add production

production.py

@@ -0,0 +1,63 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from decimal import Decimal
+
+from trytond.pool import Pool, PoolMeta
+from trytond.model import fields
+from trytond.modules.product import price_digits, round_price
+
+from trytond.exceptions import UserError
+
+
+BOM_CHANGES = ['bom', 'product', 'quantity', 'uom', 'warehouse', 'location',
+               'company', 'inputs', 'outputs']
+
+class Production(metaclass=PoolMeta):
+    "Production"
+    __name__ = 'production'
+
+
+    @fields.depends(*BOM_CHANGES)
+    def explode_bom(self):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        if not (self.bom and self.product and self.uom):
+            return
+
+        factor = self.bom.compute_factor(self.product, self.quantity or 0,
+            self.uom)
+
+        inputs = []
+        for input_ in self.bom.inputs:
+            if input_.product.producible:
+                for input_ in input_.product.template.boms.inputs:
+                    quantity = input_.compute_quantity(factor)
+                    move = self._explode_move_values(
+                        self.picking_location, self.location, self.company,
+                        input_, quantity)
+                    if move:
+                        inputs.append(move)
+                        quantity = Uom.compute_qty(input_.uom, quantity,
+                                                   input_.product.default_uom, round=False)
+            else:
+                raise UserError(str('problemas'))
+                quantity = input_.compute_quantity(factor)
+                move = self._explode_move_values(
+                    self.picking_location, self.location, self.company,
+                    input_, quantity)
+                if move:
+                    inputs.append(move)
+                    quantity = Uom.compute_qty(input_.uom, quantity,
+                        input_.product.default_uom, round=False)
+        self.inputs = inputs
+
+        outputs = []
+        for output in self.bom.outputs:
+            quantity = output.compute_quantity(factor)
+            move = self._explode_move_values(
+                self.location, self.output_location, self.company, output,
+                quantity)
+            if move:
+                move.unit_price = Decimal(0)
+                outputs.append(move)
+        self.outputs = outputs