HI Alejandro, 

You can check below apps which will export fields of data for any application into excel format 

https://apps.odoo.com/apps/modules/10.0/dev_export_excel/

Hope it Helps !

Thanks ,

Devintelle : Odoo Support Service Provider '

Mail: Devintelle@gmail.com

Not sure what it is you are looking for exactly, but it is possible to export to csv from any tree view. Make sure to click the checkbox at Settings/General Settings - > Import/Export.

In a tree view click checkboxes of the items you want to export (or click the box on top to select all) and select the fields of your choice. You can save the defined export to use any next time.

I know for a fact that Aeroo supports this on Odoo 7 and before. I don't know the current situation, nor have I tested it for Odoo 8.

Depending on the type of report, you could also take a look at the export-to-xls possibility as provided by the company zestybeans (google zb_web something).

I dont know if I am misunderstanding your question and answering the obvious, but yes, odoo 8 can build (export) cvs files by exporting on tree view. Just select/mark desired records and select 'export' on the 'more' button; the export tool will appear and allow to select fields to export on CVS format.

I hope this be useful.