How add new field on tree view (inherit on inherited) - xpath

Question

I'm trying to replace a field in a tree view. Help me please.
This is script on base odoo enteprice
<record model="ir.ui.view" id="view_task_form2_inherited">
<field name="name">project.task.form.inherited</field>
<field name="model">project.task</field>
<field name="inherit_id" ref="project.view_task_form2" />
<field name="arch" type="xml">
<field name="project_id" position="attributes">
<attribute name="on_change">onchange_project(project_id)</attribute>
</field>
<field name="tag_ids" position="after">
<field name="analytic_account_id" invisible="1"/>
<field name="progress" widget="progressbar"
groups="project.group_time_work_estimation_tasks"/>
</field>
<xpath expr="//notebook/page[#name='description_page']" position="after">
<page string="Timesheets" groups="project.group_tasks_work_on_tasks,project.group_time_work_estimation_tasks">
<field name="timesheet_ids" groups="project.group_tasks_work_on_tasks" context="{'default_account_id' : analytic_account_id, 'default_is_timesheet' : 1}">
<tree editable="top" string="Timesheet Activities">
<field name="date"/>
<field name="user_id" required="1"/>
<field name="name"/>
<field name="account_id"/>
<field name="unit_amount" string="Duration" sum="Total time" widget="float_time"/>
<field name="is_timesheet" invisible="1"/>
</tree>
</field>
<group>
<group class="oe_subtotal_footer oe_right" name="project_hours" groups="project.group_time_work_estimation_tasks">
<field name="effective_hours" widget="float_time" groups="project.group_time_work_estimation_tasks"/>
<field name="remaining_hours" widget="float_time" class="oe_subtotal_footer_separator" groups="project.group_time_work_estimation_tasks"/>
</group>
</group>
</page>
</xpath>
</field>
</record>
This is my custom script on _view.xml:
<record id="project_task_view_form" model="ir.ui.view">
<field name="name">project.task.view.form</field>
<field name="model">project.task</field>
<field name="inherit_id" ref="project.view_task_form2"/>
<field name="arch" type="xml">
<xpath expr="/notebook/page[#name='description_page']" position="replace">
<page string="Timesheets" groups="project.group_tasks_work_on_tasks,project.group_time_work_estimation_tasks">
<field name="timesheet_ids" groups="project.group_tasks_work_on_tasks" context="{'default_account_id' : analytic_account_id, 'default_is_timesheet' : 1}">
<tree editable="top" string="Timesheet Activities">
<field name="date"/>
<field name="user_id" required="1"/>
<field name="name"/>
<field name="unit_amount" string="Duration" sum="Total time" widget="float_time"/>
<field name="is_timesheet" invisible="1"/>
<field name="invoiceable_analytic_line"/>
</tree>
</field>
</page>
</xpath>
</field>
</record>
I want add new field "invoiceable_analytic_line" inside "timesheet_ids", but it doesn't work.
anybody help me?
Thanks.

Answer 1

View
The procedure is correct but just that there is an error with the expr attribute inside xpath.
Instead:
<xpath expr="/notebook/page[#name='description_page']" position="replace">,you have to write:
<xpath expr="//sheet/notebook/page[1]" position="replace"> when on odoo 10<xpath expr="/sheet/notebook/page[#string='Description']" position="replace">Because description_page doesn't existSo copy whole <page string="Description">..</page> tag from /project/project_view.xml and paste it inside your xpath tag by modify the string. After that insert your field where you want
Model
class Add_in_timesheet(models.Model)
_inherit = 'project.task
invoiceable_analytic_line = fields.Char(string=u"Invoiceable")