Certain django-select2 fields won't render when multiple forms are used on single template

I have an issue rendering some select2 fields: When multiple forms with same select2 widget are used within a single template some select2 fields are not rendered as expected (rendered just as normal select field). If I re-initialize one of the fields using JQuery it renders as expected ($("element").djangoSelect2()).

CSS/JS (the one rendered with {{ form.media }} property) renders as well and can be seen in browser's dev mode.

What might be the issue rendering django-select2 fields and do I have to render media imports for each form or just one of them is enough as they looks identical?

Simplified forms example:

FORM 1:

<form action="">
    <div class="form-meta">
        {{ form.media }}
    </div>
    <div class="field p-2 d-flex flex-column flex-fill rounded">
        {{ form.recipient.label_tag }}
        {{ form.recipient }}
        {% if form.recipient.errors %}
            <div class="error">{{ form.recipient.errors }}</div>
        {% endif %}
    </div>
</form>

FORM 2

<form action="">
    <div class="d-flex flex-column gap-2">
        <!-- Recipient field -->
        <div class="form-meta">
           {{ shipment_form.media }}
        </div>
        <div class="d-flex gap-2 p-3 border">
            <i class="align-self-center fa-regular fa-user fa-2x"></i>
            <div class="vr"></div>
            <div class="d-flex gap-2 flex-fill">
                <div id="recipientFieldContainer" class="flex-fill">
                    {{ shipment_form.recipient }}
                </div>
                <button class="btn btn-dark rounded-0" type="button" data-bs-target="#newRecipientModal" data-bs-toggle="modal">+</button>
            </div>
        </div>
        <!-- Comment field -->
        {{ shipment_form.comment }}
    </div>
</form>

The problem is that both forms have a field with the same HTML id (e.g., id_recipient).

Django-select2 relies on unique IDs to initialize each widget. When two fields share the same ID, only the first one is enhanced, and the others remain normal <select> elements.

In your template:

{{ form.recipient }}
{{ shipment_form.recipient }}

Both fields render with the same id, for example:

<select id="id_recipient" name="id_recipient">...</select>
<select id="id_recipient" name="id_recipient">...</select>

This causes Select2 initialization to break for the second field. That’s why manually re-initializing with jQuery works:

$("#id_recipient").djangoSelect2();

You need to ensure unique IDs for each field. You can do this directly in your forms.py by overriding the widget and assigning a unique attrs['id']. A common approach is to use uuid:

import uuid
from django import forms
from django_select2.forms import Select2Widget

class MyForm(forms.Form):
    recipient = forms.ChoiceField(
        choices=[('1', 'Alice'), ('2', 'Bob')],
        widget=Select2Widget(attrs={'id': f'recipient_{uuid.uuid4()}'})
    )

This ensures each select field has a unique HTML ID, e.g.:

<select id="recipient_123e4567-e89b-12d3-a456-426614174000" ...>
<select id="recipient_987f1234-e89b-12d3-a456-426614174999" ...>

Now django-select2 can initialize both fields correctly without conflicts.

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