python - pop up dialog box instead raising form errors django -


this pop dialog box want have

this pop dialog box want have this error message wish replaced pop dialog box

this error message wish replaced pop dialog box

right code showing error message example "studentid: ensure value has @ least 8 characters" in page before field when studentid has less or more 8 characters, start , end date have no difference of 14 days, , when studentid , startdate not unique. able pop dialog box when student id, student name , checkbox not filled. how pop dialog box being shown when start , end date field empty, start , end date has no difference of 14 days, studentid , startdate not unique, studentid has less/more 8 characters ?

views.py

def timesheet(request):     if request.method == "post":         form = timesheetform(request.post)         if form.is_valid():             timesheet = form.save(commit=false)             timesheet.save()     else:         form = timesheetform()     return render(request, 'hrfinance/timesheet.html', {'form': form})  class timesheetform(forms.modelform):     checkbox = forms.booleanfield()     studentname = forms.charfield()     startdate = forms.datefield()     enddate = forms.datefield()      class meta:         model = timesheet         fields = '__all__'       def clean(self):         cleaned_data = super(timesheetform, self).clean()         startdate = cleaned_data.get("startdate")         enddate = cleaned_data.get("enddate")          if startdate , enddate:             if enddate < startdate:                 raise forms.validationerror("end date cannot earlier start date!")              dt = enddate - startdate             if not dt.days == 14:                 raise forms.validationerror("duration must 2 weeks!")         return cleaned_data

models.py 

class timesheet(models.model):     studentid = models.charfield("student id", max_length=8, validators=[minlengthvalidator(8)], default="", unique_for_date="startdate")     studentname = models.charfield("student name", max_length=500, default="")     startdate = models.datefield("startdate", blank=true)     enddate = models.datefield("enddate", blank=true)       def __str__(self):         return self.studentid


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