Question

我正在使用django和Python，在我的models.py中我使用属性图像声明了一个Tournament模型，这是保存方法：

import datetime
from django.db import models
from django.utils import timezone
from tinymce.models import HTMLField
from rules.models import Rule
from news.models import Tag, News
from courts.models import Court
from news.models import replace_spaces
from datetime import datetime
from sorl.thumbnail import ImageField, get_thumbnail
from PIL import Image
from django.core.files.storage import default_storage as storage
from django.conf import settings

class Tournament(models.Model):
    name = models.CharField(max_length=50, default='', verbose_name='Nombre')
    name_url = models.CharField(max_length=200, default='', editable=False)
    inscription_opening_date = models.DateField('fecha de apertura de inscripcion')
    inscription_closing_date = models.DateField('fecha de cierre de inscripcion')
    tournament_starting_date = models.DateField('fecha de inicio del torneo')
    tournament_ending_date = models.DateField('fecha de finalizacion del torneo')
    description = HTMLField(default='', verbose_name='Descripcion del Torneo', blank=True)
    image = ImageField(upload_to='tournamentpic', verbose_name='Imagen')
    situation = models.ForeignKey(TournamentSituation, default='', verbose_name='Estado del Torneo')
    tournament_format = models.ForeignKey(TournamentFormat, default='', verbose_name='Formato del Torneo')
    regulation = models.ForeignKey(Rule, default='', verbose_name='Reglamento')
    tournament_type = models.ForeignKey(TournamentType, default='', verbose_name='Tipo de Torneo')
    tournament_category = models.ForeignKey(TournamentCategory, default='', verbose_name='Categoria de Torneo')
    quota = models.IntegerField(default=0, verbose_name='Cupos')
    tag = models.ManyToManyField(Tag)
    price = models.DecimalField(default=0, max_digits=6, decimal_places=2, blank=True)
    zones = models.IntegerField(default=0, verbose_name='Zonas', blank=True)
    KNOCKOUT_OPENING_CHOICES = (
        ('64', 'Ronda de 128'),
        ('32', 'Ronda de 64'),
        ('16', 'Ronda de 32'),
        ('8', 'Octavos de Final'),
        ('4', 'Cuartos de Final'),
        ('2', 'Semifinal'),
    )
    knockout_opening_round = models.CharField(max_length=2, verbose_name='Instancia de Inicio de Llaves', choices=KNOCKOUT_OPENING_CHOICES, default='32', blank=True)
    singles = models.IntegerField(default=0, verbose_name='Numero de Singles', blank=True)
    doubles = models.IntegerField(default=0, verbose_name='Numero de Doubles', blank=True)
    photo_full_size = models.CharField(max_length=255, blank=True, editable=False)



def save(self):
    self.name_url = replace_spaces(self.name)
    sizes = {'full': {'height': 415, 'width': 620},}

    extension = self.image.name.rsplit('.', 1)[1]  # the file extension
    now = datetime.now()
    date = now.strftime("%H-%M-%S-%d-%m-%Y")
    self.image.name = date +'.png'
    filename = date

    super(Tournament, self).save()
    default_format = 'PNG'
    im = Image.open(self.image)

    if extension not in ['jpg', 'jpeg', 'gif', 'png']: sys.exit()

    new_size = im.resize((sizes['full']['width'], sizes['full']['height']), Image.ANTIALIAS)
    medname = "-" + str(sizes['full']['width']) + "x" + str(sizes['full']['height']) + ".png"
    thumb_path = UPLOAD_TO + filename + medname
    fh = storage.open(thumb_path, "w")
    new_size.save(fh,default_format)
    fh.close()
    self.photo_full_size = thumb_path

当我在管理员中保存新锦标赛时，我收到以下错误：

cannot identify image file <ImageFieldFile: 16-16-58-19-06-2015.png>

我将照片和媒体文件上传到S3。奇怪的是，在另一个模型中，使用完全相同的配置，它可以完美运行！这是另一个模型：

from django.db import models
from tinymce.models import HTMLField
from datetime import datetime
from sorl.thumbnail import ImageField, get_thumbnail
from PIL import Image
from django.core.files.storage import default_storage as storage
from django.conf import settings

import sys

MEDIA_URL = getattr(settings, 'MEDIA_URL')

UPLOAD_TO = 'aboutpic/'

class Name(models.Model):
    name = models.CharField(max_length=20, default='', verbose_name='Nombre')
    lastname = models.CharField(max_length=20, default='', verbose_name='Apellido')

    def __str__(self):            
        return self.name + ' ' + self.lastname

class About(models.Model):
    image = ImageField(upload_to='aboutpic', verbose_name='Imagen de Portada')
    introduction = HTMLField(default='', verbose_name='Cuerpo de Noticia', blank=True)
    creation_date = models.DateField('fecha de publicacion', default=datetime.now(), editable=False)
    names = models.ManyToManyField(Name)
    photo_full_size = models.CharField(max_length=255, blank=True, editable=False)

    def save(self):
        sizes = {'full': {'height': 415, 'width': 620},}

        extension = self.image.name.rsplit('.', 1)[1]  # the file extension
        now = datetime.now()
        date = now.strftime("%H-%M-%S-%d-%m-%Y")
        self.image.name = date +'.png'
        filename = date

        super(About, self).save()
        print self.image
        default_format = 'PNG'
        im = Image.open(self.image)
        if extension not in ['jpg', 'jpeg', 'gif', 'png']: sys.exit()

        new_size = im.resize((sizes['full']['width'], sizes['full']['height']), Image.ANTIALIAS)
        medname = "-" + str(sizes['full']['width']) + "x" + str(sizes['full']['height']) + ".png"
        thumb_path = UPLOAD_TO + filename + medname
        fh = storage.open(thumb_path, "w")
        new_size.save(fh,default_format)
        fh.close()
        self.photo_full_size = thumb_path

        super(About, self).save()

    def get_full_size(self):
        return MEDIA_URL + self.photo_full_size

Answer 1

这是评论作为实际答案：

在 admin.py 中：

def response_change(self, request, obj): 
    obj.save()  
    return HttpResponseRedirect(
        reverse('admin:tournaments_tournament_change', args=(obj.id,))
    ) 

def response_add(self, request, obj, post_url_continue=None): 
    obj.save()  
    return HttpResponseRedirect(
        reverse('admin:tournaments_tournament_change', args=(obj.id,))
    )

无法识别图像文件ImageFieldFile

1 个答案: