django表单添加返回“ NoneType”对象的项目不是可调用错误

问题描述

| 我的add_player视图采用team_season_id参数并显示未绑定的表单。

def add_player( request,team_season_id ):
    team_season = get_object_or_404( TeamSeasonConference,pk=team_season_id )

    player_form = PlayerForm()
    return render_to_response( \'backoffice/organization/add_player.html\',{
        \'player_form\': player_form,\'team_season\': team_season,\'player\': None
    },context_instance=RequestContext( request ) )

这是回溯：

Traceback:
File \"/usr/lib/pymodules/python2.6/django/core/handlers/base.py\" in get_response
  92.                 response = callback(request,*callback_args,**callback_kwargs)
File \"/mypath/apps/account/decorators.py\" in __call__
  73.             return self.view_func(request,*args,**kwargs)
File \"/mypath/apps/backoffice/views.py\" in add_player
  877.     player_form = PlayerForm()
File \"/usr/lib/pymodules/python2.6/django/forms/models.py\" in __init__
  218.             self.instance = opts.model()

Exception Type: TypeError at /backoffice/roster/add/player/2/
Exception Value: \'nonetype\' object is not callable

这是PlayerForm：

class PlayerForm( forms.ModelForm ):
    CLASS_CHOICES = (
        (\'\',\'-----\'),(\'FR\',\'freshman\'),(\'RS-FR\',\'red-shirt freshman\'),(\'SO\',\'sophomore\'),(\'RS-SO\',\'red-shirt sophomore\'),(\'JR\',\'junior\'),(\'RS-JR\',\'red-shirt junior\'),(\'SR\',\'senior\'),(\'RS-SR\',\'red-shirt senior\'),)

first_name = forms.CharField( max_length=100,required=False,label=\"First\" )
last_name = forms.CharField( max_length=100,label=\"Last\" )

jersey = forms.IntegerField( min_value=0,label=\"Jersey\" )
height = forms.CharField( max_length=10,required=False )
weight = forms.IntegerField( required=False,min_value=0 )
age = forms.IntegerField( required=False,min_value=0 )
year = forms.TypedChoiceField( choices=CLASS_CHOICES,empty_value=\'\' )
varsity_letters = forms.IntegerField( required=False,min_value=0 )
position = forms.CharField( max_length=20,required=False )
hometown = forms.CharField( required=False )
major = forms.CharField( max_length=100,required=False )
freeform_school = forms.CharField( required=False,label=\"HS\" )
description = forms.CharField (widget=forms.Textarea,required=False )
HSSN = forms.CharField( max_length=8,required=False )
mugshot = forms.FileField( widget=forms.Fileinput(),required=False )
team_season_connection = forms.ModelMultipleChoiceField(queryset=TeamSeasonConference.objects.filter(team = 1),widget=forms.SelectMultiple)

    def save(self,commit=True,request=None,user=None):
        player = super( PlayerForm,self ).save( commit=False )

        if commit:
            # save the player
            player.save()
            return player

这是播放器模型

class Player( models.Model ):

CLASS_CHOICES = (
    (\'FR\',)

first_name = models.CharField( max_length=100 )
last_name = models.CharField( max_length=100 )
suffix = models.CharField( max_length=5,blank=True )
nickname = models.CharField( max_length=100,blank=True )
slug = models.SlugField( max_length=200,blank=True,help_text=\"Used for associating content. (lowercase,hyphens sted spaces,no punctuation)\" )

team_season_connection = models.ManyToManyField( TeamSeasonConference,related_name=\'career_roster\',blank=True)
team_season = models.ForeignKey( TeamSeasonConference,related_name=\'roster\',blank=True )
height = models.CharField( max_length=10,blank=True )
weight = models.PositiveIntegerField( blank=True,null=True )
age = models.PositiveIntegerField( blank=True,null=True )
year = models.CharField( max_length=5,choices=CLASS_CHOICES,db_index=True )
varsity_letters = models.PositiveIntegerField( blank=True,null=True )
position = models.CharField( max_length=20,blank=True )
jersey = models.PositiveIntegerField( blank=True,null=True )
mugshot = models.ForeignKey( \'content.Photo\',null=True,blank=True )
profile = models.ForeignKey( \'content.Story\',help_text=\"Optionally link player to a profile story.\")

major = models.CharField( max_length=100,blank=True)

freeform_school = models.CharField( max_length=100,help_text=\"Take care to enter the school consistantly across players.\" )
hometown = models.CharField( max_length=100,help_text=\"Town and state,i.e. Orlando,FL.\" )
offered_scholarship = models.BooleanField( help_text=\"Check if user has a scholarship offer.\" )
description = models.TextField( blank=True )

antagonist = models.BooleanField( help_text=\"To be used as indicator of whether this player is the season\'s antagonist\" )
pluck_user = models.ForeignKey ( \'auth.User\',help_text=\"Optionally link to user login\")

# reverse generic relations
scrapbooks = generic.GenericRelation( Scrapbook )

    

解决方法

        您正在使用

ModelForm

，但没有与之关联的模型。根据文档创建具有

model

属性的内部

Meta

类：

class PlayerForm(forms.ModelForm):
    class Meta:
        model = models.Player # or whatever

另外，如果您确实不需要

save

，请不要重写它。