Rails Console find users by array of ids
For an array, you can use one of these:
# Will raise exception if any value not foundUser.find( [1,3,5] )# Will not raise an exceptionUser.find_all_by_id( [1,3,5] ) # Rails 3User.where(id: [1,3,5]) # Rails 4If you happen to be using a range, you can use these:
# Will raise exception if any value not foundUser.find((1..4).to_a) #same as User.find([1,2,3,4])# Will not raise an exceptionUser.find_all_by_id(1..4) # Rails 3User.where(id: 1..4) # Rails 4As @diego.greyrobot notes in a comment, a range causes a SQL BETWEEN clause, whereas an array causes a SQL IN clause.
Don't use User.find_by_id() -- It will only return one record, no matter how may IDs you pass in.
Use splash operator:
ids = [1, 2, 3, 4]users = User.find(*ids)Note that it will raise an exception if it fails to find any of the users.