Search context lot when farm is none in the context

#163387

events/insemination_event.py

@@ -37,7 +37,7 @@ class InseminationEvent(AbstractEvent, ImportedEventMixin):
             ], states=_STATES_WRITE_DRAFT,
         depends=_DEPENDS_WRITE_DRAFT + ['dose_product'],
         search_context={
-            'locations': [Eval('farm')],
+            'locations': If(Bool(Eval('farm')), [Eval('farm')], []),
             'stock_date_end': date.today(),
             })
     female_cycle = fields.Many2One('farm.animal.female_cycle', 'Female Cycle',

events/semen_extraction_event.py

@@ -4,7 +4,7 @@ import math
 from datetime import datetime, date, timedelta
 from decimal import Decimal
 from trytond.model import fields, ModelView, ModelSQL, Workflow, Check, Unique
-from trytond.pyson import Bool, Equal, Eval, Id
+from trytond.pyson import Bool, Equal, Eval, Id, If
 from trytond.pool import Pool
 from trytond.transaction import Transaction
 from trytond.exceptions import UserError
@@ -85,7 +85,7 @@ class SemenExtractionEvent(AbstractEvent):
             ], states=_STATES_VALIDATED,
         depends=_DEPENDS_VALIDATED + ['semen_product'],
         search_context={
-            'locations': [Eval('farm')],
+            'locations': If(Bool(Eval('farm')), [Eval('farm')], []),
             'stock_date_end': date.today(),
             })
     semen_move = fields.Many2One('stock.move', 'Semen Move', readonly=True,