Django: For Loop to Iterate Form Fields

问题

I don't want to use django's built in form generation, seeking to specify each field in my template in order to customize the html output.

How do I iterate over a series of form fields?

If my form looks like this:

class MyForm(forms.Form):
    main_image = forms.ImageField()
    second_image = forms.ImageField()
    third_image = forms.ImageField()
    fourth_image = forms.ImageField()
    ...

Is there way to write a {% for %} loop so that I can iterate through:

{{ form.main_image }}
{{ form.second_image }}
{{ form.third_image }}
{{ form.fourth_image }}

I tried the following which seemed logical, but did not work:

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

回答1:

Well this would clearly not work:

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

but this will:

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

回答2:

This one should work :

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

Once you loop through field in form , you can't access form.field

回答3:

The best way is to use two loops, one for hidden fields and one for visible fields :

visibles:

{% for field in form.visible_fields %}
    {{ field.label }}
    {{ field }}
{% endfor %}

hiddens:

{% for hidden in form.hidden_fields %}
    {{ hidden }}
{% endfor %}

in this way you will have better control over UI elements.

回答4:

For any frontend developers looking to customize a Django form you can use a package called django-widget-tweaks to render fields individually. Example code below:

{# Your template with the form #}
{% extends "base.html" %}
{% load widget_tweaks %}

<form action="" method="POST">
    {% csrf_token %}

    {% for field in form %}
        <label for="{{ field.id_for_label }}">
          {{ field.label }}{% if field.field.required %}*{% endif %}
        </label>
        {% render_field field %}
    {% endfor %}

    <button type="button">
        Submit Form
    </button>
</form>

Note: You'll want to make this look nicer of course, and you may want to loop through your form errors if there are any.

They have some very useful examples on their PyPi page as well.

来源：https://stackoverflow.com/questions/19123715/django-for-loop-to-iterate-form-fields

标签

django

forms

loops

field