find_tasker.rb

def find_taskers  
  Tasker.near(job.to_coordinates, 20, units: :km)
    .where(query_params)
    .where(service_ids: { '$all' => required_services })
    .limit(config.list_limit)
end

def query_params
  {
    :id.nin                        => invalid_taskers,
    :active                        => true,
    :availability.in               => [job_week_day],
    :completed_jobs.gte            => min_jobs_quantity,
    :state                         => "verified",
  }
end

def invalid_taskers
  [].tap do |ids|
    ids << already_received_offer
    ids << jobs_invalid
    ids << user_bad_feedbacks
    ids << blocked_taskers
  end.flatten.compact
end