Django的tastypie外键的麻烦

Question

我有一个桩模型和postImage型号：

class PostImage(models.Model): 
    post = models.ForeignKey(Post, related_name="images") 
    # @@@@ figure out a way to have image folders per user... 
    image = models.ImageField(upload_to='images') 
    description = models.CharField(max_length=100) 
    order = models.IntegerField() 

我创建tastypie资源两种：

class PostImageResource(ModelResource): 
    class Meta: 
     queryset = PostImage.objects.all() 
     resource_name = 'postImage' 


class PostResource(ModelResource): 
    images = fields.ForeignKey(PostImageResource, 'images', full=True) 
    class Meta: 
     queryset = Post.objects.all() 
     resource_name = 'post' 

当我尝试浏览api/v1/post/?format=json我得到出现以下错误：

The object '' has an empty attribute 'image' and doesn't allow a default or null value. 

我还没有任何PostImages呢。

如果我摆脱images = fields.foreignKey线PostResource，它的工作原理。如果我浏览到api/v1/postImage/?format=json，则不显示错误，只是一个空集合。

Answer 1

试试这个：

class PostResource(ModelResource): 
    images = fields.OneToManyField(PostImageResource, 'images', full=True) 
    class Meta: 
     queryset = Post.objects.all() 
     resource_name = 'post' 

------- ------- EDITED

嗯......

在你的模型：

class PostImage(models.Model): 
    post = models.ForeignKey(Post, related_name="images") 
    image = models.ImageField(upload_to='images', null=True, blank=True) 
    description = models.CharField(max_length=100) 
    order = models.IntegerField() 

注意null = True且空白= True。