的愈來愈integrityError試圖執行時Django的multiupload

我一直試圖實現Django的multiupload應用程序時，得到以下integrityError：的愈來愈integrityError試圖執行時Django的multiupload

列「POST_ID」

空值違反非空約束詳細信息：如果不排包含（9，post_images/1899987_718836594813781_835045800_n.jpg，null，null，null）。

我想讓我的用戶上傳多張圖片到帖子。我認爲我出錯的地方在於它可能在獲得帖子ID之前進行保存。在我看來，我已經改變了form_valid，這也可能會影響它。

理想情況下，我希望將picture_author和項目實例傳遞給每個圖像，但要開始，我已經將它們設置爲null來弄清楚此刻如何傳遞post實例。

Im新編碼& django，所以任何幫助試圖解決它將不勝感激！

型號：

class ProjectPost(models.Model): 
    project = models.ForeignKey(UserProject) 
    title = models.CharField(max_length=100) 
    post_overview = models.CharField(max_length=1000) 
    date_created = models.DateTimeField(auto_now_add=True) 
    post_views = models.IntegerField(default=0) 
    post_likes = models.IntegerField(default=0) 
    post_author = models.ForeignKey(User, null=True) 


class PostImages(models.Model): 
    post_picture = models.FileField(upload_to='post_images', blank=True) 
    post = models.ForeignKey(ProjectPost) 
    picture_description = models.CharField(max_length=100) 
    picture_author = models.ForeignKey(User, null=True) 
    project = models.ForeignKey(UserProject, null=True)

形式

class ProjectPostForm(forms.ModelForm): 

    class Meta: 
     model = ProjectPost 
     fields = ('title', 'post_overview') 

    files = MultiFileField(min_num=1, max_num=20, max_file_size=1024*1024*5) 

    def save(self, commit=True): 
     instance = super(ProjectPostForm, self).save(commit) 
     for each in self.cleaned_data['files']: 
      PostImages.objects.create(post_picture=each, post=instance) 

     return instance

意見

class NewPost(CreateView): 
    model = ProjectPost 
    form_class = ProjectPostForm 
    template_name = 'howdidu/new_post.html' 

    def form_valid(self, form): 
     self.object = form.save(commit=False) 
     project = UserProject.objects.get(slug=self.kwargs["slug"]) 
     self.object.project = project 
     form.instance.post_author = self.request.user 
     self.object.save() 
     return super(NewPost, self).form_valid(form) 

    def get_success_url(self): 
     project_username = self.request.user.username 
     project_slug = self.object.project.slug 
     return reverse('user_project', kwargs={'username':project_username, 'slug': project_slug})

來源

2015-12-13 ollysmall

你必須保存後才能添加圖片到它。你需要明確地告訴get_or_create在保存圖像之前post_id應該是什麼，我不認爲你在代碼中這樣做。

來源

2015-12-18 05:11:16 jonhairston

的愈來愈integrityError試圖執行時Django的multiupload

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