DropArea shows "undefined" while editing a ModelForm without input_file inputed

[yanhuixie]

Yes, I have just change input_file of Example Model to "blank=True, null=True".

class Example(models.Model):
    fs = FileSystemStorage(location=settings.MEDIA_ROOT)

    title = models.CharField(max_length=255)
    input_file = models.FileField(max_length=255, upload_to="example", storage=fs, blank=True, null=True)

    def __str__(self):
        return self.title

Because we make it not required that the file to be uploaded.

    const getInitialFiles = fieldName => {
      const data = getInputValue(getUploadsFieldName(fieldName, getPrefix()));
      if (!data) {
        return [];
      }
      return JSON.parse(data);
    };

if (!data) { I think It (!data) could be the cause of the problem. In this scenario, the "data" is [{}], that an empty object within an empty array.

[mbraak]

I'll have a look

[mbraak]

I added a pr with a fix: #892. I plan to merge the pr soon.

[mbraak]

This is fixed in version 3.7.0