Now, we will add the RSS feed to the music app:

1. In the music app, create the feeds.py file and add the following content:

# myproject/apps/music/feeds.py
from django.contrib.syndication.views import Feed
from django.urls import reverse

from .models import Song
from .forms import SongFilterForm


class SongFeed(Feed):
    description_template = "music/feeds/song_description.html"

    def get_object(self, request, *args, **kwargs):
        form = SongFilterForm(data=request.GET)
        obj = {}
        if form.is_valid():
            obj = {"query_string": request.META["QUERY_STRING"]}
            for field in ["artist"]:
                value = form.cleaned_data[field]
                obj[field] = value
        return obj

    def title(self, obj):
        the_title = "Music"
        artist = obj.get("artist")
        if artist:
            the_title = f"Music by {artist}"
        return the_title

    def link(self, obj):
        return self.get_named_url("music:song_list", obj)

    def feed_url(self, obj):
        return self.get_named_url("music:song_rss", obj)

    @staticmethod
    def get_named_url(name, obj):
        url = reverse(name)
        qs = obj.get("query_string", False)
        if qs:
            url = f"{url}?{qs}"
        return url

    def items(self, obj):
        queryset = Song.objects.order_by("-created")

        artist = obj.get("artist")
        if artist:
            queryset = queryset.filter(artist=artist)

        return queryset[:30]

    def item_pubdate(self, item):
        return item.created

2. Create a template for the song descriptions in the RSS feed:

{# music/feeds/song_description.html #}
{% load i18n %}
{% with song=obj %}
    {% if song.image %}
        <img src="{{ song.image.url }}" alt="{{ song }}" />
    {% endif %}
    {% if song.url %}
        <a href="{{ song.url }}" target="_blank" 
         rel="noreferrer noopener">
            {% trans "Check this song" %}
        </a>
    {% endif %}
{% endwith %}

3. Plug in the RSS feed in the URL configuration of the app:

# myproject/apps/music/urls.py
from django.urls import path

from .feeds import SongFeed
from .views import SongList, SongDetail

app_name = "music"

urlpatterns = [
    path("", SongList.as_view(), name="song_list"),
    path("<uuid:pk>/", SongDetail.as_view(), name="song_detail"),
    path("rss/", SongFeed(), name="song_rss"),
]

4.  In the template of the song list view, add a link to the RSS feed:

{# music/song_list.html #}

{% url "music:songs_rss" as songs_rss_url %}
<p>
    <a href="{{ songs_rss_url }}?{{ request.META.QUERY_STRING }}">
        {% trans "Subscribe to RSS feed" %}
    </a>
</p>