How do I set favicon in Odoo / OpenERP?

How do I set a favicon for the web/e-commerce frontend of Odoo 8?

Ideally without changing Odoo core files, i.e. I do not simply want to overwrite addons/web/static/src/img/favicon.ico.

(This is Odoo 8, August 2014. It's likely that it will be easier to change the favicon in future versions.)

Solution

You have to override the web module with your own module. You can add a line like

'data': [ 'views/website_templates.xml' ]

in your __openerp__.py.

Put your favicon at static/src/img/favicon.ico and add a template to views/website_templates:

<template id="MYSITE_layout" inherit_id="website.layout" name="MYSITE layout" priority="17">
    <xpath expr="//head//link" position="after">
        <link rel="shortcut icon" href="/MYSITE_web/static/src/img/favicon.ico" type="image/x-icon"/>
    </xpath>
</template>