Django:未应用字段验证器和唯一约束

我有一个带有pat字段的随机化模型，该模型应该是唯一的，并且具有指定的格式。 我定义了unique=true和and验证器，但两者都不适用

例如，FRA-0001应该是有效的，如果我尝试注册此代码两次，它将在我的表单上引发一条错误验证消息（但不是崩溃数据库）

但目前，我可以注册FRA，例如，如果我注册两次，我会引发数据库错误UNIQUE Controint failed

models.py

class Randomisation(models.Model):

    ...
    pat = models.CharField("Patient number", max_length=8, unique=True, null=True, blank=True,
        validators = [
            RegexValidator(
                regex='^[A-Z]{3}-[0-9]{4}$',
                message= 'L\'identifiant doit être au format XXX-0000',
                code='invalid_participant_id'
            ),
        ],
    )
...

forms.py

class RandomizationEditForm(forms.Form):

    def __init__(self, request, *args, **kwargs):
        super(RandomizationEditForm, self).__init__(*args, **kwargs)
        self.user_country = Pays.objects.get(pay_ide = request.session.get('user_country'))
        # self.language = request.session.get('language')
        # print(self.language)
        self.user_site_type = request.session.get('user_site_type')        
        PAYS = Pays.options_list(self.user_country,self.user_site_type,'fr')
        SEXE = Thesaurus.options_list(2,'fr')
        STRATE_1 = Thesaurus.options_list(3,'fr')
        STRATE_2 = Thesaurus.options_list(4,'fr')
        YES = [(None,''),(0,'Non'),(1,'Oui'),]

        self.fields["pat"] = forms.CharField(label = "Numéro patient (XXX-0000)")
        self.fields['pat'].widget.attrs.update({
            'autocomplete': 'off'
        })
        self.fields["ran_nai"] = forms.IntegerField(label = "Date de naissance (année)", widget=forms.TextInput)
        self.fields['ran_nai'].widget.attrs.update({
            'autocomplete': 'off'
        })
        self.fields["ran_sex"] = forms.ChoiceField(label = "Sexe", widget=forms.Select, choices=SEXE)
        self.fields["ran_st1"] = forms.ChoiceField(label = "Gravité de la maladie COVID-19", widget=forms.Select, choices=STRATE_1)
        self.fields["ran_bug"] = forms.BooleanField(label = "Recours à la procédure de secours ?", required = False)
        self.fields["ran_dem_nom"] = forms.CharField(label = "Nom de la personne qui demande la randomisation", required = False, initial=None)
        self.fields['ran_dem_nom'].widget.attrs.update({
            'autocomplete': 'off'
        })
        self.fields["ran_dem_dat"] = forms.DateField(
            # input_formats=settings.DATE_INPUT_FORMATS,
            label = "Date de la demande",
            initial = timezone.now(),
            required = False,
            )
        self.fields['ran_dem_dat'].widget.attrs.update({
            'autocomplete': 'off'
        })

    # def clean_pat(self):
    #     data = self.cleaned_data['pat']
    #     if len(data) < 8:
    #         raise forms.ValidationError("Merci de contrôler la numéro patient")
    #     return data

    def clean_ran_nai(self):
        data = self.cleaned_data['ran_nai']
        if data > 2003:
            raise forms.ValidationError("Merci de contrôler la date de naissance")
        return data

    def clean_ran_dem_dat(self):
        data = self.cleaned_data['ran_dem_dat']
        entrydate = datetime.datetime.strptime(str(data), "%Y-%m-%d")
        currentdate = datetime.datetime.now()
        if entrydate > currentdate:
            raise forms.ValidationError("Merci de contrôler la date (postérieure à la date du jour)")
        return data

---

您在表单中将

pat

字段重新定义为

CharField

，因此您在模型上指定的验证都不适用。您可以将表单重写为

ModelForm

，也可以将正则表达式和唯一性验证添加到表单中

class RandomizationEditForm(forms.Form):

    def __init__(self, *args, **kwargs):
       super(RandomizationEditForm, self).__init__(*args, **kwargs)

       self.fields["pat"] = forms.CharField(label = "Numéro patient (XXX-0000)", validators=[RegexValidator(
            regex='^[A-Z]{3}-[0-9]{4}$',
            message= 'L\'identifiant doit être au format XXX-0000',
            code='invalid_participant_id'
        )])

    def clean_pat(self):
       data = self.cleaned_data['pat']
       if Randomisation.objects.filter(pat=data).exists():
           raise forms.ValidationError("L\'identifiant doit être unique")
       return data

---

我很笨。。。我没有看到我没有使用ModelForm。。。谢谢

class RandomizationEditForm(forms.Form):

    def __init__(self, *args, **kwargs):
       super(RandomizationEditForm, self).__init__(*args, **kwargs)

       self.fields["pat"] = forms.CharField(label = "Numéro patient (XXX-0000)", validators=[RegexValidator(
            regex='^[A-Z]{3}-[0-9]{4}$',
            message= 'L\'identifiant doit être au format XXX-0000',
            code='invalid_participant_id'
        )])

    def clean_pat(self):
       data = self.cleaned_data['pat']
       if Randomisation.objects.filter(pat=data).exists():
           raise forms.ValidationError("L\'identifiant doit être unique")
       return data