I am trying to make a field in my form view visible only in read mode. I'm using the following code:

models.py

test_field = fields.Char(string="Test Field")

view.xml

<field name="test_field" class="oe_read_only"/>

However, the field still shows in edit mode. I only want it to appear in read mode. What am I doing wrong?

Reference: https://stackoverflow.com/a/38238138