How could I Turn 2 arrays and 1 hash into single hash by Ruby? -

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my question

here, have 2 arrays , 1 hash,

@key_array = %w(year entry amount)  @nums = {   "sales": [1000, 2000, 3000, 4000],   "net_income": [20, 30, 50, 60], }  @years = [2011, 2012, 2013, 2014]

what turn 3 this

[{"year"=>2011, "entry"=>:sales, "amount"=>1000},  {"year"=>2012, "entry"=>:sales, "amount"=>2000},  {"year"=>2013, "entry"=>:sales, "amount"=>3000},  {"year"=>2014, "entry"=>:sales, "amount"=>4000},  {"year"=>2011, "entry"=>:net_income, "amount"=>20},  {"year"=>2012, "entry"=>:net_income, "amount"=>30},  {"year"=>2013, "entry"=>:net_income, "amount"=>50},  {"year"=>2014, "entry"=>:net_income, "amount"=>60}]

so far, have tried ruby code...

def build_entry_nums_hash   num_arr = []   @years.each |year|     @nums.each |key, value|       value.each |fin|         value_array = [year, key, fin]         hash = {}         @key_array.zip(value_array).each { |k, v| hash[k] = v }         num_arr << hash       end     end   end   num_arr end

it returns expected, bit wrong. returns unnecessary hashes. 

 [{"year"=>2011, "entry"=>:sales, "amount"=>1000},  {"year"=>2011, "entry"=>:sales, "amount"=>2000},  {"year"=>2011, "entry"=>:sales, "amount"=>3000},  {"year"=>2011, "entry"=>:sales, "amount"=>4000},  ......  {"year"=>2014, "entry"=>:net_income, "amount"=>20},  {"year"=>2014, "entry"=>:net_income, "amount"=>30},  {"year"=>2014, "entry"=>:net_income, "amount"=>50},  {"year"=>2014, "entry"=>:net_income, "amount"=>60}]

would give me advice?

current situation

i not sure necessary, please read through if concerned why have convert arrays , hash 1 hash.

i trying parse financial data website using nokogiri. data written in html table tag , looks excel spreadsheet. goal display data using rails. currently, able numbers , struggling how put them rails db. it's if like..

findata.create{"year"=>2011, "entry"=>:sales, "amount"=>1000}

sine easy financial numbers in row, made hahs @num. need mix other 2 arrays , hash need.

edit: have corrected mistakes in array hash

arr = [] @nums.each |num_key, num_arr|   @years.each_with_index |year,i|     arr << {"year" => year, "entry" => num_key.to_sym, "amount" => num_arr[i]}   end end;arr

gives me

[{"amount"=>20, "entry"=>:net_income, "year"=>2011}, {"amount"=>30, "entry"=>:net_income, "year"=>2012}, {"amount"=>50, "entry"=>:net_income, "year"=>2013}, {"amount"=>60, "entry"=>:net_income, "year"=>2014}, {"amount"=>1000, "entry"=>:sales, "year"=>2011}, {"amount"=>2000, "entry"=>:sales, "year"=>2012}, {"amount"=>3000, "entry"=>:sales, "year"=>2013}, {"amount"=>4000, "entry"=>:sales, "year"=>2014}]

edit: put ";arr" after loop you're left arr variable holds hashes.


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