我正在搜索页面上,医生可以在其中搜索name
,start_date
和end_date
的患者。这里的start_date和end_date是上传任何文档的日期范围。结果应返回名称为name
且文件在start_date
和end_date
之间上传的所有患者。
class Document(models.Model):
name = models.CharField(max_length=15, blank=True)
document = models.FileField(upload_to='documents/')
uploaded_at = models.DateTimeField(auto_now_add=True)
patient = models.ForeignKey(to=Patient, on_delete=models.CASCADE, unique=False)
class Meta:
unique_together = ('name', 'document', 'patient')
# many document can have same patient
def __str__(self) -> str:
return f'{self.name}'
def __repr__(self) -> str:
return f'{self.name}'
class Patient(models.Model):
# required fields
first_name = models.CharField(max_length=55, blank=False, null=False)
last_name = models.CharField(max_length=55, blank=False, null=False)
email = models.EmailField(max_length=255, blank=False, null=False, unique=True)
# not required fields
address = models.TextField(max_length=255, blank=True, null=True)
postal_zip = models.IntegerField(max_length=255, blank=True, null=True)
city = models.CharField(max_length=255, blank=True, null=True)
country = models.CharField(max_length=255, blank=True, null=True)
phone_number = models.IntegerField(max_length=17, blank=True, null=True) # mobile
alternate_number = models.IntegerField(max_length=17, blank=True, null=True) # alternate
def __str__(self) -> str:
return f"{self.first_name} {self.last_name}"
def __repr__(self) -> str:
return f"{self.first_name} {self.last_name}"
我可以像这样在特定日期之间上传所有文档
documents = Document.objects.filter(
uploaded_at__gte=start_date
).intersection(
Document.objects.filter(uploaded_at__lte=end_date)
)
但是我想不出一种将以上结果与此结合的方法
query = Patient.objects.filter(
Q(first_name__icontains=search_key) |
Q(last_name__icontains=search_key) |
Q(email__icontains=search_key) |
Q(city__icontains=search_key) |
Q(phone_number__icontains=search_key) |
Q(alternate_number__icontains=search_key) |
Q(country__icontains=search_key)
)
答案 0 :(得分:1)
您可以使用双下划线来浏览关系,因此在这里我们可以过滤文档范围在给定范围内的Patient
s:
# Patients which match the search_key, and have
# documents uploaded in the (start_date, end_date) range
query = Patient.objects.filter(
Q(first_name__icontains=search_key) |
Q(last_name__icontains=search_key) |
Q(email__icontains=search_key) |
Q(city__icontains=search_key) |
Q(phone_number__icontains=search_key) |
Q(alternate_number__icontains=search_key) |
Q(country__icontains=search_key),
document__uploaded_at__range=(start_date, end_date)
).distinct()
正如您所评论的,.distinct()
可以防止您多次检索同一位患者(在该范围内,每Document
次)。
或Document
的{{1}}符合给定条件的>
Patient