How to get if checkbox is checked on flask

Question

I'm using Bootstrap with Flask Python.

 request.form.get("name")
 #name is the name of the form element(checkbox)

 <label class="btn btn-danger pzt active">
     <input type="checkbox" name="name" value="1" data-id="0"> Check
 </label>

When checkbox is checked, parent label has class "active", I want to get if checked box is checked. Is there any way or methods?

What does request.form.get("name") return?

Blender
– Blender

2014-01-06 01:52:58 +00:00
Commented Jan 6, 2014 at 1:52 — Blender
– Blender, Commented Jan 6, 2014 at 1:52

anurag619 · Accepted Answer · 2014-01-30 09:54:29Z

20

you can try the following:

HTML:

<div class="checkbox">
<label>
    <input type="checkbox" name="check" value="edit"> New entry
</label>
</div>

In flask:

 value = request.form.getlist('check')

This will give you the value of the the checkbox. Here value will be a list.

value = [u'edit']

You can also get value of multiple checkboxes with same name attribute.

edited Jan 30, 2014 at 9:54

answered Jan 30, 2014 at 9:04

anurag619

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1 Comment

dannypernik Over a year ago

If request.form.getlist('name_attr') returns 'on', it's likely that you haven't set the value attribute.

TwilightSun · Accepted Answer · 2014-01-06 01:32:36Z

5

I'm not familiar with Flask, but I do know how HTTP works.

If you want to know if its checked on the server side, just check if that form field exists, if request.form.get("name") gives you NULL or exception, then the checkbox should be unchecked.

If you want to know it on the client side with javascript, you can use jQuery (as jQuery is a base component of Bootstrap) as $('xxxx').is(':checked') (replace xxxx with a valid selector).

answered Jan 6, 2014 at 1:32

TwilightSun

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4 Comments

Alpan Karaca Over a year ago

But the checkbox has no attribute "checked" when i click on it. Label has "active" class or not.

TwilightSun Over a year ago

@alpan if then, just make it $('xxxx').hasClass('active');

Alpan Karaca Over a year ago

I'm not checking it with javascript, checking it with python flask

TwilightSun Over a year ago

@alpan That's server side check. You should get it by isChecked = 'name' in request.form && request.from.get('name') == '1' (the value check is optional)

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