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Variable quantity in contract recurrent invoicing
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With this module, you will be able to define in recurring contracts some
lines with variable quantity according to a provided formula.

**Table of contents**

.. contents::
   :local:

Configuration
=============

#. Go to Invoicing > Configuration > Contracts > Formulas (quantity).
#. Define any formula based on Python code that stores at some moment a
   float/integer value of the quantity to invoice in the variable 'result'.

   You can use these variables to compute your formula:

   * *env*: Environment variable for getting other models.
   * *context*: Current context dictionary.
   * *user*: Current user.
   * *line*: Contract recurring invoice line that triggers this formula.
   * *contract*: Contract whose line belongs to.
   * *invoice*: Invoice (header) being created.

.. figure:: https://raw.githubusercontent.com/OCA/contract/12.0/contract_variable_quantity/images/formula_form.png
   :alt: Formula form
   :width: 600 px

Usage
=====

To use this module, you need to:

#. Go to Invoicing > Sales > Contracts and select or create a new contract.
#. Check *Generate recurring invoices automatically*.
#. Add a new recurring invoicing line.
#. Select "Variable quantity" in column "Qty. type".
#. Select one of the possible formulas to use (previously created).

Bug Tracker
===========

Bugs are tracked on `GitHub Issues <https://github.com/OCA/contract/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 <https://github.com/OCA/contract/issues/new?body=module:%20contract_variable_quantity%0Aversion:%2012.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.

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

Credits
=======

Authors
~~~~~~~

* Tecnativa

Contributors
~~~~~~~~~~~~

* Pedro M. Baeza <pedro.baeza@tecnativa.com>
* Dave Lasley <dave@laslabs.com>
* Souheil Bejaoui <souheil.bejaoui@acsone.eu>

Maintainers
~~~~~~~~~~~

This module is maintained by the OCA.

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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/contract <https://github.com/OCA/contract/tree/12.0/contract_variable_quantity>`_ project on GitHub.

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