django中ImageField的使用详解

# 图片储存根路径
MEDIA_ROOT = join('media')
# 图片访问url
MEDIA_URL = '/IMG/'

class Menu(models.Model):
  """
  餐品数据库
  """
  ID = models.BigAutoField(primary_key=True,editable=False)
  lastEditTime = models.DateTimeField(auto_now_add=True)
  merchantID = models.ForeignKey(Usr, verbose_name="商家账号", on_delete=models.CASCADE,to_field='ID')
  itemName = models.CharField(max_length=20,verbose_name="餐品名")
  itemText = models.TextField(verbose_name="餐品简介")
  price = models.FloatField(verbose_name="餐品价格")
  ################# up_load代表你上传图片所存储的文件夹名字
  picture = models.ImageField(verbose_name='餐品图片',null=True,upload_to='img/')
  class Meta:
    db_table = "Menu"
    verbose_name = "餐品数据表"
    ordering=['-lastEditTime']

class MerchantDish(forms.Form):
  """
  商家菜品提交表单
  """
  itemName = forms.CharField(max_length=20,label="餐品名")
  itemText = forms.CharField(max_length=300,label="餐品简介")
  price = forms.FloatField(label="餐品价格")
  picture = forms.ImageField(label='餐品图片')

 
  {% csrf_token %} {{form.as_p}}
  修改 
  删除

{% for dish in menu %}



  {% csrf_token %}
  

    

        
    
    

      

        
        菜名：{{dish.itemName|default:"Null"}}
        
        
          价格：{{dish.price|default:"Null"}}
        

      
      简介：{{dish.itemText|default:"Null"}}
    
  


{% empty %}



暂无数据..

{% endfor %} {% endblock tableBody %}

from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
  path('', views.base_view, name = "base"),# 顾客服务系统
  path('order//', views.order_view),# 订单详情
  path('order//submit/',views.order_submit),# 提交订单
  path('pay//', views.pay_view),# 缴费
  path('pay//submit/',views.pay_submit),#确认账单
  path('order/list/',views.order_list_view),#历史订单列表
  path('order/confirm//',views.order_confirm),#订单确认收到
  path('order/comment//',views.comment),#到达相应菜品的评论界面
  path('order/comment_post//',views.comment_post)#提交评论
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

def updateDish_post(request,dishID):
  """
  接受修改菜品的请求
  """
  dish_form = MerchantDish(request.POST,request.FILES)
  if dish_form.is_valid() :
    dish = Menu.objects.get(ID = dishID)
    dish.itemName = dish_form.cleaned_data['itemName']
    dish.itemText = dish_form.cleaned_data['itemText']
    dish.price = dish_form.cleaned_data['price']
    dish.picture = dish_form.cleaned_data['picture']
    dish.save()
    # dishChange = dish_form.clean()    
    return redirect('/MerchantSystem/')
  elif dish_form.errors is not None:
    print(dish_form.errors)
    return HttpResponse(str(dish_form.errors))