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初始值我有一個通用的關係的模式是這樣的:形式的__init__的模型與通用的關係
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE, blank=True, null=True)
object_id = models.PositiveIntegerField(blank=True, null=True)
content_object = GenericForeignKey('content_type', 'object_id')
要爲我修改形式向用戶的生活更輕鬆。這個想法是有一個領域的選擇,而不是多個。爲此,我已經將字段合併到了表單的init()中。
def __init__(self, *args, **kwargs):
super(AdminTaskForm, self).__init__(*args, **kwargs)
# combine object_type and object_id into a single 'generic_obj' field
# getall the objects that we want the user to be able to choose from
available_objects = list(Event.objects.all())
available_objects += list(Contest.objects.all())
# now create our list of choices for the <select> field
object_choices = []
for obj in available_objects:
type_id = ContentType.objects.get_for_model(obj.__class__).id
obj_id = obj.id
form_value = "type:%s-id:%s" % (type_id, obj_id) # e.g."type:12-id:3"
display_text = str(obj)
object_choices.append([form_value, display_text])
self.fields['content_object'].choices = object_choices
直到現在一切工作正常,但現在我必須爲content_object字段提供初始值。
我加入這個代碼的init(),但它不工作:
initial = kwargs.get('initial')
if initial:
if initial['content_object']:
object = initial['content_object']
object_id = object.id
object_type = ContentType.objects.get_for_model(object).id
form_value = "type:%s-id:%s" % (object_type, object_id)
self.fields['content_object'].initial = form_value
爲什麼我不能設置初始化的內部初始值有什麼建議?謝謝!
P.S.調試輸出查找我確定,但首先沒有設置。
print(self.fields['content_object'].choices) --> [['type:32-id:10050', 'Value1'], ['type:32-id:10056', 'Value2']]
print(form_value) --> type:32-id:10056