Implementing HTML CheckBoxes in Jinja

Notes

• http://stackoverflow.com/questions/7996075/iterate-through-checkboxes-in-flask
• https://coderwall.com/p/pkthoa/read-checkbox-in-flask
• http://thefort.org/tag/python/ Uses WTForms
• http://webpython.codepoint.net/cgi_multiple_field_names Simple example

Example 1

Template

{% for contact in contacts %}
    <input type="checkbox" id="id_{{contact.id}}" name="contacts" value="{{contact.id}}">
    <label for="id_{{contact.id}}">{{contact.name}}</label>
{% endfor %}

Flask

if request.method == "POST":
    selected_contacts = request.form.getlist("contacts")

Gotchas

• http://nesv.blogspot.com.au/2011/10/flask-gotcha-with-html-forms-checkboxes.html