question

questions

  1. The view back_ground.views.article didn’t return an HttpResponse object. It returned None instead.

解决方法：检查路由中是否写了参数url(r’^update_article/(\d+)’, views.update_article)

  1. 图片上传
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    <!--1. form表单中，有 enctype="multipart/form-data" 这个属性-->
    <!--2.图片的路径-->
    <p>标题图片：<input type="file" name="icon">{{ form.icon }}
      {% if article.icon %}
        <img src="/media/{{ article.icon }}" alt="加载失败">
      {% endif %}
    </p>
    <!--3.  解析上传的文件-->
    if request.method == 'POST':
        form = EditArtForm(request.POST, request.FILES)
        if form.is_valid():
            # 验证成功
            title = form.cleaned_data['title']
            desc = form.cleaned_data['desc']
            content = form.cleaned_data['content']
            icon = form.cleaned_data['icon']
            article = Article.objects.filter(pk=id).first()
            article.title = title
            article.desc = desc
            article.content = content
            if icon:
                article.icon = icon
            article.save()
            return HttpResponseRedirect(reverse('back_ground:article'))
        # 验证失败
        article = Article.objects.filter(pk=id).first()
        return render(request,
                      'add_article.html',
                      {'form': form, 'article': article})
    <!--4.setting文件中添加解析文件-->
    MEDIA_URL = '/media/'
    MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
    <!--5.主路由urls中，添加保存路径-->
    # 告诉django，解析media文件夹中的静态文件
    urlpatterns += static(MEDIA_URL, document_root=MEDIA_ROOT)

3.错误：

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[root@iZhp3c0fe0km5ut9vmr8ooZ home]# systemctl restart nginx
Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.

解决方法：uwsgi.txt或者nginx.txt文件中的内容可能有错

4.错误：

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(env) [root@smile]# pip3 install -r re_install.txt
Could not open requirements file: [Errorn 2] No such file or directory: 're_install.txt'

解释：表示没有文件re_install.txt，所以不能打开