python之不允许同时指定 'fields' 和 'form_class'

我有以下表单，我想用 Django 脆皮表单呈现它。

这是我的views.py

class RehabilitationSessionCreate(CreateView): 
    model = RehabilitationSession 
    form_class = RehabilitationSessionForm() 
 
    success_url = reverse_lazy('rehabilitationsessions:list') 
 
    fields = ['patient','medical','therapist','status','date_session_begin','upper_extremity', 
              'pain_extremity','affected_segment','movement','metrics','time_movement','games', 
              'game_levels','iterations','errors_numbers_game','time_level_acomplished', 
              'patient_behavior','observations','date_session_end','period',] 
 
class RehabilitationSessionUpdate(UpdateView): 
    model = RehabilitationSession 
    success_url = reverse_lazy('rehabilitationsessions:list') 
    fields = ['patient', 'medical', 'therapist', 'status', 'date_session_begin', 'upper_extremity', 
              'pain_extremity', 'affected_segment', 'movement', 'metrics', 'time_movement', 'games', 
              'game_levels', 'iterations', 'errors_numbers_game', 'time_level_acomplished', 
              'patient_behavior', 'observations', 'date_session_end', 'period', ] 

这是我的urls.py 项目主文件:

from django.conf.urls import url, include 
urlpatterns = [ 
 
    url(r'^sesiones-de-rehabilitacion/', include('medical_encounter_information.urls', namespace='rehabilitationsessions')), 
    # Call the medical_encounter_information/urls.py 
 
] 

这是我的medical_encounter_information/urls.py

from django.conf.urls import include, url, patterns 
from .views import RehabilitationSessionCreate 
 
urlpatterns = [ 
 
    url(r'^$', RehabilitationSessionList.as_view(), name='list'), 
 
    url(r'^(?P<pk>\d+)$', RehabilitationSessionDetail.as_view(), name='detail'), 
 
    url(r'^nuevo/', RehabilitationSessionCreate.as_view(), name='new'), 
 
    url(r'^editar/(?P<pk>\d+)$', RehabilitationSessionUpdate.as_view(), name='edit'), 
 
    url(r'^borrar/(?P<pk>\d+)$', RehabilitationSessionDelete.as_view(), name='delete'), 
 
] 

在我的 forms.py 文件中我有:

class RehabilitationSessionForm(forms.ModelForm): 
 
    def __init__(self, *args, **kwargs): 
        # user = kwargs.pop('user', None) 
        super(RehabilitationSessionForm, self).__init__(*args, **kwargs) 
        self.helper = FormHelper() 
        self.helper.add_input(Submit('submit', u'Save')) 
 
    def save(self, commit=True): 
        rehabilitation_session = super(RehabilitationSessionForm, self).save(commit=False) 
        patient = self.cleaned_data['patient'] 
 
        if commit: 
            rehabilitation_session.save() 
 
        return rehabilitation_session 
 
    class Meta: 
        model = RehabilitationSession 
 
        widgets = { 
            'pain_extremity':forms.RadioSelect, 
            'upper_extremity':forms.RadioSelect 
        } 
        fields = '__all__' 

模板 medical_encounter_information/templates/medical_encounter_information/rehabilitationsession_form.html 是:

{% extends 'base.html' %} 
{% load crispy_forms_tags %} 
{% block title %}Crear Registro{% endblock %} 
{% block content %} 
 
<div> 
    {% crispy form %} 
    {% csrf_token %} 
 
</div> 
{% endblock %} 

当我在浏览器中输入 url http://localhost:8000/sesiones-de-rehabilitacion/nuevo/ 时，我得到以下信息:

 File "/home/bgarcial/.virtualenvs/nrhb_dev/lib/python3.5/site-packages/django/views/generic/edit.py", line 138, in get_form_class 
    "Specifying both 'fields' and 'form_class' is not permitted." 
django.core.exceptions.ImproperlyConfigured: Specifying both 'fields' and 'form_class' is not permitted. 
[11/Jul/2016 15:44:29] "GET /sesiones-de-rehabilitacion/nuevo/ HTTP/1.1" 500 100235 

但是，当我在浏览器中输入 url http://localhost:8000/sesiones-de-rehabilitacion/editar/1 时，我会看到以下内容:

因为 View ​​sesiones-de-rehabilitacion/editar/1 (RehabilitationSessionUpdate) 被渲染，并且 View sesiones-de-rehabilitacion/nuevo/ (RehabilitationSessionCreate) 没有被渲染知道一起使用相同的模板？

请您参考如下方法:

如错误所述，您不能同时为您的 View 设置 form_class 和 fields。您可以设置 form_class

class RehabilitationSessionCreate(CreateView): 
    model = RehabilitationSession 
    form_class = RehabilitationSessionForm  # Note you should *not* have () 
    success_url = reverse_lazy('rehabilitationsessions:list') 

或者你可以设置字段:

class RehabilitationSessionCreate(CreateView): 
    model = RehabilitationSession 
    fields = ['patient', ...] 
    success_url = reverse_lazy('rehabilitationsessions:list') 

您不需要同时设置 fields 和 form_class，因为您可以在表单本身上设置 fields:

class RehabilitationSessionForm(forms.ModelForm): 
    class Meta: 
        fields = ['patient', ... ]