不僅可以節省數據的一部分數據庫

models.py

...... 
class CatalogGroup(models.Model): 
    name = models.CharField(max_length=100, blank=True, null=True) 
    def __unicode__(self): 
     return self.name 

class Place(models.Model): 
    name = models.CharField(max_length=100, blank=True, null=True) 
    def __unicode__(self): 
     return self.name 


class Scale(models.Model): 
    name = models.CharField(max_length=100, blank=True, null=True) 
    def __unicode__(self): 
     return self.name 



class ProductsTbl(models.Model): 
    model_number = models.CharField(max_length=255, blank=True, unique=True,error_messages={'unique':"This model number has already been registered."}) 
    name = models.CharField(max_length=255, blank=True, null=True) 
    material = models.CharField(max_length=255,blank=True, null=True) 
    color = models.CharField(max_length=255, blank=True, null=True) 
    feature = models.TextField(blank=True, null=True) 
    created = models.DateTimeField(editable=False) 
    modified = models.DateTimeField(auto_now=True) 
    release = models.DateTimeField(blank=True, null=True) 
    suggest = models.TextField(blank=True, null=True) 
    description = models.TextField(blank=True, null=True) 
    cataloggroup = models.ManyToManyField(CatalogGroup) 
    place = models.ManyToManyField(Place) 
    scale = models.ManyToManyField(Scale) 
    slug = models.SlugField(unique=True) 
    user = models.ForeignKey(User, blank=True, null=True) 
    useredit = models.CharField(max_length=32, blank=True, null=True) 
    image = models.ImageField(upload_to=get_imagep_Product, blank=True) 

    def __unicode__(self): 
     return self.name 
    def save(self, *args, **kwargs): 
     ''' On save, update timestamps ''' 

     if not self.id: 
      self.created = timezone.now() 

     return super(ProductsTbl, self).save(*args, **kwargs) 
.....

，我需要的，如果任何用戶修改表單中的數據更新數據庫，所以我有：

views.py

....... 
@login_required 
def edit_thing(request, slug): 
# grab the object... 
    thing = ProductsTbl.objects.get(slug=slug) 
    if thing.user != request.user: 
     raise Http404 
# set the form we're using... 
    form_class = ProductsTblForm 
    if request.method == 'POST': 
# grab the data from the submitted form 
     form = form_class(data=request.POST,files=request.FILES,instance=thing) 

     if form.is_valid(): 
      form = form.save(commit=False) 
      form.useredit = request.user.username 


      form.save() 
      return redirect('thing_detail', slug=thing.slug) 
# otherwise just create the form 
    else: 
     form = form_class(instance=thing) 
# and render the template 
    return render(request, 'things/edit_thing.html', { 
     'thing': thing, 
     'form': form, 
    }) 
.........

不過，我submited數據後，它只有部分數據可在數據庫保存，下面這三個數據不能保存

cataloggroup = models.ManyToManyField(CatalogGroup) 
place = models.ManyToManyField(Place) 
scale = models.ManyToManyField(Scale)

我不知道爲什麼這三個數據無法保存在??

，如果我除去

形式= form.save（提交=假）

從

views.py

，所述

form.useredit = request.user.username

將無法正常工作，但能這三個數據保存到數據庫，但我必須讓USEREDIT更新到用戶誰修改的數據。

來源

2016-05-06 Joe Lin

我弄清楚如何做到這一點,,,我多加一個「form.save（設備）」 ,,它可以保存所有數據

views.py

.... 
if form.is_valid(): 

    form.save() 
    form = form.save(commit=False) 
    form.useredit = request.user.username 

    form.save() 
    return redirect('thing_detail', slug=thing.slug) 
....

來源

2016-05-08 08:01:04

不僅可以節省數據的一部分數據庫

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