I know that we can do changes in the GUI - Odoo page, but I talked with other consultants and they said to me that the better way to do changes is when you do in source code. In odoo v8, I was doing that with some techniques, but now this doesn't work.
Which directories should be changed and in which file can I save changes? Anyone can help me?
In Odoo v8, I did changes on the GUI but when we restarted the service of Odoo all the changes disappeared. For that reason I was trying to do the changes in source code of Odoo v9, because I don't want to lose all the new fields that I'm going to create.
Do you know which is the file or script in that I can make changes for to only restart one part of Odoo? Or which file can I put the sentence UPGRADE to make changes more consisten?