[tryton-dev] Problems using one2many and many2many fields

[Carlos Ibrahim Arias]

Hi! I'm having problems using a one2many field on another model different 
from the class it was created on. I tried to use a many2many field so that 
I can view the related fields but cant make it work

This is the first class... 

class Z_MedicalHistory(ModelSQL, ModelView):

    'Patient Medical History'
    __name__ = 'gnuhealth.z_medical_history'

    medical_history_date = fields.DateTime('Date and Time', required=True)

    healthprof = fields.Many2One(
        'gnuhealth.healthprofessional', 'Health Prof',
        select=True, required=True, help='Health Professional')

    patient = fields.Many2One(
        'gnuhealth.patient', 'Patient',
        select=True, required=True, help='Patient Name')

    comments = fields.Text('Comments', required=True)

    @staticmethod
    def default_medical_history_date():
        return datetime.now()

    @staticmethod
    def default_healthprof():
        pool = Pool()
        HealthProfessional = pool.get('gnuhealth.healthprofessional')
        return HealthProfessional.get_health_professional()


    @staticmethod
    def default_patient():
        pool = Pool()
        Patient = pool.get('gnuhealth.patient')
        return Patient.name


I added the following lines to the class PatientData (gnuhealth.patient) so 
that they are related

    z_medical_history = fields.One2Many(
        'gnuhealth.z_medical_history',
        'Z_MedicalHistory', 'Patient Medical History', help='Enter the 
Patient Medical History'
        ' for the patient.')



The problem is that there is another class call PatientEvaluation where I 
need to hace access and view Z_MedicalHistory using the patient field of 
PatientEvaluation. Tried the following but it's not working:

    z_medical_history = fields.Many2Many('gnuhealth.z_medical_history',
        'patient', None, 'Historial Medico del Paciente',
        domain=[('patient', '=', Eval('patient'))],
        depends=['patient'])

I guess I'm not doing it right. :(

Thanks it advanced!


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