Question

我在ModelForm中有一个views.py：a_form = MyModelForm(request.POST or None)

我的ModelForm有很多字段：field1,field2,field3以及更多

如何在模板中循环访问某些字段（仅说field2和field3）？

我尝试过：

#template.html
<label>Example: </label>
    {% for text in fields %}
    #Hoping to get the a_form.field2 and a_form.field3 checkboxes with "text" as the label
        <label>{{text|return_var}}{{text}</label>
    {% endfor %}

#views.py
fields = ['field2', 'field3']
return render(request, 'template.html', {'a_form':a_form,"fields":fields)

#forms.py
@register.filter
def return_var(text):
    return "a_form." + text

但这只是给我a_form.field2field2 a_form.field3field3作为页面上的文字，而不是带有我想要标签的复选框。

Answer 1

您可以使用template.html中的点访问字段：

<form>
    {%csrf_token%}
    <label for="{{ a_form.field1.id_for_label }}">Your field1:</label>
    {{ a_form.field1 }}
    ....
</form>

阅读Django文档https://docs.djangoproject.com/en/2.0/topics/forms/

中的本节

更新：

{% for field in a_form %}
    <div class="fieldWrapper">
        {{ field.errors }}
        {{ field.label_tag }} {{ field }}
        {% if field.help_text %}
            <p class="help">{{ field.help_text|safe }}</p>
        {% endif %}
    </div>
{% endfor %}

像这样编辑您的表单：

class MyModelForm(forms.ModelForm):
    class Meta:
       model = YourModel
       fields = ('field1', 'field2', 'field3')

如果您想在模板中包含所有字段，但要隐藏其中的某些字段，则可以使用以下方法隐藏某些字段：

class MyModelForm(forms.ModelForm):
    class Meta:
       model = YourModel
       fields = ('field1', 'field2', 'field3')
       widgets = {
        'hidden_field4': forms.HiddenInput(),
       }

然后，您可以遍历您的隐藏字段或/和可见字段：

{% for hidden in form.hidden_fields %}
{{ hidden }}
{% endfor %}
{# Include the visible fields #}
{% for field in form.visible_fields %}
    <div class="fieldWrapper">
        {{ field.errors }}
        {{ field.label_tag }} {{ field }}
    </div>
{% endfor %}

最终

要按照评论中的说明将文件分组，可以执行以下操作：

class MyModelForm(forms.ModelForm):
    class Meta:
       model = YourModel

    def field2to8(self):
        return [field for field in self if not field.is_hidden
           and field.name in ('field2', ..., 'field8')]

    def field8to20(self):
        return [field for field in self if not field.is_hidden
           and field.name in ('field8', ..., 'field20')]

然后在此模板中添加

{% for field in form.field2to8 %}
    {{ field.label_tag }} {{ field }}
    <span class="help-block">{{ field.help_text }}</span>
{% endfor %}
{% for field in form.field8to20 %}
    {{ field.label_tag }} {{ field }}
    <span class="help-block">{{ field.help_text }}</span>                             
{%endfor%}

如何访问模板中的特定“模型”字段？

1 个答案: