Return Mark_safe String From __str__

I have a class that takes a complex data type and returns the string representation of it using the __str__ method. Then, I can use the object directly in a template. However, I

Solution 1:

You can't; the return value from __str__must be a str value.

Template languages that support the __html__ attribute however will automatically call that instead:

classStrTest:def__init__(self, num):
        self.num = num

    def__str__(self):
        return str(self.num)

    def__html__(self):
        return mark_safe(
            '<span style="color: red">Number is {0}</span>'.format(self.num))

Django supports this as of version 1.7, see ticket #7261.