包含图像、文件和标签的模型的夹具数据

Posted 2023-02-23

【中文标题】包含图像、文件和标签的模型的夹具数据

【英文标题】：Fixtures data for model containing images, files and tags

【发布时间】：2021-02-21 15:52:52

【问题描述】：

我正在使用 Djano 3.1、Python 3.6、easy-thumbnails 2.7 和 django-taggit 1.3

我想为我的模型创建一个夹具数据文件。

这是我的（简化的）模型：

myapp/models.py

class Post(models.Model):
    featured_image = ThumbnailerImageField(upload_to='uploads/post/featured_image', blank=True, null=True) 
    content = models.CharField(max_text=1000, null=False, blank=False)
    tags = TaggableManager()
    

class PostFileAttachment(models.Model):
    post = models.ForeignKey(Post, related_name='attachments', on_delete = mFixtures data for model containing images and filesodels.CASCADE)
    file = models.FileField(upload_to="uploads/post/attachments") 


class PostImageGallery(models.Model):
    post = models.ForeignKey(Post, related_name='pictures', on_delete = models.CASCADE)
    description = models.CharField(max_length=100, blank=True, null=True, default='')
    image = models.ImageField(upload_to='uploads/blogpost/gallery')

myapp/fixtures/sample_data.json

[
    
      "model": "myapp.Post",
      "pk": 1,
      "fields": 
        "featured_image": ???
        "content": "This is where the content goes"
        "tags": ???
      
    ,
    
      "model": "myapp.PostFileAttachment",
      "pk": 1,
      "fields": 
          "post": 1
          "file": ???
      
    ,
    
      "model": "myapp.PostImageGallery",
      "pk": 1,
      "fields": 
         "post": 1
         "description": "File description",
         "image": ???
      
    
]

如何在我的 JSON 设备文件中指定文件？

【参考方案1】：

如果您尝试通过admin 接口保存Post 与图像，例如image.png，然后您查看数据库，您会发现帖子的图像是以其相对路径保存的：uploads/post/featured_image/image.png，所以在您的夹具中，您需要指定该路径。

在您的 myapp/fixtures/sample_data.json 夹具文件中应该是这样的

[
    
      "model": "myapp.Post",
      "pk": 1,
      "fields": 
        "featured_image": "uploads/post/featured_image/FEATURED_IMAGE.EXT",
        "content": "This is where the content goes",
      
    ,
    
      "model": "myapp.PostFileAttachment",
      "pk": 1,
      "fields": 
          "post": 1,
          "file": "uploads/post/attachments/ATTACHMENT.EXT",
      
    ,
    
      "model": "myapp.PostImageGallery",
      "pk": 1,
      "fields": 
         "post": 1,
         "description": "File description",
         "image": "uploads/blogpost/gallery/IMAGE.EXT",
      
    
]

【讨论】：

这只是将文件名的字符串加载到数据库中

fixtures 用于预填充数据库 (docs.djangoproject.com/en/3.1/howto/initial-data)，然后可以手动移动文件，甚至可以使用自定义命令更好地移动文件。

看看这个包它可能有用pypi.org/project/django-media-fixtures