Cal. Bus. & Prof. Code § 25657
It is unlawful:
(b) In any place of business where alcoholic beverages are sold to be consumed upon the premises, to employ or knowingly permit anyone to loiter in or about said premises for the purpose of begging or soliciting any patron or customer of, or visitor in, such premises to purchase any alcoholic beverages for the one begging or soliciting.
Every person who violates the provisions of this section is guilty of a misdemeanor.