cooperative-market/beesdoo_product/models/beesdoo_product.py

 # -*- coding: utf-8 -*-
from openerp import models, fields, api

class BeesdooProduct(models.Model):
    _inherit = "product.template"

    eco_label = fields.Many2one('beesdoo.product.label', domain = [('type', '=', 'eco')])
    local_label = fields.Many2one('beesdoo.product.label', domain = [('type', '=', 'local')])
    fair_label = fields.Many2one('beesdoo.product.label', domain = [('type', '=', 'fair')])
    origin_label = fields.Many2one('beesdoo.product.label', domain = [('type', '=', 'delivery')])

class BeesdooProductLabel(models.Model):
    _name = "beesdoo.product.label"

    name = fields.Char()
    type = fields.Selection([('eco', 'Écologique'), ('local', 'Local'), ('fair', 'Équitable'), ('delivery', 'Distribution')])
    color_code = fields.Char()