Python django.db.connection.data_type_check_constraints() Examples

The following are 6 code examples of django.db.connection.data_type_check_constraints(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module django.db.connection , or try the search function .
Example #1
Source File: __init__.py    From GTDWeb with GNU General Public License v2.0 6 votes vote down vote up 
def db_parameters(self, connection):
        """
        Extension of db_type(), providing a range of different return
        values (type, checks).
        This will look at db_type(), allowing custom model fields to override it.
        """
        data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
        type_string = self.db_type(connection)
        try:
            check_string = connection.data_type_check_constraints[self.get_internal_type()] % data
        except KeyError:
            check_string = None
        return {
            "type": type_string,
            "check": check_string,
        }
Example #2
Source File: __init__.py    From openhgsenti with Apache License 2.0 6 votes vote down vote up 
def db_parameters(self, connection):
        """
        Extension of db_type(), providing a range of different return
        values (type, checks).
        This will look at db_type(), allowing custom model fields to override it.
        """
        data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
        type_string = self.db_type(connection)
        try:
            check_string = connection.data_type_check_constraints[self.get_internal_type()] % data
        except KeyError:
            check_string = None
        return {
            "type": type_string,
            "check": check_string,
        }
Example #3
Source File: __init__.py    From bioforum with MIT License 5 votes vote down vote up 
def db_check(self, connection):
        """
        Return the database column check constraint for this field, for the
        provided connection. Works the same way as db_type() for the case that
        get_internal_type() does not map to a preexisting model field.
        """
        data = self.db_type_parameters(connection)
        try:
            return connection.data_type_check_constraints[self.get_internal_type()] % data
        except KeyError:
            return None
Example #4
Source File: __init__.py    From Hands-On-Application-Development-with-PyCharm with MIT License 5 votes vote down vote up 
def db_check(self, connection):
        """
        Return the database column check constraint for this field, for the
        provided connection. Works the same way as db_type() for the case that
        get_internal_type() does not map to a preexisting model field.
        """
        data = self.db_type_parameters(connection)
        try:
            return connection.data_type_check_constraints[self.get_internal_type()] % data
        except KeyError:
            return None
Example #5
Source File: __init__.py    From python with Apache License 2.0 5 votes vote down vote up 
def db_check(self, connection):
        """
        Return the database column check constraint for this field, for the
        provided connection. Works the same way as db_type() for the case that
        get_internal_type() does not map to a preexisting model field.
        """
        data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
        try:
            return connection.data_type_check_constraints[self.get_internal_type()] % data
        except KeyError:
            return None
Example #6
Source File: __init__.py    From python2017 with MIT License 5 votes vote down vote up 
def db_check(self, connection):
        """
        Return the database column check constraint for this field, for the
        provided connection. Works the same way as db_type() for the case that
        get_internal_type() does not map to a preexisting model field.
        """
        data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
        try:
            return connection.data_type_check_constraints[self.get_internal_type()] % data
        except KeyError:
            return None