NameError: name 'ResidentialReference' is not defined [Django - ImageKit]

Question

出于某种原因，当我尝试将 ImageKit 应用到模型上以创建 ImageField 的缩略图时出现错误。我正在为 Django 使用 ImageKit 库，您可以找到 here

我的代码如下：

from django.db import models
from PIL import Image
import os
from django.contrib import admin
from imagekit.models import ImageSpecField
from imagekit.processors import ResizeToFill

# Create your models here.
class ResidentialReference(models.Model):
    image = models.ImageField(upload_to='images', blank="true",null="true")
    thumbnail = ImageSpecField(source='image',
                               processors=[ResizeToFill(100,50)],
                               format='JPEG',
                               options={'quality':60})

    title = models.CharField(max_length = 1000, default = 'Title here...' )
    postcode = models.TextField(max_length = 1000, default='Postcode here...')
    description = models.TextField(max_length = 12000, default = 'Technical Description here...')
    equipment = models.TextField(max_length = 1000, default = 'Equipment here...')
    output = models.TextField(max_length = 1000, default = 'Rated Output here...')
    partnership = models.TextField(max_length = 12000, default = 'Viessmann partnership details here...')



    def __unicode__(self):
        return self.title

    def create_thumb(self):
        residentialReference = ResidentialReference.objects.all()[0]
        print residentialReference.thumbnail.url
        print residentialReference.thumbnail.width

Answer 1

此错误与 ImageKit 无关。

您正试图在其自己的定义中引用 class。该代码将在定义 class 时执行，此时 ResidentialReference 不存在。

将该代码放入方法中，或将其完全从 class 中取出。

NameError: name 'ResidentialReference' is not defined [Django - ImageKit]

NameError: name 'ResidentialReference' is not defined [Django - ImageKit]

python

django

django-imagekit