Hey myriam

now i understand as you commented above that this is liked to contract as one2many field so now just paste this my below code in amount_python_compute field

 a=0
 for i in contract.line_ech_ids:
     a=a+i.montant
 result=a

note: please be in mind this object (hr.line.echeancier) should be liked to contract as one2many field then this above code will work fine

thanks
sandeep

you uninstall or remove the depends of thats module surely it will work.

I'm working on the payroll module and on my own module, this data file is the one of paryroll , i'm trying to add another category ... because I need a category with a calculation rule that retrieves the value of the amount "montant"of class.

This category belongs to that one of the deduction. I need it to compute the payslip.

<record id="hr_AVANCE" model="hr.salary.rule.category">
        <field name="name">Remboursement de Prêts</field>
        <field name="code">AVANCE</field>
    <field name="parent_id" ref="hr_payroll.DED"/>
</record>

<record id="hr_payroll.avance" model="hr.salary.rule">
        <field name="name">Remboursement des Prêts</field>
        <field name="code">AVANCE PRET</field>
        <field name="sequence">100000</field>
        <field name="category_id" ref="hr_AVANCE"/>
        <field name="condition_select">none</field>
        <field name="amount_select">code</field>
        <field name="amount_python_compute">result = hr.line.echeancier.montant</field>
        <field name="appears_on_payslip" eval="False"/>
        <field name="note">la valeur des avances et des prêts.</field>
    </record>

pyhton:

class hr_line_echeancier(osv.osv):
    _name = "hr.line.echeancier"
    _description = "Echeancier"
 _columns = {
        'line_id': fields.many2one('hr.avance.pret', "ligne d\'échéancier"),
        'date_ech': fields.date('Date d\'échéance',
                                states={'draft': [('readonly', False)], 'confirm': [('readonly', False)]}, select=True),
        'montant': fields.float('Montant'),

    }

Thank you so much ..

Hi,

In file data.xml all data are defined in a static way or relationships between class. so you can do :

<field name="amount_python_compute">your value amount</field>