to symfony and discovered that it has the same functions as laravle. It’s almost the same, so I didn’t watch Laravle in vain the past week. But today I found a very good function, which is more similar to Java. I was happy for a while. Let me share with you how to automatically generate database table entities with just a few clicks like Java.

I use Symfony3.0, generates certain connection database configuration information for database entities. The connection configuration information is in the app/config/parameters.yml file. Symfony will automatically identify which database it is. If you want to study it carefully, check out the documentation! I was also drunk when talking about the document. I copied every sentence into Baidu Translate to understand the meaning.

Generate entities from database table

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1. Generate model from database:

　php bin/console doctrine:mapping: convert --from-database yml D:\db\

D:\test_backend>php bin/console doctrine:mapping:convert --from-database yml D:\db\
Processing entity "AppUser"
Processing entity "Channel"
Processing entity "MigrationVersions"

Exporting "yml" mapping information to "D:\db"

　(The model needs to change the first line of path, otherwise the following error will be reported in the instance table structure:)

　Invalid mapping file 'AppBundle.Entity.AppUser.orm.yml' for class 'AppBundle\Entity\AppUser'.

example:

　Model generated by app_user table The first line: 'AppUser:'; To change this to "AppBundle\Entity\AppUser:"

->PIZIYU

2. All table structures of the instance

Copy the table structure file to: AppBundle\Resources\config\doctrine

php bin/console doctrine:generate:entities AppBundle/Entity/ --path src/

Instance single table structure (SiteChannel ）

　php bin/console doctrine:generate:entities AppBundle/Entity/SiteChannel --path src/

D:\test_backend>php bin/console doctrine:generate:entities AppBundle/Entity/AppUser --path src/Generating entities for namespace "AppBundle\Entity\AppUser"
  > backing up AppUser.php to AppUser.php~
  > generating AppBundle\Entity\AppUser

Database migration (Symfony local migration to database):

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Start database migration: composer require doctrine/doctrine-migrations-bundle "^1.0"

Entity update to database

Resources-> ;Entity

　(Compare)

　php bin/console doctrine:migrations:diff

　(Migration)

　php bin/console doctrine:migrations:migrate

->Ruffian Fish

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