mysterioustrousers / mtmigration Goto Github PK

I came across the following scenario:

I have a cache file that I would like to flush on every app update. With the current implementation MTMigration it currently looks like:

[MTMigration applicationUpdateBlock:^{
    flushCache();
}];

if (isCacheAvailable) {    // (1)
    loadCache();
} else {
    writeCache();
}

However, unless a synchronization method is introduced, there is no guarantee that the cache file will be flushed before (1).

Adding a hasAppBeenUpdated property would allow the synchronous execution of code in an easier way:

if (isCacheAvailable && 
    [MTMigration hasAppBeenUpdated] == NO) {
    loadCache();
} else {
    writeCache();
}

Let me know what you think, @pwightman

=====================Cartfile ====================
github "mysterioustrousers/MTMigration"

=====================Run "carthage update" ====================
*** Fetching MTMigration
*** Checking out MTMigration at "0.0.5"
*** xcodebuild output can be found in /var/folders/m9/wv055crx2l1c8ttcy2vtl8_40000gn/T/carthage-xcodebuild.lFesDL.log
*** Skipped building MTMigration due to the error:
Dependency "MTMigration" has no shared framework schemes

We appreciate the work but is this repo still maintained? We needed Carthage support which isn't available here. So we refactored stuff and moved to Swift 4. Feel free to give it a try and make pull requests

Sorry for my english.

I'm using [MTMigration applicationUpdateBlock]. I want to indicate migrating progress to user. I think when fixed by additional completionBlock. Are there plans to add such a function?

A common use case for me is to distinguish new installs from updates. Often I need to correct something in the database of old users, but don't touch it for fresh installs (because it's fixed out of the box for them).

Perhaps something like this would make sense:

[MTMigration migrateToVersion:@"1.1" block:^{
    if([[MTMigration firstVersionKnownOnThisDevice] isEqualToString:@"1.1"]) {
        // Treat new users differently
    }
    [obj doSomeDataStuff];
}];

I try to avoid this situation; if often happens when you ship some initial data with the app and the app doesn't sync with a server.

Thanks !

It would be handy to have a method where you can set a block that is executed on every Application Update. So everytime the version string of the application changes.
This would be handy to clean up the application or do other stuff that needs to be done on every update.

I need this functionality. So I'll implement it.

Do you think it would be worth that this functionality is part of the repo?

Hello, I've been using MTMigration for years (and contributed to an early version) but now that Swift Package Manager exists I would very much like a SwiftPM version instead of integrating it with CocoaPods.

Until then I have ported a subset to Swift as a drop-in replacement and made it into a Swift Package: https://github.com/Clafou/Migration

If i need to migrate from lets say 1.0 to 1.1 and i would use your method migrateToVersion:block: with the parameter @"1.1" for the version, than the block would be executed if the current Version is 1.1 no matter if there was an old version installed. And the block would get executed if the app version is higher. For example if the initial install of the user is 2.0 than the block would get executed.

Please correct me if i am wrong.

Best regards.

When installing via CocoaPods, I'm not getting the new applicationUpdateBlock:

Why not just run the block in the thread the method was called on?