Relational data join table naming question

Hi, new to relational data mapping.

for many_to_many join table:

with one model called ‘block’ and one model called ‘block_menu’ how
should i name the join table?

I presume that ‘block’ will come before ‘block_menu’ alphabetically,

but I’m not sure that a join table will work in rails with three
underscores. eg


any thoughts?


er… two underscores…