Implement migrations

[tejainece]

Implement migrations

[tejainece]

Started an experimental implementation here: https://github.com/Jaguar-dart/jaguar_orm/commit/29f27d971eae111497c21fceceef26fb30b2abc1

[tejainece]

The plan is to create a snapshot (an xml file) for each changes. Store these snapshot files.

Diff the snapshot files to migrate up or down.

[tejainece]

Blocked by https://github.com/Jaguar-dart/jaguar_orm/issues/19

[hjJunior]

Hey, what do think about create a __migrations__ table on schema to manage the migrations executed instead xml files?

This approach is used in many frameworks, if u agree I think that I can help on it!

[tejainece]

That definitely sounds nice!

[tejainece]

@hjjunior Are you still planning to work on this issue?

[hjJunior]

I was :/ but I faced a problem that go against the way is used generator on project

[tejainece]

Can you please explain more?

[hjJunior]

oc! well, I was planing to create a migration when the flutter pub run build_runner build, but I'll need to check if changed and/or what changed on database schema, and late it, if required create a new file/a new migration version with the diffs I'd like to follow something like the room migrations but a little more automatic

[flycash]

@hjJunior Do you made any progress? Or are you still working on this?

[hjJunior]

Sorry guys, when I was planning to start, I just figure out another one, that already do this, take a look on Floor

[devjeff]

The Floor approach looks nice, but it is still SQFlite specific. A migration implementation directly in the jarguar orm package would provide a possibility to handle DB migrations independently of the used database.

[SebastienSCochet]

Is there any update about this ? Any example of a simple implementation ? Thank you for your hard work