None of the answers clearly describe the root of the problem. Normally in the db you can make a field null=True, unique=True and it will work… because NULL != NULL. So each blank value is still considered unique. But unfortunately for CharFields Django will save an empty string “” (because when you submit a form … Read more
Assuming the value is based on ‘request’ you should use this: class MyModelAdmin(admin.ModelAdmin): def get_form(self, request, obj=None, **kwargs): form = super(MyModelAdmin, self).get_form(request, obj, **kwargs) form.base_fields[‘my_field_name’].initial=”abcd” return form
If you are using autocomplete_fields for a ManyToManyField on ‘self’, this example will exclude the current object. Get the current object’s id by overriding get_form: field_for_autocomplete = None def get_form(self, request, obj=None, **kwargs): if obj: self.field_for_autocomplete = obj.pk return super(MyAdmin, self).get_form(request, obj, **kwargs) Next, override get_search_results. Modify the queryset only for your model’s autocomplete URI: … Read more
I think there is a more easy way to do that: Guest we have the same problem of Blog-Post blog/models.py: Class Blog(models.Model): … #fields like autor, title, stuff.. … class Post(models.Model): … #fields like blog, title, stuff.. … approved = models.BooleanField(default=False) approved_by = models.ForeignKey(User) class Meta: permissions = ( (“can_approve_post”, “Can approve post”), ) And … Read more
Had this question myself today. For completeness, here is the documentation that currently exists: https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#modelforms-overriding-default-fields And an excerpt from django/forms/models.py: class ModelFormOptions: def __init__(self, options=None): self.model = getattr(options, ‘model’, None) self.fields = getattr(options, ‘fields’, None) self.exclude = getattr(options, ‘exclude’, None) self.widgets = getattr(options, ‘widgets’, None) self.localized_fields = getattr(options, ‘localized_fields’, None) self.labels = getattr(options, ‘labels’, None) … Read more
I found this solution which solves the whole thing quite elegantly I think (not my code): import datetime YEAR_CHOICES = [] for r in range(1980, (datetime.datetime.now().year+1)): YEAR_CHOICES.append((r,r)) year = models.IntegerField(_(‘year’), choices=YEAR_CHOICES, default=datetime.datetime.now().year) Edit the range start to extend the list 🙂
This is how I changed Django 1.0.2 to add ‘view’ permissions. Sorry there is no diff available. [X] 1. Added ‘view’ to default permission list #./contrib/auth/management/__init__.py def _get_all_permissions(opts): “Returns (codename, name) for all permissions in the given opts.” perms = [] for action in (‘add’, ‘change’, ‘delete’, ‘view’): perms.append((_get_permission_codename(action, opts), u’Can %s %s’ % (action, … Read more
You need to override get_readonly_fields() method of your admin class. # admin.py class TeamAdmin(admin.ModelAdmin) … def get_readonly_fields(self, request, obj=None): if obj: #This is the case when obj is already created i.e. it’s an edit return [‘players’] else: return []
as with the other admin options, you need to use __ for foreign keys e.g. search_fields = [‘id’, ‘transaction__id’]
http://docs.djangoproject.com/en/dev/ref/contrib/admin/#reversing-admin-urls obj = coconut_transportation.swallow.objects.all()[34] # list url url = reverse(“admin:coconut_transportation_swallow_changelist”) # change url url = reverse(“admin:coconut_transportation_swallow_change”, args=[obj.id]) # add url url = reverse(“admin:coconut_transportation_swallow_add”)