Add sale_project_fixed_price_task_completed_invoicing

sale_project_fixed_price_task_completed_invoicing/__init__.py

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+# -*- coding: utf-8 -*-
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from . import models

sale_project_fixed_price_task_completed_invoicing/__manifest__.py

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+# -*- coding: utf-8 -*-
+# Copyright 2017 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+{
+    "name": "Sale project fixed price task completed invoicing",
+    "version": "10.0.1.0.0",
+    "depends": [
+        'sale',
+        'product',
+        'project',
+    ],
+    "author": "Camptocamp,Odoo Community Association (OCA)",
+    "website": "http://www.camptocamp.com",
+    "license": "AGPL-3",
+    "category": "Sale",
+    "data": [
+        'views/project_views.xml',
+    ],
+    'installable': True,
+}

sale_project_fixed_price_task_completed_invoicing/models/__init__.py

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+# -*- coding: utf-8 -*-
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from . import product_template
+from . import project_task
+from . import sale_order_line

sale_project_fixed_price_task_completed_invoicing/models/product_template.py

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+# -*- coding: utf-8 -*-
+# Copyright 2017 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    track_service = fields.Selection(selection_add=[
+        ('completed_task', 'Completed Task')]
+    )

sale_project_fixed_price_task_completed_invoicing/models/project_task.py

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+# -*- coding: utf-8 -*-
+# Copyright 2017 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError
+
+
+class ProjectTask(models.Model):
+    _inherit = 'project.task'
+
+    invoiceable = fields.Boolean(
+        string='Invoiceable',
+    )
+    fixed_price = fields.Boolean(
+        string='Fixed Price',
+    )
+
+    @api.multi
+    def toggle_invoiceable(self):
+        for task in self:
+            # We dont' want to modify when the related SOLine is invoiced
+            if not task.sale_line_id or task.sale_line_id.state in ('done'):
+                continue
+            task.invoiceable = not task.invoiceable
+
+    @api.multi
+    def write(self, vals):
+        for task in self:
+            if (vals.get('sale_line_id') and
+               task.sale_line_id.state in ('done')):
+                raise ValidationError(_('You cannot modify the Sale Order '
+                                        'Line of the task once it is invoiced')
+                                      )
+
+    def create(self, vals):
+        SOLine = self.env['sale.order.line']
+
+        so_line = SOLine.browse(vals.get('sale_line_id'))
+        if so_line.state in ('done'):
+            raise ValidationError(_('You cannot add a task to and invoiced '
+                                    'Sale Order Line'))
+        return super(ProjectTask, self).create(vals)

sale_project_fixed_price_task_completed_invoicing/models/sale_order_line.py

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+# -*- coding: utf-8 -*-
+# Copyright 2017 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, models
+from odoo.exceptions import ValidationError
+
+
+class SaleOrderLine(models.Model):
+    _inherit = 'sale.order.line'
+
+    @api.constrains('product_id')
+    def _onchange_product_id(self):
+        for line in self:
+            if ('track_service' == line.product_id.track_service and
+               line.product_uom_qty != 1.0):
+                raise ValidationError('Error! You cannot have more than one '
+                                      '"track_service" sold in one Sale Order '
+                                      'Line')

sale_project_fixed_price_task_completed_invoicing/views/project_views.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+
+  <record id="edit_project_task_track" model="ir.ui.view">
+    <field name="name">project.task.form.track</field>
+    <field name="model">project.task</field>
+    <field name="inherit_id" ref="project.view_task_form2"/>
+    <field name="arch" type="xml">
+
+      <xpath expr="//field[@name='planned_hours']" position="after">
+        <field name='invoiceable'/>
+        <field name="fixed_price"/>
+      </xpath>
+
+      <div name="button_box" position="inside">
+        <button class="oe_stat_button" name="toggle_invoiceable" type="object" icon="fa-file" attrs="{'invisible': [('fixed_price', '=', False)]}">
+          <p>Invoiceable</p>
+        </button>
+      </div>
+
+    </field>
+  </record>
+
+</odoo>