asset: aktueller kurs-anzeige, online-update begonnen

asset.py

@@ -6,7 +6,9 @@
 from trytond.model import ModelView, ModelSQL, fields
 from trytond.transaction import Transaction
 from trytond.pool import Pool
-from trytond.pyson import Eval, Bool
+from trytond.pyson import Eval, Bool, And
+from decimal import Decimal
+from datetime import time
 
 
 class Asset(ModelSQL, ModelView):
@@ -32,6 +34,9 @@ class Asset(ModelSQL, ModelView):
         ], depends=['product_uom', 'product'])
     rates = fields.One2Many(string='Rates', field='asset',
         model_name='investment.rate')
+    rate = fields.Function(fields.Numeric(string='Current Rate',
+        readonly=True, digits=(16, Eval('currency_digits', 4)),
+        depends=['currency_digits']), 'on_change_with_rate')
 
     company_currency = fields.Function(fields.Many2One(readonly=True,
         string='Company Currency', states={'invisible': True},
@@ -56,6 +61,29 @@ class Asset(ModelSQL, ModelView):
         help='Stock market symbol'),
         'get_identifiers', searcher='search_identifier')
 
+    updtsource = fields.Many2One(string='Update Source',
+        help='Select a source for the course update.',
+        ondelete='SET NULL', model_name='investment.source')
+    updttime1 = fields.Time(string='Time 1',
+        states={
+            'readonly': ~Bool(Eval('updtsource')),
+        }, depends=['updtsource'])
+    updttime2 = fields.Time(string='Time 2',
+        states={
+            'readonly': ~And(
+                    Bool(Eval('updtsource')),
+                    Bool(Eval('updttime1')),
+                ),
+        }, depends=['updtsource', 'updttime1'])
+    updttime3 = fields.Time(string='Time 3',
+        states={
+            'readonly': ~And(
+                    Bool(Eval('updtsource')),
+                    Bool(Eval('updttime1')),
+                    Bool(Eval('updttime2')),
+                ),
+        }, depends=['updtsource', 'updttime1', 'updttime2'])
+
     @classmethod
     def default_currency(cls):
         """ currency of company
@@ -78,6 +106,49 @@ class Asset(ModelSQL, ModelView):
         """
         return 4
 
+    @fields.depends('updtsource', 'updttime1', 'updttime2', 'updttime3')
+    def on_change_updtsource(self):
+        """ clear time-fields
+        """
+        if self.updtsource is None:
+            self.updttime1 = None
+            self.updttime2 = None
+            self.updttime3 = None
+        else :
+            self.updttime1 = time(11, 30)
+
+    @fields.depends('updttime1', 'updttime2', 'updttime3')
+    def on_change_updttime1(self):
+        """ clear fiels
+        """
+        if self.updttime1 is None:
+            self.updttime2 = None
+            self.updttime3 = None
+
+    @fields.depends('updttime2', 'updttime3')
+    def on_change_updttime2(self):
+        """ clear fiels
+        """
+        if self.updttime2 is None:
+            self.updttime3 = None
+
+    @fields.depends('id', 'currency_digits')
+    def on_change_with_rate(self, name=None):
+        """ get current rate
+        """
+        pool = Pool()
+        Rate = pool.get('investment.rate')
+        IrDate = pool.get('ir.date')
+
+        if self.id:
+            rates = Rate.search([
+                    ('date', '<=', IrDate.today()),
+                    ('asset.id', '=', self.id),
+                ], order=[('date', 'DESC')], limit=1)
+            if len(rates) > 0:
+                exp = Decimal(Decimal(1) / 10 ** (self.currency_digits or 4))
+                return rates[0].rate.quantize(exp)
+
     @fields.depends('product', 'uom')
     def on_change_product(self):
         """ update unit by product
@@ -213,4 +284,45 @@ class Asset(ModelSQL, ModelView):
         """
         return [('product.rec_name',) + tuple(clause[1:])]
 
+    @classmethod
+    def cron_update(cls):
+        """ update asset-rates
+        """
+        pool = Pool()
+        Asset2 = pool.get('investment.asset')
+        IrDate = pool.get('ir.date')
+
+        assets = Asset2.search([
+                ('updtsource', '!=', None),
+                (),
+            ])
+        print('\n## assets:', assets)
+
+    @classmethod
+    def create(cls, vlist):
+        """ add debit/credit
+        """
+        vlist = [x.copy() for x in vlist]
+        for values in vlist:
+            if 'updtsource' in values.keys():
+                if values['updtsource'] is None:
+                    values['updttime1'] = None
+                    values['updttime2'] = None
+                    values['updttime3'] = None
+        return super(Asset, cls).create(vlist)
+
+    @classmethod
+    def write(cls, *args):
+        """ deny update if cashbook.line!='open',
+            add or update debit/credit
+        """
+        actions = iter(args)
+        for lines, values in zip(actions, actions):
+            if 'updtsource' in values.keys():
+                if values['updtsource'] is None:
+                    values['updttime1'] = None
+                    values['updttime2'] = None
+                    values['updttime3'] = None
+        super(Asset, cls).write(*args)
+
 # end Asset