Question

我正在尝试使用ForeignKey字段中的值来显示CreateView中的清单。

models.py

class Structure(models.Model):
    name = models.CharField(max_length = 30)
    description =models.CharField(max_length = 300, null=True, blank=True)
    def __str__(self):
        return self.name

class SelectedFramework(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    structure = models.ForegignKey(Structure)
    selected = models.BooleanField(default = False)

views.py

class FrameworkCreateView(generic.CreateView):
    model = SelectedFramework
    fields =['structure', 'selected']
    template_name = 'catalogue/structure.html'
    def form_valid(self, form):
        form.instance.user = self.request.user
        return super(FrameworkCreateView, self).form_valid(form)

structure.html

{% extends 'catalogue\base.html' %}
{% block container %}
<h2>{% block title %}Structures{% endblock title %}</h2>

<form action="" method="post">
    {% csrf_token %}
    {% for field in form %}
    <div class="col-sm-10">{{form.structure}} {{form.selected}}</div><br>
{% endfor %}
</div>
</form>
{% endblock %}

上面的代码有效，但会显示ForeignKey＆＃39;结构＆＃39;作为下拉列表，其值为__str__。有没有办法使用CreateView中structure.name的复选框显示structure.description和selected的字符串？

Answer 1

在您的模板中使用：

{{ form.structure.name }}
{{ form.structure.description}}

Answer 2

您可以编写自定义表单，覆盖保存方法并在那里手动创建Structure对象：

class FrameworkForm(forms.ModelForm):
    structure_name = forms.CharField(required=True)
    structure_description = forms.CharField(required=False)

    class Meta:
        model = SelectedFramework
        fields = [
            'structure_name', 'structure_description', 'selected'
        ]

    def save(self, commit=False):
        instance = super(FrameworkForm, self).save(commit=False)
        structure = Structure(
            name=self.cleaned_data.get('structure_name'),
            description=self.cleaned_data.get('structure_description')
        )
        structure.save()
        instance.structure = structure
        instance.save()
        return instance

同时将form_class = FrameworkForm添加到您的视图中，而不是fields = ['structure', 'selected']

修改

也许你想要这样的东西：

<ul> {% for structure in form.fields.structure.choices.queryset %} <li>{{ structure.name }} - {{ structure.description }}</li> {% endfor %} </ul>

Answer 3

如果您想通过在模板中迭代来获取字段。你必须使用 -

{% for field in form %}
    {{ field }}
{% endfor %}

不必使用任何点符号来获取字段。如果您想获取字段的标签，通常可以在{{ field.label}}

之前使用{{field}}

在CreateView的Django模板中显示foriegnkey字段

3 个答案: