Changes between Version 72 and Version 73 of BackwardsIncompatibleChanges


Ignore:
Timestamp:
01/28/2007 07:11:58 PM (8 years ago)
Author:
adrian
Comment:

Added "Changed prepopulate_from to be defined in the Admin class, not database field classes"

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  • BackwardsIncompatibleChanges

    v72 v73  
    4040 * September 27, 2006: [http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#RemovedENABLE_PSYCOsetting Removed ENABLE_PSYCO setting]
    4141 * January 16, 2007: [http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#ChangedAdmin.manageroptiontomoreflexiblehook Changed Admin.manager option to more flexible hook]
     42 * January 28, 2007: [http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#Changedprepopulate_fromtobedefinedintheAdminclassnotdatabasefieldclasses Changed prepopulate_from to be defined in the Admin class, not database field classes]
    4243
    4344== Moved mod_python handler ==
     
    610611
    611612Note that this change was made to the NewformsAdminBranch branch, which is scheduled to merge to trunk by January 31. The change will not be made to trunk until that branch is merged to trunk.
     613
     614== Changed prepopulate_from to be defined in the Admin class, not database field classes ==
     615
     616As of [4446], the {{{prepopulate_from}}} option to database fields no longer exists. It's been discontinued in favor of the new {{{prepopulated_fields}}} option on {{{class Admin}}}. The new {{{prepopulated_fields}}} option, if given, should be a dictionary mapping field names to lists/tuples of field names. Here's an example comparing old syntax and new syntax:
     617
     618{{{
     619#!python
     620
     621# OLD:
     622class MyModel(models.Model):
     623    first_name = models.CharField(maxlength=30)
     624    last_name = models.CharField(maxlength=30)
     625    slug = models.CharField(maxlength=60, prepopulate_from=('first_name', 'last_name'))
     626
     627    class Admin:
     628        pass
     629
     630# NEW:
     631class MyModel(models.Model):
     632    first_name = models.CharField(maxlength=30)
     633    last_name = models.CharField(maxlength=30)
     634    slug = models.CharField(maxlength=60, prepopulate_from=('first_name', 'last_name'))
     635
     636    class Admin:
     637        prepopulated_fields = {'slug': ('first_name', 'last_name')}
     638}}}
     639
     640Note that this change was made to the NewformsAdminBranch branch, which is scheduled to merge to trunk by January 31. The change will not be made to trunk until that branch is merged to trunk.
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