目前,用于创建新文章的添加文章页面非常接近我们想要的 – 它只是股票Django admin,我们使用filter_horizontal来设置两个m2m关系.
下一步是在每个m2m关系上添加“评级”字段作为中间字段.
所以,我们的models.py的一个例子
class Article(models.Model): Title = models.CharFIEld(max_length=100) publication_date = models.DateFIEld() entry_date = models.DateFIEld(auto_Now_add=True) abstract = models.TextFIEld() # Can we restrict this to 450 characters? category = models.ForeignKey(category) subject = models.ForeignKey(Subject) weekly_summary = models.BooleanFIEld(help_text = 'Should this article be included in the weekly summary?') source_publication = models.ForeignKey(Publication) page_number = models.CharFIEld(max_length=30) article_softcopy = models.fileFIEld(upload_to='article_scans',null=True,blank=True,help_text='Optionally upload a soft-copy (scan) of the article.') url = models.URLFIEld(null=True,help_text = 'Enter a URL for the article. Include the protocl (e.g. http)') firm = models.ManyToManyFIEld(Firm,through='Firmrating') spokesperson = models.ManyToManyFIEld(Spokeperson,through='Spokespersonrating') def __unicode__(self): return self.Titleclass Firm(models.Model): name = models.CharFIEld(max_length=50,unique=True) homepage = models.URLFIEld(verify_exists=False,help_text='Enter the homepage of the firm. Include the protocol (e.g. http)') def __unicode__(self): return self.name class Meta: ordering = ['name']class Spokeperson(models.Model): Title = models.CharFIEld(max_length=100) first_name = models.CharFIEld(max_length=50) last_name = models.CharFIEld(max_length=50) def __unicode__(self): return self.first_name + ' ' + self.last_name class Meta: ordering = ['last_name','first_name']class Firmrating(models.Model): firm = models.ForeignKey(Firm) article = models.ForeignKey(Article) rating = models.IntegerFIEld()class Spokespersonrating(models.Model): firm = models.ForeignKey(Spokesperson) article = models.ForeignKey(Article) rating = models.IntegerFIEld()
这里的问题是,一旦我们将我们的公司和发言人字段更改为“通过”并使用中介,我们的添加文章页面就不再具有filter_horizontal控件来向文章添加Firms / Spokeperson关系 – 它们完全消失.你根本看不到它们.我不知道为什么会这样.
我希望有一些方法继续使用酷filter_horizontal小部件来设置关系,并以某种方式只是嵌入下面的另一个字段来设置评级.但是,我不知道如何做到这一点,同时仍然利用Django管理员.
我在这里看到一篇关于覆盖Django管理员中的单个小部件的文章:
http://www.fictitiousnonsense.com/archives/22
但是,我不确定该方法是否仍然有效,而且我不确定是否将它应用于此处,将FK应用于中间模型(它基本上是内联的?).
当然有一种简单的方法可以做到这一切吗?
干杯,
胜利者
您必须在Modeladmin中覆盖此方法:
def formfIEld_for_manytomany(self,db_fIEld,request=None,**kwargs): """ Get a form FIEld for a ManyToManyFIEld. """ # If it uses an intermediary model that isn't auto created,don't show # a fIEld in admin. if not db_fIEld.rel.through._Meta.auto_created: return None # return something suitable for your needs here! db = kwargs.get('using') if db_fIEld.name in self.raw_ID_fIElds: kwargs['Widget'] = Widgets.ManyToManyRawIDWidget(db_fIEld.rel,using=db) kwargs['help_text'] = '' elif db_fIEld.name in (List(self.filter_vertical) + List(self.filter_horizontal)): kwargs['Widget'] = Widgets.FilteredSelectMultiple(db_fIEld.verbose_name,(db_fIEld.name in self.filter_vertical))总结
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