带有通过参数的 Django 外键

Question

对不起，标题错了，我试图改变它，但我不能。这并不意味着“通过”参数，而是“到”参数。

以下模型使我的代码

class DocAide(models.Model):
    id = models.AutoField(primary_key=True)
    pulse = models.DecimalField('Pulse', max_digits=3, decimal_places=0, blank=True, null=True)
    weight = models.DecimalField('Weight (kg)', max_digits=3, decimal_places=0, blank=True, null=True)
    bp_sys = models.DecimalField('BP Sys', max_digits=3, decimal_places=0, blank=True, null=True)
    bp_dia = models.DecimalField('BP Dia', max_digits=3, decimal_places=0, blank=True, null=True)
    temperature = models.DecimalField('Temp. deg C', max_digits=2, decimal_places=1, blank=True, null=True)

    prescriptions = models.ForeignKey(PrescriptionLine, on_delete=models.CASCADE, blank=True, null=True)        

    scans = models.ManyToManyField(Scan, blank=True)
    tests = models.ManyToManyField(LabTest,  blank=True)
    date = models.DateField(editable=False, default=timezone.now)
    patient = models.ForeignKey(Patient, on_delete=models.CASCADE)
    created_by = models.ForeignKey(Doctor, on_delete=models.CASCADE, blank=True, null=True)
    no_charge = models.BooleanField('No Charge from Patient', default=False)
    doctors_notes = models.TextField('Patient is complaining about:', default='')
    part_to_scan = models.CharField(max_length=100, default='N/A', blank=True, null=True)
    part_to_xray = models.CharField(max_length=100, default='N/A', blank=True, null=True)
    note = models.TextField(max_length=100, default='')

和

class PrescriptionLine(models.Model):
    drug = models.ForeignKey(to=Drug, related_name='prescriptionlines', on_delete=models.CASCADE)

    morning = models.CharField(validators=[int_list_validator], max_length=3, default=0)
    midday = models.CharField(validators=[int_list_validator], max_length=3, default=0)
    evening = models.CharField(validators=[int_list_validator], max_length=3, default=0)
    night = models.CharField(validators=[int_list_validator], max_length=3, default=0)
    days = models.CharField(validators=[int_list_validator], max_length=3, default=0)
    tablets = models.CharField(validators=[int_list_validator], max_length=3, default=0)

我的表单如下所示:

class DocAideForm(forms.ModelForm):

    class Media:
        css = {'all': ('/static/admin/css/widgets.css',), }
        js = ('/admin/jsi18n/',)

    class Meta:
        model = DocAide
        fields = [  # 'no_charge',
                  'doctors_notes', 'scans', 'part_to_xray', 'part_to_scan', 'tests']

在 view.py 我有 inlineformset_factory

PrescriptionLineFormSet = inlineformset_factory(PrescriptionLine, DocAide, extra=1, fields=['drug', 'morning'])

通过这种构造，DocAide 的错误是“药物”、“早上”未知字段。

Answer 1

要使用内联创建表单，您必须使用 inlineformset_factory .
您可以在 official django documentation 中查看如何使用它的示例。 .

模型.py:

from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=100)

class Book(models.Model):
    author = models.ForeignKey(Author, on_delete=models.CASCADE)
    title = models.CharField(max_length=100)

View .py

from django.forms import inlineformset_factory
BookFormSet = inlineformset_factory(Author, Book, fields=('title',))
author = Author.objects.get(name='Mike Royko')
formset = BookFormSet(instance=author)