django form: how to check out checkbox state in template

Question

I have a form with checkboxes that works fine, but when the user submits the form with errors and my checkbox is checked I need to change div class which holds the checkbox. So I was experimenting with {{ form.mycheckbox.data }} in the template and it says False on page load. Now when user is click on a checkbox and the form has errors, it says on. So I tried:

{{ if form.mycheckbox.data == True }} doesn't work

{{ if form.mycheckbox.data != False }} doesn't work

{{ if form.mycheckbox.data == 'on' }} doesn't work

{{ if form.mycheckbox.data == on }} doesn't work

I was make typo with div class name, =='on' works. Sorry

Goran
– Goran

2011-09-08 19:31:33 +00:00
Commented Sep 8, 2011 at 19:31 — Goran
– Goran, Commented Sep 8, 2011 at 19:31

user931920 · Accepted Answer · 2011-09-07 15:33:15Z

24

Use {% if form.mycheckbox.value %}. This will evaluate to true if the box is checked. For the opposite behavior, use {% if not form.mycheckbox.value %}.

Note the syntax is {% if ... %}, not {{ if ...}}. Percent-brackets are for commands, double-brackets are for outputting variables.

edited Sep 7, 2011 at 15:33

answered Sep 7, 2011 at 3:55

user931920

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Comments

hermansc · Accepted Answer · 2011-12-27 19:57:42Z

19

In models.py:

class Article:
    published = BooleanField()
    (...)

In the template:

 <input type="checkbox" name="published" {% if article.published %}checked{% endif %} />

answered Dec 27, 2011 at 19:57

hermansc

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user3212779 · Accepted Answer · 2016-01-20 13:16:01Z

7

Work for me:

{% for foo in form.tags %}
  <label class="publication-tag">
    <input class="publication-tag__checkbox"
      {% if foo.choice_value in foo.value %}checked="checked"{% endif %}
      type="checkbox" 
      name="{{ foo.name }}"
      value="{{ foo.choice_value }}">
{% endfor %}

That:

{% if foo.choice_value in foo.value %}checked="checked"{% endif %}

answered Jan 20, 2016 at 13:16

user3212779

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2 Comments

gbozee Over a year ago

A correction to the above if condition is {% if foo.choice_value in forms.tags.value %}checked="checked"{% endif %}

Suraj Over a year ago

{% if foo.choice_value in foo.value %} This works just fine.

Harold Happy · Accepted Answer · 2019-05-30 05:53:54Z

0

While, first you should use BooleanField in your model, not the CharField. Then, there are two accesses:

just put {{form.yourField}} in your template (preferred)
or, use {% if form.yourFiled.value %} checked {%endif%}

answered May 30, 2019 at 5:53

Harold Happy

1

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