I'm using show_if to conditionally show fields on my form.  What a great 
feature!

Now however I've run into an instance where I have a field that I want 
displayed if either of two other fields is checked.

I know I can do show_if like this:

db.tablename.conditional_field.show_if = (db.tablename.checkbox_field_1 == 
True)


What I want to do is something like this (this code fails)

db.tablename.conditional_field.show_if = ((db.tablename.checkbox_field_1 == 
True) & (db.tablename.checkbox_field_2 == True))

Is there a way to string query expressions together with show_if?

-Jim

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