# 2D matrix for x2many fields

This module allows to show an x2many field with 3-tuples ($x_value, $y_value, $value) in a table

| $x_value1 | $x_value2
--- | --- | ---
$y_value1 | $value(1/1) | $value(2/1)
$y_value2 | $value(1/2) | $value(2/2)

where value(n/n) is editable.

An example use case would be: Select some projects and some employees so that a manager can easily fill in the planned_hours for one task per employee. The result could look like this:

The beauty of this is that you have an arbitrary amount of columns with this widget, trying to get this in standard x2many lists involves some quite ugly hacks.

Table of contents

- Usage
  - Example
- Known issues / Roadmap
- Changelog
  - 12.0.1.0.1 (2018-12-07)
  - 12.0.1.0.0 (2018-11-20)
- Bug Tracker
- Credits
  - Authors
  - Contributors
  - Maintainers

# Usage

Use this widget by saying:

    <field name="my_field" widget="x2many_2d_matrix" />

This assumes that my_field refers to a model with the fields x, y and value. If your fields are named differently, pass the correct names as attributes:

    <field name="my_field" widget="x2many_2d_matrix" field_x_axis="my_field1" field_y_axis="my_field2" field_value="my_field3">
        <tree>
            <field name="my_field"/>
            <field name="my_field1"/>
            <field name="my_field2"/>
            <field name="my_field3"/>
        </tree>
    </field>

You can pass the following parameters:

field_x_axis
  The field that indicates the x value of a point
field_y_axis
  The field that indicates the y value of a point
field_label_x_axis
  Use another field to display in the table header
field_label_y_axis
  Use another field to display in the table header
field_value
  Show this field as value
show_row_totals
  If field_value is a numeric field, it indicates if you want to calculate row totals. True by default
show_column_totals
  If field_value is a numeric field, it indicates if you want to calculate column totals. True by default

## Example

You need a data structure already filled with values. Let’s assume we want to use this widget in a wizard that lets the user fill in planned hours for one task per project per user. In this case, we can use `project.task` as our data model and point to it from our wizard. The crucial part is that we fill the field in the default function:

    from odoo import fields, models

    class MyWizard(models.TransientModel):
        _name = 'my.wizard'

        def _default_task_ids(self):
            # your list of project should come from the context, some selection
            # in a previous wizard or wherever else
            projects = self.env['project.project'].browse([1, 2, 3])
            # same with users
            users = self.env['res.users'].browse([1, 2, 3])
            return [
                (0, 0, {
                    'name': 'Sample task name',
                    'project_id': p.id,
                    'user_id': u.id,
                    'planned_hours': 0,
                    'message_needaction': False,
                    'date_deadline': fields.Date.today(),
                })
                # if the project doesn't have a task for the user,
                # create a new one
                if not p.task_ids.filtered(lambda x: x.user_id == u) else
                # otherwise, return the task
                (4, p.task_ids.filtered(lambda x: x.user_id == u)[0].id)
                for p in projects
                for u in users
            ]

        task_ids = fields.Many2many('project.task', default=_default_task_ids)

Now in our wizard, we can use:

    <field name="task_ids" widget="x2many_2d_matrix" field_x_axis="project_id" field_y_axis="user_id" field_value="planned_hours">
        <tree>
            <field name="task_ids"/>
            <field name="project_id"/>
            <field name="user_id"/>
            <field name="planned_hours"/>
        </tree>
    </field>

# Known issues / Roadmap

- Support extra attributes on each field cell via field_extra_attrs param. We could set a cell as not editable, required or readonly for instance. The readonly case will also give the ability to click on m2o to open related records.
- Support limit total records in the matrix. Ref: https://github.com/OCA/web/issues/901
- Support cell traversal through keyboard arrows.
- Entering the widget from behind by pressing `Shift+TAB` in your keyboard will enter into the 1st cell until https://github.com/odoo/odoo/pull/26490 is merged.
- Support extra invisible fields inside each cell.
- Support kanban mode. Current behaviour forces list mode.

# Changelog

## 12.0.1.0.1 (2018-12-07)

- [FIX] Cells are unable to render property. (#1126)

## 12.0.1.0.0 (2018-11-20)

- [12.0][MIG] web_widget_x2many_2d_matrix (#1101)

# Bug Tracker

Bugs are tracked on GitHub Issues. In case of trouble, please check there if your issue has already been reported. If you spotted it first, help us smashing it by providing a detailed and welcomed feedback.

Do not contact contributors directly about support or help with technical issues.

# Credits

## Authors

- Therp BV
- Tecnativa
- Camptocamp
- CorporateHub

## Contributors

- Holger Brunn <hbrunn@therp.nl>
- Pedro M. Baeza <pedro.baeza@tecnativa.com>
- Artem Kostyuk <a.kostyuk@mobilunity.com>
- Simone Orsi <simone.orsi@camptocamp.com>
- Timon Tschanz <timon.tschanz@camptocamp.com>
- Jairo Llopis <jairo.llopis@tecnativa.com>
- Dennis Sluijk <d.sluijk@onestein.nl>
- CorporateHub
  - Alexey Pelykh <alexey.pelykh@corphub.eu>
- Adrià Gil Sorribes <adria.gil@forgeflow.com>

## Maintainers

This module is maintained by the OCA.

OCA, or the Odoo Community Association, is a nonprofit organization whose mission is to support the collaborative development of Odoo features and promote its widespread use.

This module is part of the OCA/web project on GitHub.

You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.