In Odoo-8 there is list view for journal items, in that there are two selection field one for account journal and second is for account period.
What I want to do
I would like to remove default value from period and journal.
I would also like to filter period in which only open period will be loaded.
What I have done so far
I have tried to set default value for period and journal by just setting _defaults but then filter wasn't worked.
Check the file located in:
addons/account/static/src/xml/account_move_line_quickadd.xml
This file defines the view you are referring to.
The file:
addons/account/static/src/js/account_move_line_quickadd.js
is the js file that sets the default values. If you take a look at the js file you will see that at some point the default_get method of the account_move_line model is called.
What you can do is either modify the js (by extending the widget of course)
or you can go and override the default_get method of the account_move_line model and do your work there.
