Support None as search value of composite rec_name

modules/account_asset/asset.py

@@ -690,11 +690,18 @@ class Asset(Workflow, ModelSQL, ModelView):
 
     @classmethod
     def search_rec_name(cls, name, clause):
-        names = clause[2].split(' - ', 1)
-        res = [('number', clause[1], names[0])]
-        if len(names) != 1 and names[1]:
-            res.append(('product', clause[1], names[1]))
-        return res
+        domain = []
+        _, operator, value = clause
+        if value is not None:
+            names = value.split(' - ', 1)
+            domain.append(('number', operator, value))
+            if len(names) != 1 and names[1]:
+                domain.append(('product', operator, value))
+            if operator.startswith('!') or operator.startswith('not'):
+                domain.insert(0, 'OR')
+        elif not operator.startswith('!') and not operator.startswith('not'):
+            domain.append(('id', '<', 0))
+        return domain
 
     @classmethod
     def copy(cls, assets, default=None):

modules/purchase_request/purchase_request.py

@@ -200,14 +200,22 @@ class PurchaseRequest(ModelSQL, ModelView):
 
     @classmethod
     def search_rec_name(cls, name, clause):
-        res = []
-        names = clause[2].split('@', 1)
-        res.append(('product.template.name', clause[1], names[0]))
-        if len(names) != 1 and names[1]:
-            res.append(('warehouse', clause[1], names[1]))
-        return ['OR', res,
-            ('description',) + tuple(clause[1:]),
-            ]
+        _, operator, value = clause
+        if operator.startswith('!') or operator.startswith('not'):
+            bool_op = 'AND'
+        else:
+            bool_op = 'OR'
+        domain = [bool_op]
+        if value is not None:
+            names = value.split('@', 1)
+            sub_domain = [('product.template.name', operator, names[0])]
+            if len(names) != 1 and names[1]:
+                sub_domain.append(('warehouse', operator, names[1]))
+                if bool_op == 'AND':
+                    sub_domain.insert(0, 'OR')
+            domain.append(sub_domain)
+        domain.append(('description', *clause[1:]))
+        return domain
 
     @staticmethod
     def default_company():

modules/purchase_request_quotation/purchase.py

@@ -388,11 +388,18 @@ class QuotationLine(ModelSQL, ModelView):
 
     @classmethod
     def search_rec_name(cls, name, clause):
-        names = clause[2].split(' - ', 1)
-        res = [('quotation', clause[1], names[0])]
-        if len(names) != 1 and names[1]:
-            res.append(('supplier', clause[1], names[1]))
-        return res
+        domain = []
+        _, operator, value = clause
+        if value is not None:
+            names = clause[2].split(' - ', 1)
+            domain.append(('quotation', operator, names[0]))
+            if len(names) != 1 and names[1]:
+                domain.append(('supplier', operator, names[1]))
+            if operator.startswith('!') or operator.startswith('not'):
+                domain.insert(0, 'OR')
+        elif not operator.startswith('!') and not operator.startswith('not'):
+            domain.append(('id', '<', 0))
+        return domain
 
     @classmethod
     def delete(cls, quotationlines):