@http.route(['/offline_miners'], type='http', auth='public', methods=['GET'], website=True)
    def offline_report(self, **kw):
        devices_offline = request.env['cmc.device'].sudo().search([('current_ip_address_id', '=', False), ('state', '=', 'active')])
        now = datetime.datetime.now()

        ret = '<h3>List of offline miners </br> <h4>Date: %s</h4></h3>' % (now.strftime("%Y-%m-%d %H:%M"))

        devices = devices_offline.sorted(lambda d: (d.current_location_id.name or 'UNKOWN', d.name))

        beaudry = []
        beaudry.append('<h4>Beaudry</h4><br>')
        thomas = []
        thomas.append('<h4>St-Thomas</h4><br>')
        root = []
        root.append('<h4>Root</h4><br>')
        champlain = []
        champlain.append('<h4>Champlain</h4><br>')
        lanaudiere = []
        lanaudiere.append('<h4>Lanaudière</h4><br>')
        paul = []
        paul.append('<h4>St-Paul</h4><br>')
        raoul = []
        raoul.append('<h4>Raoul-Charette</h4><br>')
        unknown = []
        unknown.append('<h4>Unknown</h4><br>')

        for device in devices_offline:
            if device.current_location_id:
                if device.current_location_id.name[:4] == 'LOC1':
                    beaudry.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
                elif device.current_location_id.name[:4] == 'LOC2':
                    thomas.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
                elif device.current_location_id.name[:4] == 'LOC3':
                    root.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
                elif device.current_location_id.name[:4] == 'LOC4':
                    champlain.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
                elif device.current_location_id.name[:4] == 'LOC5':
                    lanaudiere.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
                elif device.current_location_id.name[:4] == 'LOC6':
                    paul.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
                elif device.current_location_id.name[:4] == 'LOC7':
                    raoul.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))
            else:
                unknown.append('<tr><td>%s</td> <td>%s</td> <td>%s</td> </tr>' % (device.name, device.current_location_id.name or ' ', device.owner_id.name or ' '))

        if not kw.get('id') is None:
            if len(beaudry) > 1 and ('1' in kw.get('id')):

                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(beaudry):
                    ret += beaudry[i]
                    i += 1

                ret += '</table><br>'

            if len(thomas) > 1 and ('2' in kw.get('id')):

                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(thomas):
                    ret += thomas[i]
                    i += 1

                ret += '</table>'

            if len(root) > 1 and ('3' in kw.get('id')):
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(root):
                    ret += root[i]
                    i += 1

                ret += '</table>'

            if len(champlain) > 1 and ('4' in kw.get('id')):
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(champlain):
                    ret += champlain[i]
                    i += 1

                ret += '</table>'

            if len(lanaudiere) > 1 and ('5' in kw.get('id')):
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(lanaudiere):
                    ret += lanaudiere[i]
                    i += 1

                ret += '</table>'

            if len(paul) > 1 and ('6' in kw.get('id')):
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(paul):
                    ret += paul[i]
                    i += 1

                ret += '</table>'

            if len(raoul) > 1 and ('7' in kw.get('id')):
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(raoul):
                    ret += raoul[i]
                    i += 1

                ret += '</table>'
        else:
            if len(beaudry) > 1:

                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(beaudry):
                    ret += beaudry[i]
                    i += 1

                ret += '</table><br>'

            if len(thomas) > 1:

                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(thomas) :
                    ret += thomas[i]
                    i += 1

                ret += '</table>'

            if len(root) > 1:
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(root):
                    ret += root[i]
                    i += 1

                ret += '</table>'

            if len(champlain) > 1:
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(champlain):
                    ret += champlain[i]
                    i += 1

                ret += '</table>'

            if len(lanaudiere) > 1:
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(lanaudiere):
                    ret += lanaudiere[i]
                    i += 1

                ret += '</table>'

            if len(paul) > 1:
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(paul):
                    ret += paul[i]
                    i += 1

                ret += '</table>'

            if len(raoul) > 1:
                i = 0
                ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
                while i < len(raoul):
                    ret += raoul[i]
                    i += 1

                ret += '</table>'

        if len(unknown) > 1:
            i = 0
            ret += '<table><th> Device </th><th> Location </th><th> Owner </th>'
            while i < len(unknown):
                ret += unknown[i]
                i += 1

            ret += '</table>'