Question

我有以下表格显示用户设置的模型条目。选中后，我希望按钮抓住它的pk并将其发送到Delete视图。这是当前的代码，但我遗漏了这一部分。

user_detail模板html

                <form id="SettingsListForm"><label>&nbsp Settings List : &nbsp &nbsp &nbsp</label>
                    {% if user.usersetting.first %}
                        <select class="form-control" name="settingslist" id = "settingslist" form="SettingsListForm" >
                            {% for settings in user.usersetting.all %}      
                                    <option value="{{ settings.file.url }}">{{ settings }} 
                                    </option>

                            {% endfor %}
                        </select>
                    {% else %}
                        <li class="list-group-item">NO SETTINGS YET</li>
                    {% endif %}
                    <button class="btn btn-outline-light btn-circle"><i class="glyphicon glyphicon-minus" href="{% url 'my_app:setting_delete' pk=user.usersetting.last.id %}"></i></button>

                    {% block delete_setting_confirm_block %}

                    {% endblock %}
                </form>

setting_confirm_delete html模板，包含delete_setting_confirm_block

{% extends 'login_app/user_detail.html' %}
{% block delete_setting_confirm_block %} 
    <h4> 
        ARE YOU <b>REALLY</b> SURE YOU WANT TO <b>DELETE</b> THIS SETTING ?
        <form method="POST">
            {% csrf_token %}
            <button type="submit" class="btn btn-outline-light btn-danger" value="Delete">YES</button>
            <a class="btn btn-outline-light btn-default" href="{% url 'login_app:user_detail' pk=user.id %}"><b>NO</b></a>
        </form>
    </h4>
{% endblock %}

my_app网址

url(r'^setting/(?P<pk>\d+)/$',views.UserSettingDeleteView.as_view(),name='setting_delete'),

my_app视图中的UserSettingDeleteView

class UserSettingDeleteView(DeleteView):

    model = models.UserSetting
    template_name = 'my_app/setting_confirm_delete.html'

    def get_success_url(self):
        return reverse('my_app:user_detail', kwargs={'pk': self.object.user.pk})

不知何故，类似的技术在使用listgroups时工作正常：

user_detail html中的工作示例

        <ul class="list-group">
            {% if user.userdata.first %}
                {% for data in user.userdata.all %}
                    <li class="list-group-item">{{ data }}<a class="btn btn-outline-light btn-circle" href="{% url 'my_app:data_delete' pk=data.pk %}"><i class="glyphicon glyphicon-remove"></i></a><a href="{{ data.file.url }}" class="btn btn-outline-light btn-circle" download><i class="glyphicon glyphicon-save"></i></a></li>
                {% endfor %}
                {% block delete_data_confirm_block %}

                {% endblock %}
            {% else %}
                <li class="list-group-item">NOTHING RECORDED YET</li>
            {% endif %}

        </ul>

Answer 1

在template.html中，您应该创建一个删除表单，如下所示：

<form action="{% url 'my_app:setting_delete' pk=user.usersetting.last.id %}" method="post">
    {% csrf_token %}
    <input type="submit" value="Delete" class="btn btn-outline-light btn-circle">
</form>

因为在HTML格式中您无法直接发送PUT或DELETE，所以您应该通过POST请求伪造它。阅读this会很有用，可以很好地解释。

您的UserSettingDeleteView可以这么简单：

from django.views.generic.edit import DeleteView
from django.urls import reverse_lazy


class UserSettingDeleteView(DeleteView):
    model = MyModel
    # Replace with the model you want to delete (User)

    success_url = reverse_lazy('my_app:setting_list')
    # After deletion, possibly you will want to redirect the user to the list view

内置DeleteView关注您通过您的网址传递的pk参数找到您的模型并将其删除，您只需配置model和{{1 }}}。

现在，如果您点击删除按钮，您应该会删除所需的条目，并将用户重定向到列表视图。

修改

我忘了你想通过选项获得这个条目。在这里，您必须使用一些JavaScript才能找到当前选定的元素，并将其success_url发送到您的pk。

首先，将DeleteView添加到您的id代码中，如下所示：

option

然后添加一些 jQuery ：

<select class="form-control" name="settingslist" id="settingslist" form="SettingsListForm"> {% for settings in user.usersetting.all %} <option value="{{ settings.file.url }}" id="{{ settings.id }}">{{ settings }}</option> {% endfor %} </select>

最后，您需要将var settingId = $('#SettingsListName').find(":selected").attr('id');发送到相应的网址，但我对JavaScript不是很熟悉。

Answer 2

尝试在表单中添加隐藏的输入。现在，没有任何东西通过表格。

<input type="hidden" name="del_setting" value="{{user.usersetting.last.id}}">

所以你的表格看起来像这样

<form method="POST"> 
{% csrf_token %} 
  <input type="hidden" name="del_setting" value="{{user.usersetting.last.id}}">
  <button type="submit" class="btn btn-outline-light btn-danger" value="Delete">YES</button>
  <a class="btn btn-outline-light btn-default" href="{% url 'login_app:user_detail' pk=user.id %}"><b>NO</b></a> 
</form>

您也可能应该将其移出用户详细信息模板中的当前表单，这样您就不会在表单中放置表单：

{% block delete_setting_confirm_block %}
{% endblock %}

Answer 3

前面提到的解决方案都没有用，所以我猜问题是嵌套的bootstrap选择项，它应该显示设置的pk。为简单起见，我使用list-group代替

删除了问题

                <ul class="list-group">
                    {% if user.usersetting.first %}
                        {% for settings in user.usersetting.all %}
                            <li class="list-group-item">{{ settings }}<a class="btn btn-outline-light btn-circle" href="{% url 'my_app:setting_delete' pk=settings.pk %}"><i class="glyphicon glyphicon-remove"></i></a></li>
                        {% endfor %}
                        <label>Create a new setting...</label>
                        <a class="btn btn-outline-light btn-circle"><i class="glyphicon glyphicon-plus"></i></a>
                    {% else %}
                        <li class="list-group-item">Create a new setting...<a class="btn btn-outline-light btn-circle"><i class="glyphicon glyphicon-plus"></i></a></li>
                    {% endif %}
                    {% block delete_setting_confirm_block %}

                    {% endblock %}
                </ul>

作为一种解决方法，这很有效。

django从选定的表单选项中删除模型条目

3 个答案: