Remove requirement for image dimensions in API

[llamafilm]

NetBox version

v4.0.8

Feature type

Change to existing functionality

Proposed functionality

When uploading an image attachment via API, it should not require image_height and image_width fields. These should be calculated automatically, as they are when uploading using the GUI. Actually this already works, if you provide incorrect values (any integer) they will be ignored, and Netbox figures out the correct dimensions.

As an example, I'd like to use code like this:

files = { 'image': open(filename, 'rb') }
payload = {
    'name': filename,
    'object_id': 454,
    'object_type': 'dcim.site'
}
url = f'{base_url}/api/extras/image-attachments/'
req = requests.post(url, headers=headers, files=files, data=payload)

This currently fails with 400: {"image_height":["This field is required."],"image_width":["This field is required."]}

Use case

Calculating image dimensions requires extra work, and Netbox is already capable of doing this automatically, as it does when you upload using the GUI.

Database changes

none

External dependencies

No response

[llamafilm]

By the way, the same operation can be done in python without specifying dimensions:

from django.contrib.contenttypes.models import ContentType
from django.core.files.base import File
i = ImageAttachment(
    object_type=ContentType.objects.get(app_label='dcim', model='location'),
    object_id=14588,
    image=File(open('/tmp/image.png', 'rb')),
    name='my file'
)
i.full_clean()
i.save()

[jeremystretch]

Reclassifying this as a bug, as those fields should not be required.