Django ListView 循环通过 class 属性创建的信息（不是来自数据库）

Question

在我的 ListView 页面上，我需要能够遍历来自我的 views.py.

的状态列表

我可以在 DetailView 上完成，但我在 ListView 上遇到同样的问题。

我搜索了又搜索，但似乎无法找到解决我的具体问题的帮助。

DetailView 的工作代码：

managers.py

class ICCRequestManager:

...

@property
    def statuses(self):
        """ Current status of ICC request """

        if not self.is_submitted:
            yield "Created, not yet submitted"

        if self.is_submitted and not self.legal_signoff_status:
            yield "Waiting for security review"

        if self.is_submitted and not self.security_signoff_status:
            yield "Waiting for legal review"

        if self.legal_signoff_status and self.security_signoff_status:
            yield "Fully reviewed, ICC team is working"

views.py

from . import managers

...

class ICCRequestMixin:
    """ Mixin for the request model """

    model = models.ICCRequest
    context_object_name = 'icc_request'

class ICCRequestDetailView(LoginRequiredMixin, ICCRequestMixin, DetailView):
    """ View to see the current status of an ICC request """

    template_name = "icc/request_status.html"

    def get_context_data(self, **kwargs):
        """ Add required context """

        context = super().get_context_data(**kwargs)
        context["icc_request_manager"] = managers.ICCRequestManager(self.object)

        return context

request_status.html

    <ul>
        {% for value in icc_request_manager.statuses %}
            <li>{{ value }}</li>
        {% endfor %}
    </ul>

上面按预期显示了一个简单的项目符号列表。

问题代码：

views.py

class ICCRequestListView(LoginRequiredMixin, ICCRequestMixin, ListView):
    """ View to list requests """

    template_name = "icc/request_list.html"
    paginate_by = 10

    def get_context_data(self, **kwargs):
        """ Add required context """

        context = super().get_context_data(**kwargs)
        context["icc_request_manager"] = managers.ICCRequestManager(self.object_list)

        return context

工作部分： request_list.html

<table class="table table-striped table-bordered">

    <tr>
        <th scope="col">ICC #</th>
        <th scope="col">Company</th>
        <th scope="col">Brief Description</th>
        <th scope="col">LOB</th>
        <th scope="col">Requester</th>
        <th scope="col">Status</th>
    </tr>

    {% for request in icc_request %}
    <tr>
        <th scope="row"><a href="{% url 'icc:request-detail' pk=request.id %}">{{ request.id }}</a></th>
        <td>{{ request.company_name}}</td>
        <td>{{ request.summary }}</td>
        <td>{{ request.owner_area }}</td>
        <td>{{ request.requested_on_behalf_of }}</td>
        <!--- I want the statuses list here --->
    </tr>
</table>

尝试在详情页循环点赞：

...
<!--- I want the statuses list here --->
<td>
            <ul>
                {% for status in request.icc_request_manager.statuses %}
                <li>
                    {{ status }}
                </li>
                {% endfor %}
            </ul>
        </td>
        {% endfor %}
    </tr>
</table>

这不会给出错误，但不会显示任何内容（而 request_status.html 页面显示）。

唯一的错误是 get_context_data 上的以下 linting 错误：

"Parameters differ from overridden 'get_context_data' method."

Answer 1

所以我想通了。

1) ListView上的get_context_data与它无关。没有必要。

2) 我需要从 yield 更改为返回列表：

    def statuses(self):
        """ Current status of icc request """

        statuses = list()

        if not self.is_submitted:
            statuses.append("Created, not yet submitted")
        if self.is_submitted and not self.legal_signoff_status:
            statuses.append("Waiting for security sign off")
        if self.is_submitted and not self.security_signoff_status:
            statuses.append("Waiting for security review")
        if self.legal_signoff_status and self.security_signoff_status:
            statuses.append("Fully reviewed, ICC team is working")
        return statuses

3) 为模型添加了一个方法：

    @property
    def get_icc_request_manager(self):
        """ Get the manager for this one request """
        # Needed to import managers inside the method to prevent Circular import problem
        import icc.managers

        mgr = icc.managers.ICCRequestManager(icc_request=self)
        return mgr

4) 使用 with:

<table class="table table-striped table-bordered">

    <tr>
        <th scope="col">ICC #</th>
        <th scope="col">Company</th>
        <th scope="col">Brief Description</th>
        <th scope="col">LOB</th>
        <th scope="col">Requester</th>
        <th scope="col">Status</th>
    </tr>

    {% for request in icc_request %}
        {% with request_manager=request.get_icc_request_manager %}
        <tr>
            <th scope="row"><a href="{% url 'icc:request-detail' pk=request.id %}">{{ request.id }}</a></th>
            <td>{{ request.company_name}}</td>
            <td>{{ request.summary }}</td>
            <td>{{ request.owner_area }}</td>
            <td>
                {% if request.requested_on_behalf_of %}
                    {{ request.requested_on_behalf_of }}
                {% elif request.requested_by %}
                    {{ request.requested_by }}
                {% else %}
                &nbsp;
                {% endif %}
            </td>

            <td>
                <ul>
                    {% for status in request_manager.statuses %}
                    <li>
                        {{ status }} test 
                    </li>
                    {% endfor %}
                </ul>
            </td>
            {% endwith %}
        {% endfor %}
    </tr>
</table>

Django ListView 循环通过 class 属性创建的信息（不是来自数据库）

Django ListView loop through info created by a class property (not from the database)

enterprise

python-3.x

bootstrap-4

django-2.1

Django ListView 循环通过 class 属性 创建的信息（不是来自数据库）

Django ListView loop through info created by a class property (not from the database)

enterprise

python-3.x

bootstrap-4

django-2.1

Django ListView 循环通过 class 属性创建的信息（不是来自数据库）