I am working on odoo version 12.
I would like to know how to create a pdf report such that it combines different fields from linked models with charts and graphs in it.
For example, assuming that there are three models, using the fields linking each other through primary and foreign keys, i would like to get these fields on a report while creating data graphs and charts for them.
https://www.odoo.com/forum/help-1/question/how-to-call-model-objects-at-xml-qweb-114691
https://www.odoo.com/forum/help-1/question/create-qweb-pdf-with-data-from-different-models-odoo-9-129358
https://learnopenerp.blogspot.com/2016/09/how-to-create-custom-reports-in-odoo.html
https://learnopenerp.blogspot.com/2016/11/how-to-create-qweb-reports-in-openerp.html