Django rest 框架从 API Create 表单中删除一个字段

Question

我有一个与此模型相关的模型和视图集， 这是我的代码：

class EMAILTemplate(models.Model):
""" Message SMS Template """
user = models.ForeignKey(User, on_delete=models.CASCADE)
name = models.CharField(max_length=255)
body = models.TextField()
tokens = models.TextField()
created = models.DateTimeField(auto_now_add=True)
def save(self, *args, **kwargs):
self.tokens = ",".join(re.findall(r'{{s*(.*?)s*}}', self.body))
super().save(*args, **kwargs)

我不希望字段标记出现在 Django rest 框架中创建或编辑表单中的创建表单中，因为正如您所看到的，它将从 body 字段中提取。 但我想让这个字段查看单个模型或模型列表。

这是我的模型序列化器：

class EmailTemplateSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = EMAILTemplate
fields = ('name', 'body', 'user', 'tokens')

Answer 1

您可以将tokens指定为只读字段：

class EmailTemplateSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = EMAILTemplate
fields = ('name', 'body', 'user', 'tokens')
read_only_fields = ('tokens',)

Answer 2

可以覆盖当前的to_representation方法

class EmailTemplateSerializer(serializers.HyperlinkedModelSerializer):
def to_representation(self, obj):
try:
if self.context['view'].action in ['list', 'detail']:
# get the original representation
ret = super(serializers.HyperlinkedModelSerializer, self).to_representation(obj)
# remove 'tokens' field
ret.pop('tokens')
return ret
except KeyError:
return super(serializers.HyperlinkedModelSerializer, self).to_representation(obj)
return super(serializers.HyperlinkedModelSerializer, self).to_representation(obj)