#music/models
from django.db import models
class Album(models.Model):
artist = models.CharField(max_length=50)
album_title = models.CharField(max_length=50)
genre = models.CharField(max_length=50)
album_logo = models.CharField(max_length=500)
def __str__(self):
return self.album_title + ' - ' + self.artist
class Song(models.Model):
album = models.ForeignKey(Album, on_delete=models.CASCADE)
file_type = models.CharField(max_length=50)
song_title = models.CharField(max_length=50)
def __str__(self):
return self.song_title
--------------------------------
#python shell
>>> from music.models import Album, Song
>>> album1 = Album.objects.get(pk=1)
>>> album1
<Album: Red - Taylor Swift>
>>> song = Song()
>>> song.album = album1
>>> song.file_type = 'mp3'
>>> song.song_title = 'I hate my boyfriend'
>>> song
<Song: I hate my boyfriend>
>>> song.file_type
'mp3'
>>> song.save()
>>> song.song_title = 'I love my boyfriend'
>>> song.save()
------------------------------------------
>>> from music.models import Album, Song
>>> album1 = Album.objects.get(pk=1)
>>> album1.song_set.all()
<QuerySet [<Song: I love my boyfriend>]>
>>> album1.song_set.create(song_title='I love bacon', file_type='avi')
<Song: I love bacon>
>>> song = album1.song_set.create(song_title='I love bacon', file_type='avi')
>>> song.song_title
'I love bacon'
>>> song.album
<Album: Red - Taylor Swift>
>>> album1.song_set.count()
3
------------------------------------
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Detail</title>
</head>
<body>
<img src="{{album.album_logo}}">
<h1>{{album.album_title}}</h1>
<h3>{{album.artist}}</h3>
<ul>
{% for song in album.song_set.all %}
<li>{{song.song_title}} - {{song.file_type}}</li>
{% endfor %}
</ul>
</body>
</html>
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