Changes between Version 3 and Version 4 of SchemaEvolutionDesign


Ignore:
Timestamp:
03/09/2012 03:49:49 PM (3 years ago)
Author:
Joe Tennies
Comment:

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  • SchemaEvolutionDesign

    v3 v4  
    3131* Store revision number of tables
    3232* Store updates as python scripts
    33 * Reverse migrations? (from version 6 to version 4)
    3433* Modify database schemas (Will require updates to database API)
    3534  * Add columns
     
    5150  * Detect that data may be lost
    5251
    53 == Non-Goals ==
     52=== Non-Goals ===
    5453
    5554* Autodetection of changes
    5655  * This should be left for external tools like South or nashvegas to do
     56* Reverse migrations? (from version 6 to version 4)
     57
     58= Code Design =
     59
     60== Signals ==
     61
     62=== pre_migration ===
     63
     64Parameters:
     65''app'' - the app to be migrated as a string
     66''return_value''' - class that has a function to cancel the migration???
     67
     68Sent just before starting running migrations for an app.
     69
     70=== post migration ===
     71
     72Parameters:
     73''app'' - the app to be migrated as a string
     74
     75Sent just after migration successfully finishes for an app. Note that if the migrations fail in the middle of executing, this will not get called.
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