xeBuz/Flask-Validator

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""" Comparision Validators 
 
- ValidateLessThan
- ValidateLessThanOrEqual
- ValidateGreaterThan
- ValidateGreaterThanOrEqual
"""
 
import abc
from flask_validator import Validator
 
 
class BaseComparision(Validator):
    """ Base Comparision Class
    """
    value = None
 
    def __init__(self, field, value, throw_exception=False, message=None):
        self.value = value
 
        Validator.__init__(self, field, False, throw_exception, message)
 
    @abc.abstractmethod
    def check_value(self, value):
        """
        Validate the new value
 
        :param value:
        """
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class ValidateLessThan(BaseComparision):
 
    """ Validate Less Than X
 
    Check if the new value has a value less than x
 
    Args:
        field: SQLAlchemy column to validate
        value: Value to check
        throw_exception: (bool) Throw a ValidateError if the validation fails
 
    """
 
    def check_value(self, value):
        return value < self.value
 
 
class ValidateLessThanOrEqual(BaseComparision):
    """ Validate Less Than X Or Equal
 
    Check if the new value has a value less than x or equal
 
    Args:
        field: SQLAlchemy column to validate
        value: Value to check
        throw_exception: (bool) Throw a ValidateError if the validation fails
 
    """
 
    def check_value(self, value):
        return value <= self.value
 
 
class ValidateGreaterThan(BaseComparision):
    """ Validate Greater Than X
 
    Check if the new value has a value greater than x
 
    Args:
        field: SQLAlchemy column to validate
        value: Value to check
        throw_exception: (bool) Throw a ValidateError if the validation fails
 
    """
 
    def check_value(self, value):
        return value > self.value
 
 
class ValidateGreaterThanOrEqual(BaseComparision):
    """ Validate Greater Than X Or Equal
 
    Check if the new value has a value greater than x
 
    Args:
        field: SQLAlchemy column to validate
        value: Value to check
        throw_exception: (bool) Throw a ValidateError if the validation fails
 
    """
 
    def check_value(self, value):
        return value >= self.value