Category: Python Answers

Sometimes, we want to call a view from within another view with Python Django.

In this article, we’ll look at how to call a view from within another view with Python Django.

How to call a view from within another view with Python Django?

To call a view from within another view with Python Django, we can call the view function directly.

For instance, we write

def view1(request):
    # ...
    return HttpResponse("some html here")

def view2(request):
    response = view1(request)
    # ...
    return HttpResponse("some different html here")

to call view1 in view2.

And then we can get the response returned and do what we want with it before we return the response.

We can also return the response directly in view2`.

Conclusion

To call a view from within another view with Python Django, we can call the view function directly.

Sometimes, we want to add data into ManyToMany field with Python Django.

In this article, we’ll look at how to add data into ManyToMany field with Python Django.

How to add data into ManyToMany field with Python Django?

To add data into ManyToMany field with Python Django, we can use the add method.

For instance, we write

my_obj.categories.add(fragmentCategory.objects.get(id=1))

to add the category entry related to my_obj by calling add with

fragmentCategory.objects.get(id=1)

This will add the entry for the association table between my_obj and categories.

Conclusion

To add data into ManyToMany field with Python Django, we can use the add method.

Sometimes, we want to add a Python Django required field in model form.

In this article, we’ll look at how to add a Python Django required field in model form.

How to add a Python Django required field in model form?

To add a Python Django required field in model form, we set the required property of the field to True.

For instance, we write

class MyForm(CircuitForm):
    def __init__(self, *args, **kwargs):
        super(CircuitForm, self).__init__(*args, **kwargs)

        for key in self.fields:
            self.fields[key].required = True

to loop through the fields in the form with a for loop.

In the loop, we set the field to required with

self.fields[key].required = True

Now all fields are set to be required.

Conclusion

To add a Python Django required field in model form, we set the required property of the field to True.

Sometimes, we want to set Python Django DateField default options.

In this article, we’ll look at how to set Python Django DateField default options.

How to set Python Django DateField default options?

To set Python Django DateField default options, we can set the default argument.

For instance, we write

import datetime

#...

date = models.DateField(_("Date"), default=datetime.date.today)

to create the date field in our model class.

We wrap 'Date' with parentheses to set the default date at the time the class is first defined.

Then we set the default argument to datetime.date.today.

Since we wrapped 'Date' with parentheses, today would be the date at the time the class is first defined.

Conclusion

To set Python Django DateField default options, we can set the default argument.

Sometimes, we want to add list fields in a Python Django model.

In this article, we’ll look at how to add list fields in a Python Django model.

How to add list fields in a Python Django model?

To add list fields in a Python Django model, we can create a char field that stores the list data as a string.

For instance, we write

import json


class Foobar(models.Model):
    foo = models.CharField(max_length=200)

    def set_foo(self, x):
        self.foo = json.dumps(x)

    def get_foo(self):
        return json.loads(self.foo)

to create the Foobar model that has the foo char field.

We add the set_foo setter method to set the value of foo.

And we add the get_foo method to return the value of foo.

Conclusion

To add list fields in a Python Django model, we can create a char field that stores the list data as a string.