如何使用动态设置子目录的Django模型中设置Image Field

发布于 2025-02-12 07:10:18 字数 1090 浏览 2 评论 0原文

我需要将照片上传到特定目录。

我有以下模型代码。

@reversion.register()
    class Student(BaseModel):
    uuid = models.UUIDField(default=uuid.uuid4, verbose_name=_("Unique Identifier"), unique=True)
    user = models.OneToOneField(User, on_delete=models.PROTECT, db_index=True, verbose_name=_("User"))
    photo = models.ImageField(upload_to="student/", null=True, blank=True, verbose_name=_("Photo"))
    std_status = models.IntegerField(choices=STD_STATUS, default=1, verbose_name=_("Stu Sta"))
    std_no = models.AutoField(primary_key=True, verbose_name=_("Stu Num"))
    name = models.CharField(max_length=100, db_index=True, verbose_name=_("Name"))
    surname = models.CharField(max_length=100, db_index=True, verbose_name=_("Surname"))

对于照片线。它将照片上传到学生/目录。但是我需要拥有带有用户名和日期的子目录。喜欢“ student/jenifer_argon/2019223/2022/07/01” 我可以设置“ student/” 目录，但是用户名和std_no和日期应动态设置。 student/user/std_no/date 用户和std_no应该来自创建运行时的模型。我该怎么做？

就像;一切都将处于相同的形式。但是，将首先设置STD_NO和用户，而不是用于设置上传的DIDETORY定义，并将图像上传到该目录。

原文

I need to upload photos to specific directories.

I have below model code.

@reversion.register()
    class Student(BaseModel):
    uuid = models.UUIDField(default=uuid.uuid4, verbose_name=_("Unique Identifier"), unique=True)
    user = models.OneToOneField(User, on_delete=models.PROTECT, db_index=True, verbose_name=_("User"))
    photo = models.ImageField(upload_to="student/", null=True, blank=True, verbose_name=_("Photo"))
    std_status = models.IntegerField(choices=STD_STATUS, default=1, verbose_name=_("Stu Sta"))
    std_no = models.AutoField(primary_key=True, verbose_name=_("Stu Num"))
    name = models.CharField(max_length=100, db_index=True, verbose_name=_("Name"))
    surname = models.CharField(max_length=100, db_index=True, verbose_name=_("Surname"))

For the photo line. It uploads photos to student/ directory. But i need to have subdirectories with User name and dates. Like "student/jenifer_argon/2019223/2022/07/01"
I can set "student/" directory but username and std_no and date should be dynamically set. student/user/std_no/date user and std_no should come from above model on creation runtime.
How can i do this?

It is like; everything will be on same form. But std_no and user will be set first than they will be used to set upload diretory definition and image will be uploaded to that directory.

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无需解释 2025-02-19 07:10:18

一个函数可以传递给 upload_to 通过实例和文件名，您可以使用这些路径来构建路径

from datetime import date

def student_photo_path(instance, filename):
    today = date.today()
    return 'student/{0}/{1}/{2}/{3}/{4}/{5}'.format(
        instance.user.username,
        instance.std_no,
        today.year,
        today.month,
        today.day,
        filename
    )


class Student(BaseModel):
    ...
    photo = models.ImageField(upload_to=student_photo_path, null=True, blank=True, verbose_name=_("Photo"))
   ...

A function can be passed to upload_to that is passed the instance and filename, you can construct your path using these

from datetime import date

def student_photo_path(instance, filename):
    today = date.today()
    return 'student/{0}/{1}/{2}/{3}/{4}/{5}'.format(
        instance.user.username,
        instance.std_no,
        today.year,
        today.month,
        today.day,
        filename
    )


class Student(BaseModel):
    ...
    photo = models.ImageField(upload_to=student_photo_path, null=True, blank=True, verbose_name=_("Photo"))
   ...

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