[Rails] Best way to set database connection collation in rails?

Hello, I want to change the connection collation that rails uses but I'm unsure of exactly what the best way to do this is.  Everything in MySQL - the server, database and all tables are set to utf8_unicode_ci collation, but the connection collation in rails still appears to be utf8_general_ci (the default?).  We are using the mysql2 adapter.

I've seen a couple of possible methods:

Set the collation to utf8_unicode_ci via an init-connect line in the database server's my.cnf 

Set the ActiveRecord ConnectionAdapter to use the desired collation.

Is there a best approach?

Alternately, how much does it matter if the connection collation doesn't match set in the database server?

Thanks,

~ Alex

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