Wie viele-zu-eins-Feld in Django-Formular zu integrieren

Question

Ich habe drei Modellklassen wie diese: InstallationReportPartInstance hat eine viele-zu-eins-Beziehung zu InstallationReportData.

class InstallationReportData(FormData): 
    installationDate = models.DateField(null=True, blank=False, verbose_name="Date of Installation") 
    deliveryOrder = models.CharField(null=True, blank=True, max_length=255, verbose_name="Delivery Order") 
    unitSerialNumber = models.CharField(null=True, blank=False, max_length=255, verbose_name="Unit S/N") 
    unitHours = models.DecimalField(null=True, blank=False, decimal_places=2, max_digits=5, verbose_name="Unit Hours") 
    visualInspection = models.BooleanField(default=False, verbose_name="Visual Inspection") 
... 

class InstallationReportPartDefinition(models.Model): 
    deviceType = models.CharField(max_length=3, choices=DeviceProfile.TYPE_DEVICE, default='E', verbose_name="Device Type") 
    productCode = models.CharField(max_length=32, blank=False, null=False, unique=True, verbose_name="Product Code") 
    itemDescription = models.CharField(max_length=1023, blank=False, null=False, verbose_name="Item Description") 
    quantity = models.CharField(max_length=255, blank=False, null=False, verbose_name="Quantity") 


class InstallationReportPartInstance(models.Model): 
    definition = models.ForeignKey(InstallationReportPartDefinition, on_delete=models.CASCADE, related_name="instances", verbose_name="Definitions") 
    installationReport = models.ForeignKey(InstallationReportData, on_delete=models.CASCADE, related_name="parts", verbose_name="Installation Report") 
    received = models.BooleanField(default=False, blank=True, verbose_name="Received") 
    installed = models.BooleanField(default=False, blank=True, verbose_name="Installed") 

Ich habe ein Formular für InstallationReportData, die wie folgt aussehen:

Other form fields... 

| Product Code | Description | Quantity | Received | Installed | 
| xxx1  | desc1  | 2 items | YES |  NO | 
| xxx2  | desc2  | 1 set | NO |  NO | 
| xxx3  | desc3  | 2 items | YES |  NO | 

Oder in real:

So, die Aussicht ist wie folgt:

class InstallationReportView(BaseCreationView): 
    model = InstallationReportData 
    form_class = InstallationReportDataForm 
    template_name = 'mism_web/forms/installation_report.html' 
    permission_denied_message = "You do not have permission to fill installation report data." 
    parts = None 

    # Create and set needed parts as instance variable. 
    def get_initial(self): 
     super(InstallationReportView, self).get_initial() 
     device_type = self.workflow.device.device_type 
     if device_type is not None: 
      self.parts = InstallationReportPartDefinition.objects.filter(deviceType=self.workflow.device.device_type) 

    # set context for parts 
    def get_context_data(self, **kwargs): 
     context = super(InstallationReportView, self).get_context_data(**kwargs) 
     context['parts'] = [InstallationReportPartInstance(definition=p, installationReport=None, received=False, installed=False) for p in self.parts] 
     return context 

Vorlagencode für Teile (innerhalb des Formulars) sieht wie aus dies:

Other form fields... 

    <table class="bordered"> 
     <thead> 
     <tr> 
      <th>Product Code</th> 
      <th>Item Description</th> 
      <th>Quantity</th> 
      <th>Received</th> 
      <th>Installed</th> 
     </tr> 
     </thead> 
     <tbody> 
     {% for part in parts %} 
     <tr> 
      <td>{{ part.definition.productCode }}</td> 
      <td>{{ part.definition.itemDescription }}</td> 
      <td>{{ part.definition.quantity }}</td> 
      <td> 
       <div> 
        <input id="id_part_received_{{ part.definition.pk }}" type="checkbox" /> 
        <label for="id_part_received_{{ part.definition.pk }}"></label> 
       </div> 
      </td> 
      <td> 
       <div> 
        <input id="id_part_installed_{{ part.definition.pk }}" type="checkbox" /> 
        <label for="id_part_installed_{{ part.definition.pk }}"></label> 
       </div> 
      </td> 
     </tr> 
     {% endfor %} 
     </tbody> 
    </table> 

Nun, ich weiß nicht, wie die teilweise Werte für die InstallationReportData Form in form_valid Verfahren einzustellen. Kannst du mir helfen zu verstehen, wie man das schafft? Ich bin seit einem Tag festgefahren und ich kann nicht wirklich herausfinden, wie das geht.

Answer 1

Der einfachste Weg ist, Felder nicht manuell so zu erstellen, sondern Djangos Formularfelder zu verwenden. Die relevante hier ist die ModelChoiceField