Automatically Foreign Key in Form. How??

Using Django Forms & APIs
1

Is it possible to fetch foreign key items automatically from JobDetailView to ApplyView. Like When someone seeing JobDetailsView then click on Apply Button and redirected to ApplyView and the Designation Input was automatically filled based on what Job he was looking on previous page.

Models

# Jobs Model
class Job(models.Model):
    jobid = models.SlugField(unique=True, editable=False, verbose_name="JobID")
    title = models.CharField(max_length=250, verbose_name="Job Title")
    country = models.CharField(max_length=250, verbose_name="Country")
    description = fields.RichTextField(max_length=10000, verbose_name="Job Description")
    keywords = models.CharField(max_length=500, blank=True, verbose_name="Keywords", default="Jobs, ")
    posted = models.DateTimeField(auto_now_add=True, editable=False)

    def save(self):
        if not self.jobid:
            self.jobid = 'JB' + customId()
        super(Job, self).save()

    def __str__(self):
        return f'{self.title} ({self.jobid})'
    
    class Meta:
        verbose_name = "Vacancy"
        verbose_name_plural = "Vacancies"
        ordering = ('-posted',)


# Candidates Model
class Candidate(models.Model):
    candidateid = models.SlugField(unique=True, editable=False, verbose_name="Candidate ID")
    full_name = models.CharField(max_length=250, verbose_name="Full Name")
    designation = models.ForeignKey(Job, on_delete=models.CASCADE, verbose_name="Designation")
    total_experience = models.PositiveIntegerField(verbose_name="Total Experience")
    email = models.EmailField(blank=True, verbose_name="Email")
    mobile = models.CharField(max_length=250, verbose_name="Mobile No.")
    location = models.CharField(max_length=250, verbose_name="Current Location")
    summary = fields.RichTextField(max_length=1500, blank=True, verbose_name="Summary")
    resume = files.RestrictedFileField(upload_to=files.renamecv, validators=[files.filesize], verbose_name="Upload Resume")
    applied = models.DateTimeField(auto_now_add=True, editable=False)
    keywords = models.CharField(max_length=500, blank=True, verbose_name="Keywords")

    def save(self):
        if not self.candidateid:
            self.candidateid = 'CA' + customId()
        super(Candidate, self).save()

    def __str__(self):
        return f'{self.full_name}, {self.designation}'
    
    class Meta:
        verbose_name = "Candidate"
        verbose_name_plural = "Candidates"
        ordering = ('-applied',)

Forms

from captcha import fields

class JobForm(ModelForm):
   
    class Meta:
        model = models.Job
        fields = '__all__'
        exclude = ['keywords',]

class CandidateForm(ModelForm):
    captcha = fields.CaptchaField()
   
    class Meta:
        model = models.Candidate
        fields = '__all__'
        exclude = ['keywords',]

Views

# Job Views
class JobCreateView(mixins.LoginRequiredMixin, generic.edit.CreateView):
    form_class = forms.JobForm
    template_name = 'dash/jobForm.html'
    slug_field = 'jobid'
    slug_url_kwarg = 'jobid'

    def form_valid(self, form):
        item = form.save()
        self.jobid = item.jobid
        return super(JobCreateView, self).form_valid(form)

    def get_success_url(self):
        return reverse('jobdetail', kwargs={'jobid': self.jobid})

class JobDetailView(mixins.LoginRequiredMixin, generic.DetailView):
    model = models.Job
    context_object_name = 'job'
    template_name = 'dash/jobDetail.html'
    slug_field = 'jobid'
    slug_url_kwarg = 'jobid'


# Apply Views
class ApplyView(generic.edit.CreateView):
    form_class = forms.CandidateForm
    template_name = 'pages/apply.html'
    slug_field = 'candidateid'
    slug_url_kwarg = 'candidateid'

    def form_valid(self, form):
        item = form.save()
        self.candidateid = item.candidateid
        return super(ApplyView, self).form_valid(form)

    def get_success_url(self):
        return reverse('applysuccess', kwargs={'candidateid': self.candidateid})

My URLs are like this FYI

path('viewjobs/<slug:jobid>', views.JobDetailView.as_view(), name="jobdetail"),
2

Pass the jobid to ApplyView as a url parameter. Use that in the ApplyView to retrieve the Job from the database and initialize the form with it.

3

Hello Sorry for late reply. I did as you said but it’s not working. Can you guide me. I am messing up in views I guess.

Views

# Apply Views
class ApplyView(generic.edit.CreateView):
    form_class = forms.CandidateForm
    template_name = 'pages/Apply.html'
    slug_field = 'candidateid'
    slug_url_kwarg = 'candidateid'

    def get_initial(self, *args, **kwargs):
        initial = super(ApplyView, self).get_initial(**kwargs)
        initial['designation'] = self.kwargs['designation_id']  
        return initial

    def form_valid(self, form):
        form.instance.designation_jobid = self.kwargs['jobid']
        item = form.save()
        self.candidateid = item.candidateid
        return super(ApplyView, self).form_valid(form)

    def get_success_url(self):
        return reverse('applysuccess', kwargs={'candidateid': self.candidateid})

Urls

    path('viewjobs/<slug:jobid>/apply', views.ApplyView.as_view(), name="apply"),
4

No worries solved. Thanks for guiding. :slight_smile:

    def form_valid(self, form):
        designation = models.Job.objects.get(jobid=self.kwargs['jobid'])
        form.instance.designation = designation
        item = form.save()
        self.candidateid = item.candidateid
        return super(ApplyView, self).form_valid(form)