from rest_framework import routers, serializers, viewsets
import base64
from .models import upload
import zipfile
import os
class Base64ImageField(serializers.ImageField):
"""
A Django REST framework field for handling image-uploads through raw post
data.
It uses base64 for encoding and decoding the contents of the file.
Heavily based on
https://github.com/tomchristie/django-rest-framework/pull/1268
Updated for Django REST framework 3.
"""
def to_internal_value(self, data):
from django.core.files.base import ContentFile
import base64
import six
import uuid
# Check if this is a base64 string
if isinstance(data, six.string_types):
# Check if the base64 string is in the "data:" format
if 'data:' in data and ';base64,' in data:
# Break out the header from the base64 content
header, data = data.split(';base64,')
# Try to decode the file. Return validation error if it fails.
try:
decoded_file = base64.b64decode(data)
except TypeError:
self.fail('invalid_image')
# Generate file name:
file_name = str(uuid.uuid4())[:12]
# 12 characters are more than enough.
# Get the file name extension:
file_extension = self
.get_file_extension(file_name, decoded_file)
complete_file_name = "%s.%s" % (file_name, file_extension, )
data = ContentFile(decoded_file, name=complete_file_name)
return super(Base64ImageField, self).to_internal_value(data)
def get_file_extension(self, file_name, decoded_file):
import imghdr
extension = imghdr.what(file_name, decoded_file)
extension = "zip" if extension == "jpeg" else extension #<--error
line---> i am converting Base 64 data into zip file
#examplezip.write(serializers.ImageField,compress_type = zipfile.ZIP_DEFLATED)
#examplezip.close()
return extension
class uploadSerializers(serializers.ModelSerializer):
image=Base64ImageField(
max_length=None, use_url=True,
)
#image = serializers.ImageField(max_length=None,use_url=True)
class Meta:
model = upload
fields = ('id','image','user')
extra_kwargs = {'user': {'required': False}}
On Thursday, April 30, 2020 at 2:05:25 PM UTC+5:30, yashwanth balanagu
wrote:
>
> {"image":["File extension “zip” is not allowed. Allowed extensions are:
> bmp, dib, gif, tif, tiff, jfif, jpe, jpg, jpeg, pbm, pgm, ppm, pnm, png,
> apng, blp, bufr, cur, pcx, dcx, dds, ps, eps, fit, fits, fli, flc, ftc,
> ftu, gbr, grib, h5, hdf, jp2, j2k, jpc, jpf, jpx, j2c, icns, ico, im, iim,
> mpg, mpeg, mpo, msp, palm, pcd, pdf, pxr, psd, bw, rgb, rgba, sgi, ras,
> tga, icb, vda, vst, webp, wmf, emf, xbm, xpm."]}
>
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