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70 lines
2.1 KiB
70 lines
2.1 KiB
# -*- coding:utf-8 -*-
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import os
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import time
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import hashlib
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from django.db import models
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from PIL import Image
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from djing.settings import BASE_DIR
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class Photo(models.Model):
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image = models.ImageField(width_field='wdth', height_field='heigt')
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wdth = models.PositiveSmallIntegerField(null=True, blank=True, editable=False, default="759")
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heigt = models.PositiveSmallIntegerField(null=True, blank=True, editable=False)
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def __str__(self):
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return "{0}".format(self.image)
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def big(self):
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return self.image.url
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def min(self):
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pth = self.image.url.split('/')[-1:][0]
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return "/media/min/%s" % pth
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def save(self, *args, **kwargs):
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if not self.image:
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return
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super(Photo, self).save(*args, **kwargs)
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im = Image.open(self.image.path)
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im.thumbnail((759, 759), Image.ANTIALIAS)
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hs = hashlib.md5(str(time.time()).encode()).hexdigest()
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ext = self.image.path.split('.')[1:][0]
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path = "%s/media" % BASE_DIR
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fname = "%s/%s.%s" % (path, hs, ext)
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if not os.path.exists(path):
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os.makedirs(path)
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if not os.path.exists(path + '/min'):
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os.makedirs(path + '/min')
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im.save(fname)
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os.remove(self.image.path)
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self.image = "%s.%s" % (hs, ext)
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super(Photo, self).save(*args, **kwargs)
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# class Meta:
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# unique_together = (('image',),)
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def resize_image(sender, instance, **kwargs):
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if not kwargs['created']:
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im = Image.open(instance.image.path)
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im.thumbnail((200, 121), Image.ANTIALIAS)
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pth = instance.image.path.split('/')[-1:][0]
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fullpath = "%s/media/min/%s" % (BASE_DIR, pth)
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im.save(fullpath)
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def post_delete_photo(sender, instance, **kwargs):
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min_fname = instance.image.path.split('/')[-1:][0]
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try:
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os.remove('%s/media/min/%s' % (BASE_DIR, min_fname))
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os.remove(instance.image.path)
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except OSError:
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pass
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models.signals.post_save.connect(resize_image, sender=Photo)
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models.signals.post_delete.connect(post_delete_photo, sender=Photo)
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