如何让用户输入以在 django/python 中搜索内容？

Question

I'm relatively new in python/django thing. Having 3 models with some fields for example:

class Card(models.Model):    
    id = models.AutoField(primary_key=True)    
    cardtype_id = models.CharField(max_length=10)   
    holder_name = models.CharField(max_length=100)   
    card_number = models.IntegerField(default=0)   
    email = models.EmailField(blank=True)   
    birthday = models.DateField(blank=True, default=None)  
    created = models.DateTimeField(default=timezone.now)  
    updated = models.DateTimeField(default=timezone.now)  
    strip = models.CharField(max_length=20, default="strip")

  def __str__(self):
        return self.holder_name

class Transaction(models.Model):
    id = models.AutoField(primary_key=True)  
    description = models.CharField(max_length=100)

class CardTransactions(models.Model):
    card = models.ForeignKey(Card, on_delete=models.CASCADE)   
    transaction = models.ForeignKey(Transaction, on_delete=models.CASCADE)   
    value = models.DecimalField(max_digits=7, decimal_places=2, blank=True)   
    value_date = models.DateTimeField(default=timezone.now)   
    created = models.DateTimeField(default=timezone.now)   
    description = models.CharField(max_length=200, blank=True)   
    table_value = models.DecimalField(max_digits=7, decimal_places=2, blank=True)   
    discount = models.DecimalField(max_digits=7, decimal_places=2, blank=True)   
    net_value = models.DecimalField(max_digits=7, decimal_places=2, blank=True)   
    doc_number = models.CharField(max_length=20, blank=True)

How can I ask the user to input, for example, the "card_number" and print out the "description" on a HTML page?

Answer 1

from django.forms import model_to_dict


def my_view(request):
    card_num = request.GET.get('cc')
    return HttpResponse(str(model_to_dict(Card.objects.filter(card_number=card_num).first()))

at least something like that

Answer 2

You will need to write views and templates to do this task.

• One view would be to render the html template where you will have a form to input the value.

• Clicking on the button will call another view with parameter card_number which will retrieve the description from the database associated with the card_number and return back to the template where the same can be shown with some div as per your design.

• Ajax can be used to call the view and fetch the response.

See below links for reference:

https://docs.djangoproject.com/en/2.0/intro/tutorial03/

https://docs.djangoproject.com/en/2.0/intro/tutorial04/