Conditional where clause generation with squeel

squeel_where.rb

# Class method on Intakes model 

def self.find_for_report(options={})
  joins{intake_grant}.
  where do
    conditions                  = {}
    conditions[pending.eq]      = false
    conditions[intake_grant_id] = options[:grant_id] unless options[:grant_id].blank?
    conditions[intake_date.gt]  = options[:from]     unless options[:from].blank?
    conditions[intake_date.lt]  = options[:to]       unless options[:to].blank?
    conditions
  end
end