django form

ModelForm的继承者有两种保存数据方式:

一:创建新的数据:

f = ArticleForm(request.POST)
new_article = f.save()

二:更新数据库:
a = Article.objects.get(pk=1)
f = ArticleForm(request.POST, instance=a)
f.save()


保存时候的commit选项:

f = AuthorForm(request.POST)
new_author = f.save(commit=False)
new_author.some_field = ’some_value’
new_author.save()
f.save_m2m()


Calling save_m2m() is only required if you use save(commit=False).
两种安全的方式:
class AuthorForm(ModelForm):
  class Meta:
    model = Author
    fields = ’__all__’

class PartialAuthorForm(ModelForm):
  class Meta:
    model = Author
    exclude = [’title’]

For example if you wanted to customize the wording of all user facing strings for the name field:
from django.utils.translation import ugettext_lazy as _

class AuthorForm(ModelForm):
  class Meta:
    model = Author
    fields = (’name’, ’title’, ’birth_date’)
    labels = {
      ’name’: _(’Writer’),
      }
    help_texts = {
      ’name’: _(’Some useful help text.’),
      }
    error_messages = {
      ’name’: {
        ’max_length’: _("This writer’s name is too long."),
      },
}

For technical reasons, a subclass cannot inherit from both a ModelForm and a Form simultaneously.

 

posted on 2014-07-25 17:53  颓废的悠然  阅读(230)  评论(0编辑  收藏  举报

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