Negative value will rise validation error-CodePudding

I want to implement custom validation for negative value , can any one help me for this.

So in the object we do not allow user to add negative value.

CodePudding user response：

Try using the class PositiveIntegerField.

So in your models.py something like

value = models.PositiveIntegerField(default=0)

CodePudding user response：

is this what you want:

def check(n):
    if n >= 0:
        # the value is positive
        print("the value is positive")
    else:
        # the value is negative
        print("the value is negative")

check(10) # i get: the value is positive
check(-10)# i get: the value is negative