Changes between Version 19 and Version 20 of GSOC2012/DatabaseMigration/Userguildlines


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Timestamp:
08/20/12 17:52:11 (9 years ago)
Author:
anubhav
Comment:

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  • GSOC2012/DatabaseMigration/Userguildlines

    v19 v20  
    22== Comparison Script ==
    33Before using the comparison script , the user of the script should have 2 eden apps , one the containing the old database schema from which the data is to migrated and one with the new database schema
    4 
    5 The apps_db_comparison script compares the db schema of 2 eden apps to tell the differences
    6 Just run the script with 3 necessary arguments in this order
    7 1.WEB2PY_PATH
    8 2.OLD_APP
    9 3.NEW_APP
    10 i.e python applications/eden/static/scripts/Database_migration/apps_db_comparison.py /home/web2py eden_old eden_new
     4[[br]]
     5The apps_db_comparison script compares the db schema of 2 eden apps to tell the differences[[br]]
     6Just run the script with 3 necessary arguments in this order[[br]]
     71.WEB2PY_PATH[[br]]
     82.OLD_APP[[br]]
     93.NEW_APP[[br]]
     10i.e python applications/eden/static/scripts/Database_migration/apps_db_comparison.py /home/web2py eden_old eden_new[[br]]
    1111
    1212This script also has an test script that makes 2 new web2py with apps to compare
    13 Just run the test script to compare
    14 i.e python applications/eden/tests/dbmigration TestScript.py
     13Just run the test script to compare[[br]]
     14i.e python applications/eden/tests/dbmigration/TestScript.py[[br]]
    1515
    16 The detected changes are displayed , then using the changes displayed user could figure out the what kind of migration is needed , like if there is a field appeared in the new schema which has the same properties as the one disappeared from the old schema then the migration function for the renaming a field can be called .
    17 
     16The detected changes are displayed , then using the changes displayed user could figure out the what kind of migration is needed , like if there is a field appeared in the new schema which has the same properties as the one disappeared from the old schema then the migration function for the renaming a field can be called . [[br]]
     17[[br]]
    1818Also the change in the properties of the fields are detected , the migration function for those can be called too .
    1919