class loyalty_reward(osv.osv):

_name = 'loyalty.reward'

_columns = {

'name': fields.char('Name', size=32, select=1, required=True, help='An internal identification for this loyalty reward'),

'loyalty_program_id': fields.many2one('loyalty.program', 'Loyalty Program', help='The Loyalty Program this reward belongs to'),

'minimum_points': fields.float('Minimum Points', help='The minimum amount of points the customer must have to qualify for this reward'),

'type': fields.selection((('gift','Gift'),('discount','Discount'),('resale','Resale')), 'Type', required=True, help='The type of the reward'),

'gift_product_id': fields.many2one('product.product','Gift Product', help='The product given as a reward'),

'point_cost': fields.float('Point Cost', help='The cost of the reward'),

'discount_product_id': fields.many2one('product.product','Discount Product', help='The product used to apply discounts'),

'discount': fields.float('Discount',help='The discount percentage'),

'point_product_id': fields.many2one('product.product', 'Point Product', help='The product that represents a point that is sold by the customer'),

}

def _check_gift_product(self, cr, uid, ids, context=None):

for reward in self.browse(cr, uid, ids, context=context):

if reward.type == 'gift':

return bool(reward.gift_product_id)

else:

return True

def _check_discount_product(self, cr, uid, ids, context=None):

for reward in self.browse(cr, uid, ids, context=context):

if reward.type == 'discount':

return bool(reward.discount_product_id)

else:

return True

def _check_point_product(self, cr, uid, ids, context=None):

for reward in self.browse(cr, uid, ids, context=context):

if reward.type == 'resale':

return bool(reward.point_product_id)

else:

return True

_constraints = [

(_check_gift_product, "The gift product field is mandatory for gift rewards", ["type","gift_product_id"]),

(_check_discount_product, "The discount product field is mandatory for discount rewards", ["type","discount_product_id"]),

(_check_point_product, "The point product field is mandatory for point resale rewards", ["type","discount_product_id"]),

]

<record model="ir.ui.view" id="view_pos_pos_form">

<field name="name">pos.order.inherit</field>

<field name="model">pos.order</field>

<field name="inherit_id" ref="point_of_sale.view_pos_pos_form"/>

<field name="arch" type="xml">

<xpath expr="//page[@name='extra']" position="inside">

<group name="loyalty" string="Loyalty Programs">

<field name="loyalty_points" />

<field name="coupon_nb" />

</group>

</xpath>

</field>

</record>