Add sequence for cost plan numbering.

__init__.py

@@ -3,6 +3,7 @@
 
 from trytond.pool import Pool
 from .plan import *
+from .configuration import *
 
 def register():
     Pool.register(
@@ -11,4 +12,5 @@ def register():
         PlanProductLine,
         PlanCostType,
         PlanCost,
+        Configuration,
         module='product_cost_plan', type_='model')

configuration.py

@@ -0,0 +1,19 @@
+#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 trytond.model import fields
+from trytond.pyson import Eval
+from trytond.pool import PoolMeta
+
+__all__ = ['Configuration']
+__metaclass__ = PoolMeta
+
+
+class Configuration:
+    __name__ = 'production.configuration'
+
+    product_cost_plan_sequence = fields.Property(fields.Many2One('ir.sequence',
+            'Product Cost Plan Sequence', domain=[
+                ('company', 'in',
+                    [Eval('context', {}).get('company', -1), None]),
+                ('code', '=', 'product_cost_plan'),
+                ], required=True))

configuration.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data>
+        <record model="ir.ui.view" id="production_configuration_view_form">
+            <field name="model">production.configuration</field>
+            <field name="type">form</field>
+            <field name="name">configuration_form</field>
+            <field name="inherit" ref="production.production_configuration_view_form"/>
+        </record>
+
+        <record model="ir.property" id="property_product_cost_plan_sequence">
+            <field name="field"
+                search="[('model.model', '=', 'production.configuration'), ('name', '=', 'product_cost_plan_sequence')]"/>
+            <field name="value" eval="'ir.sequence,' + str(ref('sequence_product_cost_plan'))"/>
+        </record>
+    </data>
+</tryton>

plan.py

@@ -17,7 +17,7 @@ class Plan(Workflow, ModelSQL, ModelView):
     'Product Cost Plan'
     __name__ = 'product.cost.plan'
 
-    number = fields.Char('Number')
+    number = fields.Char('Number', select=True, readonly=True)
     active = fields.Boolean('Active')
     product = fields.Many2One('product.product', 'Product',
         states={
@@ -149,6 +149,18 @@ class Plan(Workflow, ModelSQL, ModelView):
     def on_change_with_cost_price(self, name=None):
 	return sum(c.cost for c in self.costs if c.cost)
 
+    @classmethod
+    def create(cls, vlist):
+        Sequence = Pool().get('ir.sequence')
+        Config = Pool().get('production.configuration')
+
+        vlist = [x.copy() for x in vlist]
+        config = Config(1)
+        for values in vlist:
+            values['number'] = Sequence.get_id(
+                config.product_cost_plan_sequence.id)
+        return super(Plan, cls).create(vlist)
+
     @classmethod
     @ModelView.button
     @Workflow.transition('draft')
@@ -195,7 +207,7 @@ class Plan(Workflow, ModelSQL, ModelView):
             CostLines.create(costs_to_create)
 
     def get_costs(self):
-        " Returns the cost lines to be created on compute "
+        "Returns the cost lines to be created on compute"
         ret = []
         for cost_type, field_name in self.get_cost_types():
             ret.append(self.get_cost_line(cost_type, field_name))

plan.xml

@@ -24,6 +24,27 @@
             <field name="user" ref="res.user_trigger"/>
             <field name="group" ref="group_product_cost_plan"/>
         </record>
+
+        <record model="ir.sequence.type" id="sequence_type_product_cost_plan">
+            <field name="name">Product Cost Plan</field>
+            <field name="code">product_cost_plan</field>
+        </record>
+        <record model="ir.sequence.type-res.group"
+            id="sequence_type_product_cost_plan_group_admin">
+            <field name="sequence_type" ref="sequence_type_product_cost_plan"/>
+            <field name="group" ref="res.group_admin"/>
+        </record>
+        <record model="ir.sequence.type-res.group"
+            id="sequence_type_product_cost_plan_group_production_admin">
+            <field name="sequence_type" ref="sequence_type_product_cost_plan"/>
+            <field name="group" ref="group_product_cost_plan_admin"/>
+        </record>
+
+        <record model="ir.sequence" id="sequence_product_cost_plan">
+            <field name="name">Product Cost Plan</field>
+            <field name="code">product_cost_plan</field>
+        </record>
+
         <record model="ir.ui.view" id="product_cost_plan_view_form">
             <field name="model">product.cost.plan</field>
             <field name="type">form</field>

tryton.cfg

@@ -4,3 +4,4 @@ depends:
     production
 xml:
     plan.xml
+    configuration.xml

view/configuration_form.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="/form/field[@name='production_sequence']" position="after">
+        <label name="product_cost_plan_sequence"/>
+        <field name="product_cost_plan_sequence"/>
+    </xpath>
+</data>

view/cost_plan_form.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!-- The COPYRIGHT file at the top level of this repository contains the full
      copyright notices and license terms. -->
-<form string="Product Cost Plan" col="6">
+<form string="Product Cost Plan" col="6" cursor="product">
     <label name="number"/>
     <field name="number"/>
     <label name="active"/>