How to specify multiple values in where with AR query interface in rails3

Question

Per section 2.2 of rails guide on Active Record query interface here:

which seems to indicate that I can pass a string specifying the condition(s), then an array of

Answer 1

WRONG This is what I used to do for some reason.

keys = params[:search].split(',').map!(&:downcase)
# keys are now ['brooklyn', 'queens']

query = 'lower(city) LIKE ?'

if keys.size > 1
  # I need something like this depending on number of keys 
  # 'lower(city) LIKE ? OR lower(city) LIKE ? OR lower(city) LIKE ?'
 query_array = []
 keys.size.times { query_array << query }
 #['lower(city) LIKE ?','lower(city) LIKE ?']
 query = query_array.join(' OR ')
 # which gives me 'lower(city) LIKE ? OR lower(city) LIKE ?'
end
# now I can query my model
# if keys size is one then keys are just 'brooklyn', 
# in this case it is  'brooklyn', 'queens'
# @posts = Post.where('lower(city) LIKE ? OR lower(city) LIKE ?','brooklyn', 'queens' )
@posts = Post.where(query, *keys )

now however - yes - it's very simple. as nfriend21 mentioned

Model.where(attribute: [value1,value2])

does the same thing