139

我有以下型号models.py：

class ListinoTraduttore(models.Model):
        traduttore = models.ForeignKey('Traduttore', related_name='Traduttore')
        linguaDa = models.ForeignKey(Lingua, related_name = "linguaDa")
        linguaA = models.ForeignKey(Lingua, related_name = "linguaA")
        prezzoParola = models.CharField(max_length=50, blank=True)
        prezzoRiga = models.CharField(max_length=50, blank=True)
        scontoCat = models.CharField(max_length=50, blank=True)
        scontoFuzzy = models.CharField(max_length=50, blank=True)
        scontoRipetizioni = models.CharField(max_length=50, blank=True)
        class Meta:
                verbose_name_plural = "Listini Traduttori"
        def __unicode__(self):
                return u"%s Da %s A %s Parola=%s Riga=%s ScontoCAT=%s ScontoFuzzy=%s ScontoRipetizioni=%s" % (self.traduttore, self.linguaDa, self.linguaA, self.prezzoParola, self.prezzoRiga, self.scontoCat, self.scontoFuzzy, self.scontoRipetizioni)


class Traduttore(models.Model):
        nome = models.CharField(nomeString, max_length=50)
        cognome = models.CharField(cognomeString, max_length=50)
        nomeAzienda = models.CharField(nomeAziendaString, max_length=50, blank=True)
        codiceFiscale = models.CharField(codiceFiscaleString, max_length=50, blank=True)
        partitaIva = models.CharField(partitaIvaString, max_length=50, blank=True)
        indirizzo = models.CharField(indirizzoString, max_length=50, blank=True)
        telefono = models.CharField(telefonoString, max_length=50, blank=True)
        fax = models.CharField(faxString, max_length=50, blank=True)
        email = models.EmailField(max_length=50, blank=True)
        referente = models.CharField(referenteString, max_length=50, blank=True)
        valuta = models.ForeignKey(Valuta)
        metodoPagamento = models.ForeignKey(MetodoPagamento)
        datiBancari = models.CharField(datiBancariString, max_length=50, blank=True)
        programmiUtilizzati = models.ManyToManyField(Programma, blank=True)
        note = models.CharField(max_length=200, blank=True)
        listino = models.ManyToManyField(ListinoTraduttore, related_name='listino', blank=True)
        def __unicode__(self):
                return u"%s %s %s" % (self.nome, self.cognome, self.nomeAzienda)
        class Meta:
                verbose_name_plural = "Traduttori"

在admin.py我有以下内容时：

class TraduttoreAdmin(admin.ModelAdmin):
        list_display = ("nome", "cognome", "nomeAzienda")
        search_fields = ["nome", "cognome", "nomeAzienda"]

class ListinoTraduttoreAdmin(admin.ModelAdmin):
        list_display = ("traduttore", "linguaDa", "linguaA", "prezzoParola", "prezzoRiga", "scontoCat", "scontoFuzzy", "scontoRipetizioni")
        search_fields = ['traduttore__nome", "linguaDa", "linguaA"]

但是，当我尝试在ListinoTraduttore表的管理页面中进行搜索时，出现以下错误：

TypeError at /admin/itrad/listinotraduttore/
Related Field has invalid lookup: icontains
Request Method: GET
Request URL:    http://127.0.0.1:8000/admin/itrad/listinotraduttore/?q=Fenicio
Django Version: 1.4.1
Exception Type: TypeError
Exception Value:    
Related Field has invalid lookup: icontains
Exception Location: /Library/Python/2.7/site-packages/django/db/models/fields/related.py in get_prep_lookup, line 142
Python Executable:  /usr/bin/python
Python Version: 2.7.2
Python Path:    
['/Users/nicolac/Documents/DjangoProjects/mysite',
 '/Library/Python/2.7/site-packages/pip-1.1-py2.7.egg',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC',
 '/Library/Python/2.7/site-packages']
4

9 回答 9

181

您是否尝试过在search_fields中添加__fieldname这些Lingua引用，例如：ListinoTraduttoreAdmin

class ListinoTraduttoreAdmin(admin.ModelAdmin):        
    list_display = ("traduttore", "linguaDa", "linguaA", "prezzoParola", "prezzoRiga", "scontoCat", "scontoFuzzy", "scontoRipetizioni")
    search_fields = ['traduttore__nome", "linguaDa__field1", "linguaA_field2"]
于 2012-08-14T22:21:50.913 回答
165

这是为了（希望）简化答案。

不要过滤 ForeignKey 字段本身！

改变这个

search_fields = ['foreignkeyfield']

对此（注意两个下划线）

search_fields = ['foreignkeyfield__name']

name表示与我们有 ForeignKey 关系的表中的字段名称。

希望这可以帮助

于 2016-04-29T14:01:05.803 回答
73

改用 Django 的双下划线约定。文档 foreignkeyfield__name

Make sure you are not adding any Foreignkey or ManyToManyField to your search_field directly.

class ListinoTraduttoreAdmin(admin.ModelAdmin):
    list_display = ("traduttore", "linguaDa", "linguaA", "prezzoParola", "prezzoRiga", "scontoCat", "scontoFuzzy", "scontoRipetizioni")
    search_fields = ['traduttore__nome", "linguaDa__field1", "linguaA__field2"]
于 2013-04-07T14:25:55.413 回答
11

需要双下划线

class exampleAdmin(admin.ModelAdmin):
 search_field = ('yourforeignkeyname__choosefieldnameinyourforeignkey')
于 2020-05-21T20:00:17.700 回答
2

这对我有用。

使用 my_related_object__first_attribute 搜索外键字段：

search_fields = ('author__username', 'title')
from models
author = models.ForeignKey(User, on_delete=models.CASCADE,   related_name='blog_posts2')
于 2020-03-11T12:37:07.307 回答
1

这可能无法回答最初的问题，但是，我经常遇到类似的invalid lookup错误，因为我不小心_set在查找中使用了，例如，<model_name>_set而不是<model_name>.

基本上，我倾向于将related_query_name与default_related_name混淆 ，后者确实包括_set（另请参阅查询文档和相关管理器文档）。

从查找文档：

它也可以向后工作。虽然它可以自定义，但默认情况下，您在查找中使用模型的小写名称引用“反向”关系。

（我的重点）

令人困惑的是，默认值 related_name(ie <model_name>_set) 与默认值 related_query_name(ie <model_name>) 不同，但如果您设置自定义 related_name（或default_related_name通过模型Meta选项），它也将用作默认值related_query_name（如文档中所述）。

于 2020-10-28T15:35:41.710 回答
1

此错误主要发生在您尝试使用 ForeignKey 过滤时。我认为错误出现在 search_filelds 中。核实。search_fields = ['traduttore__nome", "linguaDa", "linguaA"]。这两个 ForeignKey ("linguaDa", "linguaA") 是问题。删除它们。我认为这有帮助。

于 2020-09-09T01:11:24.160 回答
0

可能很奇怪

search_fields = ['traduttore__nome']

像这样给出单引号会产生错误。

search_fields = ["traduttore__nome"]

用双引号给出将解决问题

foreignkeyfield__lookupfield  - this is the format
于 2021-05-18T17:24:56.533 回答
-3

添加 admin.py

admin.site.register(Traduttore, TraduttoreAdmin)
admin.site.register(ListinoTraduttore, ListinoTraduttoreAdmin)

查看链接https://docs.djangoproject.com/en/dev/intro/tutorial02/

于 2012-08-01T08:44:25.127 回答