Django multiselect checkboxes
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08-07-2019 - |
Question
I have a list of objects, each with it's own checkbox, where the user can select multiple of these. The list is a result of a query.
How can I mark in the view which checkboxes are already selected? There doesn't seem to be an in operator in the template language.
I want something along the lines of:
<input {% if id in selectedIds %}checked {% endif %}>
Solution
You could use a templatetag like the one in this snippet comments:
http://www.djangosnippets.org/snippets/177/
@register.filter
def in_list(value,arg):
return value in arg
To be used in templates:
The item is
{% if item|in_list:list %}
in list
{% else %}
not in list
{% endif %}
Not very smart, but it works.
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