[ADD] l10n_it_ddt new field boolean

 it's necessary to check if a picking in 'picking_ids' is 'done'. if so, the button 'put in pack'(in the header) will be invisible

l10n_it_ddt/i18n/it.po

@@ -388,6 +388,12 @@ msgstr "Fatture da DDT"
 msgid "To be invoiced"
 msgstr "Da fatturare"
 
+#. module: l10n_it_ddt
+#: code:addons/l10n_it_ddt/models/stock_picking_package_preparation.py:148
+#, python-format
+msgid "Impossible to put in pack a picking whose state is 'done'"
+msgstr "Impossibile mettere nel pacco un ordine di consegna con lo stato 'fatto'"
+
 #. module: l10n_it_ddt
 #: model:ir.model.fields,field_description:l10n_it_ddt.field_add_pickings_to_ddt___last_update
 #: model:ir.model.fields,field_description:l10n_it_ddt.field_ddt_create_invoice___last_update

l10n_it_ddt/models/stock_picking_package_preparation.py

@@ -108,6 +108,17 @@ def _default_ddt_type(self):
         string="Force Weight",
         help="Fill this field with the value you want to be used as weight. "
              "Leave empty to let the system to compute it")
+    check_if_picking_done = fields.Boolean(compute = '_compute_check_if_picking_done',)
+
+    @api.multi
+    @api.depends('picking_ids',
+                 'picking_ids.state')
+    def _compute_check_if_picking_done(self):
+        for record in self:
+            record.check_if_picking_done = False
+            for package in record.picking_ids:
+                if package.state == 'done':
+                    record.check_if_picking_done = True
 
     @api.onchange('partner_id', 'ddt_type_id')
     def on_change_partner(self):
@@ -139,6 +150,11 @@ def check_linked_picking(self, picking):
 
     @api.multi
     def action_put_in_pack(self):
+         # ----- Check if exist a stock picking whose state is 'done'
+        for record_picking in self.picking_ids:
+             if record_picking.state == 'done':
+                 raise UserError(
+                    _("Impossible to put in pack a picking whose state is 'done'"))
         for package in self:
             # ----- Check if package has details
             if not package.line_ids:

l10n_it_ddt/views/stock_picking_package_preparation.xml

@@ -134,6 +134,10 @@
                 <xpath expr="//field[@name='company_id']" position="after">
                    <field name="to_be_invoiced"/>
                    <field name="invoice_id"/>
+                   <field name="check_if_picking_done" invisible="True"></field>
+                </xpath>
+                <xpath expr="//form/header/button[@name='action_put_in_pack']" position="attributes">
+                    <attribute name="attrs">{'invisible' : ['|',('check_if_picking_done','=',True)]}</attribute>
                 </xpath>
             </field>
      </record>