New template: migration

[ThomasBinsfeld]

What about a new migration template that would generate migration script for a given module?
When being in the current module's directory: mrbob bobtemplates.odoo:migration

It would ask for:

• new module version
• use openupgrade? (yes/no)
• pre-migrate? (yes/no)
• post-migrate? (yes/no)

And then it would:

• generate the migrations/{version_number}/(pre/post)-migrate.py file(s)
• import logging and add a default _logger.info() message in the migrate method
• if the use of openupgrade is selected:
  • import openupgrade
  • add the @openupgrade.migrate(use_env=True) decorator and use the env variable in the migrate method
  • add openupgradelib to the external dependencies of the manifest
• change the version of the module accordingly

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If it's relevant, the same could be done for pre/post-init hooks (I can write a separate issue for that).

[sbidoul]

+1, good idea

[blaggacao]

+1, very nice! I haven't implemented bob template yet, but it's on the road-map and I'd love such feature.