Use update tag in record for cycling dependencies and remove constraint on

input/output/stock location because with those requirement it is impossible to
create a warehouse.

location.py

@@ -5,8 +5,8 @@ STATES = {
     'readonly': "not active",
 }
 STATES_WH = {
-    'readonly': "(not active) or type != 'warehouse'",
-    'required': "type == 'warehouse' and active",
+    'invisible': "type != 'warehouse'",
+    'readonly': "not active",
 }
 class Location(OSV):
     "Stock Location"
@@ -15,7 +15,8 @@ class Location(OSV):
     name = fields.Char("Name", size=64, required=True, states=STATES,)
     code = fields.Char("Code", size=32, states=STATES, select=True,)
     active = fields.Boolean('Active', select=True)
-    address = fields.Many2One("partner.address", "Address", states=STATES_WH,)
+    address = fields.Many2One("partner.address", "Address",
+            states=STATES_WH)
     type = fields.Selection([('supplier', 'Supplier'),
                               ('customer', 'Customer'),
                               ('inventory', 'Inventory'),

location.xml

@@ -21,10 +21,13 @@
                         <newline/>
                         <label name="address"/>
                         <field name="address"/>
+                        <newline/>
                         <label name="input_location"/>
                         <field name="input_location"/>
+                        <newline/>
                         <label name="output_location"/>
                         <field name="output_location"/>
+                        <newline/>
                         <label name="storage_location"/>
                         <field name="storage_location"/>
                     </form>
@@ -132,22 +135,28 @@
 
 
         <!-- Default locations -->
+        <record model="stock.location" id="location_warehouse">
+            <field name="name">Warehouse</field>
+        </record>
         <record model="stock.location" id="location_input">
             <field name="name">Input Zone</field>
             <field name="code">IN</field>
             <field name="type">storage</field>
+            <field name="parent" ref="location_warehouse"/>
         </record>
         <record model="stock.location" id="location_output">
             <field name="name">Output Zone</field>
             <field name="code">OUT</field>
             <field name="type">storage</field>
+            <field name="parent" ref="location_warehouse"/>
         </record>
         <record model="stock.location" id="location_storage">
             <field name="name">Storage Zone</field>
             <field name="code">STO</field>
             <field name="type">storage</field>
+            <field name="parent" ref="location_warehouse"/>
         </record>
-        <record model="stock.location" id="location_warehouse">
+        <record model="stock.location" id="location_warehouse" update="1">
             <field name="name">Warehouse</field>
             <field name="code">WH</field>
             <field name="type">warehouse</field>
@@ -155,10 +164,6 @@
             <field name="output_location" ref="location_output"/>
             <field name="storage_location" ref="location_storage"/>
         </record>
-<!--         <record model="stock.location" id="location_storage"> -->
-<!--             <field name="parent" ref="location_warehouse"/> -->
-<!--         </record> -->
-
 
     </data>
 </tryton>