ruby on rails - Counting associated objects from an array of parent objects -


i working report counts neighbors in household - looking @ using either helper method, simple query or both

a household object has several neighbors , want count total number of neighbors in select group of households. have array of households ids:

@household_ids = [31, 15, 30, 38, 1, 5, 32, 25, 10, 26, 14,29]

i tried this:

def household_neighbor_count(houses)    houses.each  |id|     @neigh  = household.find(id).neighbor_count    @neigh   end end

which doesn't work - returns list of ids

since rails activerecord query , shot in pseudo sql:

 neighbors household_id == household_id in @household-ids

i using squeel if helps

how either -approach fine or recommendation of best approach great

it unclear trying do, guess want:

houses.map{|id| household.find(id).neighbor_count}.inject(:+)

if there duplicates within neighbors among houses, need method set of neighbors given house, not count. , since have not shown such method, guess either not issue, or question inappropriate.


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