from django.contrib.auth.models import User
from django.db import models
from django.contrib import admin
from django.template.defaultfilters import escape
from django.utils.translation import ugettext as _
from django.utils.encoding import force_unicode
from django.http import HttpResponse, HttpResponseRedirect
from django.core.urlresolvers import reverse
class DateTime(models.Model):
datetime = models.DateTimeField(auto_now_add=True)
def __unicode__(self):
return unicode(self.datetime.strftime("%b %d, %Y, %I:%M %p"))
class Country(models.Model):
country = models.CharField(max_length=50)
def __unicode__(self):
return unicode(self.country)
class Artist(models.Model):
artist = models.CharField(max_length=50)
country = models.ForeignKey(Country, blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
notes = models.TextField()
def __unicode__(self):
return artist
class Song(models.Model):
name = models.CharField(max_length=200)
artist = models.ForeignKey(Artist, blank=True, null=True)
# language = models.ForeignKey(Country, blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
notes = models.TextField()
def __unicode__(self):
return song
class FileType(models.Model):
file_type = models.CharField(max_length=3)
description = models.TextField()
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
notes = models.TextField()
def __unicode__(self):
return file_type
class Level(models.Model):
level = models.CharField(max_length=3)
description = models.TextField()
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
notes = models.TextField()
def __unicode__(self):
return level
class MusicSheet(models.Model):
version = models.CharField(max_length=2)
song = models.ForeignKey(Song, blank=True, null=True)
artist = models.ForeignKey(Artist, blank=True, null=True)
file_type = models.ForeignKey(FileType, blank=True, null=True)
level = models.ForeignKey(Level, blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
text = models.TextField()
notes = models.TextField()
#include votes
#include comments
#include registration code
########################################################################################################################
######################################## ADMIN STUFF ###################################################################
########################################################################################################################
class MusicSheetAdmin(admin.ModelAdmin):
list_display = ["version", "song", "artist", "file_type", "level", "user" , "created", "text", "notes"]
search_fields = ["version"]
class MusicSheetInline(admin.TabularInline):
model = MusicSheet
class DateAdmin(admin.ModelAdmin):
list_display = ["datetime"]
inlines = [MusicSheetInline]
def response_add(self, request, obj, post_url_continue='../%s/'):
""" Determines the HttpResponse for the add_view stage. """
opts = obj._meta
pk_value = obj._get_pk_val()
msg = "Song(s) were added successfully."
# Here, we distinguish between different save types by checking for
# the presence of keys in request.POST.
if request.POST.has_key("_continue"):
self.message_user(request, msg + ' ' + _("You may edit it again below."))
if request.POST.has_key("_popup"):
post_url_continue += "?_popup=1"
return HttpResponseRedirect(post_url_continue % pk_value)
if request.POST.has_key("_popup"):
return HttpResponse(
'<script type="text/javascript">opener.dismissAddAnotherPopup(window, "%s", "%s");'
'</script>' % (escape(pk_value), escape(obj)))
elif request.POST.has_key("_addanother"):
self.message_user(request, msg + ' ' + (_("You may add another %s below.") %
force_unicode(opts.verbose_name)))
return HttpResponseRedirect(request.path)
else:
self.message_user(request, msg)
for music_sheet in MusicSheet.objects.filter(created=obj):
if not music_sheet.user:
music_sheet.user = request.user
music_sheet.save()
return HttpResponseRedirect(reverse("admin:musicsheet_musicsheet_changelist"))
class CountryAdmin(admin.ModelAdmin):
list_display = ["country"]
search_fields = ["country"]
class CountryInline(admin.TabularInline):
model = MusicSheet
class SongAdmin(admin.ModelAdmin):
list_display = ["name", "artist", "user", "created", "notes"]
search_fields = ["name", "artist"]
class SongInline(admin.TabularInline):
model = MusicSheet
class ArtistAdmin(admin.ModelAdmin):
list_display = ["artist", "country", "user", "created", "notes"]
search_fields = ["artist", "country"]
class ArtistInline(admin.TabularInline):
model = MusicSheet
class FileTypeAdmin(admin.ModelAdmin):
list_display = ["file_type", "description", "user", "created", "notes"]
search_fields = ["file_type"]
class FileTypeInline(admin.StackedInline):
model = MusicSheet
class LevelAdmin(admin.ModelAdmin):
list_display = ["level", "description", "user", "created", "notes"]
search_fields = ["level"]
class LevelInline(admin.StackedInline):
model = MusicSheet
admin.site.register(MusicSheet, MusicSheetAdmin)
admin.site.register(Country, CountryAdmin)
admin.site.register(Song, SongAdmin)
admin.site.register(Artist, ArtistAdmin)
admin.site.register(FileType, FileTypeAdmin)
admin.site.register(Level, LevelAdmin)
admin.site.register(DateTime, DateAdmin)
#1 楼
免责声明：我不是Django专家。这是我的想法，它的价值是什么。公用字段：
user，created和nodes几乎出现在每个班级。我会考虑使用这三个字段创建一个抽象基类。字段名称：为了便于阅读，我将
Artist.artist更改为Artist.name，将*.user更改为*.creator。文件扩展名：偶尔有更多少于3个字符（例如：
.jpeg，.java）。索引：我至少要将
db_index=True添加到name字段中。 。这称为冗余，通常是一件坏事。主键，唯一的约束：您可能不希望两个具有相同
MusicSheet.song的Song.artist，所以该字段是主键（MusicSheet.artist）的不错选择。我不确定FileType应该建模什么，但是我猜想它的file_type也是主键的理想选择。为primary_key=True添加Level，或添加带有国家/地区代码的主键。DateTime：我认为不需要此类。只需将出现的所有
level替换为unique=True。#2 楼
我想到了一些事情：丢失DateTime模型，而是直接将DateTimeField添加到需要它的模型中。除了为最简单的操作确保额外的数据库联接外，ForeignKey不会给您带来任何好处。
您可能只是这样做，因此可以将此代码粘贴到一块，但如果没有，则：您应该将管理代码放在文件中在您的应用程序内部称为admin.py。这样，您可以使用admin自动发现功能
在DateAdmin中，您可以覆盖response_add方法来设置用户/创建者字段（据我所知）。通过覆盖save_model方法，可以轻松完成此操作。
#3 楼
您可以将它们集成到模型中，而不是最后的Admin类列表（很长），因此：
class MusicSheet(models.Model):
version = models.CharField(max_length=2)
song = models.ForeignKey(Song, blank=True, null=True)
artist = models.ForeignKey(Artist, blank=True, null=True)
file_type = models.ForeignKey(FileType, blank=True, null=True)
level = models.ForeignKey(Level, blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
text = models.TextField()
notes = models.TextField()
class MusicSheetAdmin(admin.ModelAdmin):
list_display = ["version", "song", "artist", "file_type", "level", "user" , "created", "text", "notes"]
search_fields = ["version"]
class MusicSheetInline(admin.TabularInline):
model = MusicSheet
admin.site.register(MusicSheet, MusicSheetAdmin)
可以简化为（并消除）为：
class MusicSheet(models.Model):
version = models.CharField(max_length=2)
song = models.ForeignKey(Song, blank=True, null=True)
artist = models.ForeignKey(Artist, blank=True, null=True)
file_type = models.ForeignKey(FileType, blank=True, null=True)
level = models.ForeignKey(Level, blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
created = models.ForeignKey(DateTime)
text = models.TextField()
notes = models.TextField()
class Admin:
list_display = ["version", "song", "artist", "file_type", "level", "user" , "created", "text", "notes"]
search_fields = ["version"]
确保
class Admin在主类内。如果您确实要它们是分开的，管理类和注册属于一个单独的文件
admin.py。 （您必须导入模型from myapp.models import *）您的某些
ForeignKey都具有blank=True和null=True。这通常不是一个好主意。是否要允许它们为空（无值）或空白（空值）？查看您的代码，我会说您想要null=True，但我不确定。尝试一个，然后再尝试另一个，然后看看哪个可以满足您的要求。我非常怀疑你们俩都需要。通常，我只将blank=True用于CharField，因此您可以使用空字符串而不是空的数据库字段。我无法弄清楚
DateAdmin的含义。如上面建议的那样，当您切换到DateTimeField时，您可能不需要它，但我想在拨打电话之前先了解其预期的用途。
评论
我建议您突出显示您要反馈的地方。除此之外，从长远来看，对导入和（也许）字段名称进行排序将使您的生活更轻松。@TryPyPY-通常围绕模型本身，类的结构，如何使它更有效？越来越好？如何将这段代码从newb转到pro