def validate_frequency(self, key, freq):
freq = freq.strip()
freq_id = Frequency.get_id_by_name(freq, key) ## Assertion exists here
if (key == 'frequency'):
if (self.check_in_frequency and self.check_in_frequency_name):
assert Frequency.conforms(freq, self.check_in_frequency_name), "Check-in frequency must conform to frequency!"
self.frequency_name = freq
elif (key == 'check_in_frequency'):
if (self.frequency and self.frequency_name):
assert Frequency.conforms(self.frequency_name, freq), "Check-in frequency must conform to frequency!"
self.check_in_frequency_name = freq
return freq_id
