Django-REST-framework 中的 Serializer 类中的 pk 字段是什么?
我假设它是主键,但名称“pk”是保留词吗?Serializer 类如何知道这是 Snippet 模型的主键?
我在名为“pk”的代码段模型中看不到任何字段。
class SnippetSerializer(serializers.Serializer):
pk = serializers.Field() # Note: `Field` is an untyped read-only field.
title = serializers.CharField(required=False,
max_length=100)
code = serializers.CharField(widget=widgets.Textarea,
max_length=100000)
linenos = serializers.BooleanField(required=False)
language = serializers.ChoiceField(choices=LANGUAGE_CHOICES,
default='python')
style = serializers.ChoiceField(choices=STYLE_CHOICES,
default='friendly')
....class SnippetSeralizer 继续
class Snippet(models.Model):
created = models.DateTimeField(auto_now_add=True)
title = models.CharField(max_length=100, blank=True, default='')
code = models.TextField()
linenos = models.BooleanField(default=False)
language = models.CharField(choices=LANGUAGE_CHOICES,
default='python',
max_length=100)
style = models.CharField(choices=STYLE_CHOICES,
default='friendly',
max_length=100)
class Meta:
ordering = ('created',)