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tryton/modules/account_product/doc/design.rst
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******
Design
******
The *Account Product Module* mainly extends existing accounting and product
concepts.
.. _concept-product:
Product
=======
The *Product* concept is extended with a set of methods that allow access to
the product's accounting related properties.
Many of these properties are set in the product's accounting category.
The accounting category is a special type of
`Product Category <model-product.category>`.
Unlike standard product categories, each product can only have a single
accounting category.
.. seealso::
The `Product <product:concept-product>` concept is introduced by the
:doc:`Product Module <product:index>`.
.. _model-product.category:
Product Category
================
The *Account Product Module* allows some *Product Categories* to be marked as
accounting categories.
These product categories can have accounting properties such as
`Taxes <account:model-account.tax>`, and revenue and expense
`Accounts <account:model-account.account>` associated with them.
When placing categories into a structure all the categories in the structure
must be either standard categories or accounting categories.
This means an accounting category cannot have a standard category as its
parent or as any of its subcategories.
.. seealso::
The `Product Category <product:model-product.category>` concept is
introduced by the :doc:`Product Module <product:index>`.
.. _model-analytic_account.rule:
Analytic Account Rule
=====================
The *Account Product Module* extends the *Analytic Account Rules* allowing
`Products <concept-product>` and `Categories <model-product.category>` to be
used as criteria by the analytic rule engine.
.. note::
This feature is only available when the *Analytic Account Module* is
activated.
.. seealso::
The *Analytic Account Rule* concept is introduced by the :doc:`Analytic
Account Module <analytic_account:index>`.