Per California law, Temporary Gun Violence Restraining Orders can be obtained when a concerned party may petition (request) the court for a temporary gun violence restraining order against a party (respondent) and this concerned party may include an immediate family member, an employer, a coworker, a teacher, a law enforcement officer, someone dating the respondent, and someone with a child with the respondent. Several conditions apply, read Who can ask the court for a temporary gun violence restraining order in California.
San Diego Restraining Orders