Why not pass?

models.py

from django.db import models

class Song(models.Model): title = models.CharField(max_length=255) artist = models.TextField() performer = models.ForeignKey('Performer') duration = models.DurationField(default=0)

def str(self): return '{} by {}'.format(self.title, self.artist)

class Performer(models.Model): name = models.CharField(max_length=255)

def str(self): return self.name

views.py

from django.shortcuts import render, get_object_or_404

from .models import Song, Performer

def song_list(request): all_list = Song.objects.all() return render(request, 'songs/song_list.html', {'songs':all_list})

def song_detail(request, pk): song = get_objects_or_404(Song, pk=pk) return render(request, 'songs/song_detail.html', {'song': song})

def performer_detail(request, pk): performer = get_objects_or_404(Performer, pk=pk) songs = Song.objects.all().filter(performer=performer) return render(request, 'songs/performer_detail.html', {'performer': performer, 'songs': songs})

performer_detail.html

{% extends 'base.html' %}

{% block title %}{{ performer.name }}{% endblock %}

{% block content %} <h2> {{ performer }} </h2> {% for song in songs%} {{ song }} {% endfor %} {% endblock %}

from django.db import models

# Write your models here

class Performer(models.Model):
    name = models.CharField(max_length=255)

    def __str__(self):
         return self.name

class Song(models.Model):
    title = models.CharField(max_length=255)
    artist = models.TextField()
    performer = models.ForeignKey('Performer')
    duration = models.DurationField(default=0)

    def __str__(self):
        return '{} by {}'.format(self.title, self.artist)

from django.shortcuts import render, get_object_or_404

from .models import Song, Performer

def song_list(request):
    all_list = Song.objects.all()
    return render(request, 'songs/song_list.html', {'songs':all_list})

def song_detail(request, pk):
    song = get_objects_or_404(Song, pk=pk)
    return render(request, 'songs/song_detail.html', {'song': song})

def performer_detail(request, pk):
    performer = get_objects_or_404(Performer, pk=pk)
    all_song = Song.objects.all()
    songs = filter(performer=performer, all_song)
    return render(request, 'songs/performer_detail.html', {'performer': performer, 'songs': songs})

{% extends 'base.html' %}

{% block title %}{{ performer.name }}{% endblock %}

{% block content %}
<h2>
  {{ performer }}
</h2>
    {% for song in songs%}
    {{ song }}
    {% endfor %}
{% endblock %}