CODEWITHSUNDEEP
ruby
ken
ken

Reputation: 3

Using Ruby select method for nested Hash

I have a hash that has been parsed from HTML

The hash looks like this except it has 38 nested hashes

@ProductionInfoDataHash = {
    0=>{:name=>"Name", :primSegment=>"Primary Segment", :unitsSold=>"Units Sold", :unitsInventory=>"Unit Inven tory", :revisionDate=>"Revision Date", :age=>0.0, :mtbf=>"MTBF", :pfmnCoord=>0.0, :sizeCoord=>0.0, :price=>"rice", :matirialCost=>"aterial Cost", :laborCost=>"abor Cost", :contrMarg=>0.0, :overtime=>0.02, :automation=>"Auto mation Next Round", :capacity=>"Capacity Next Round", :plantUtiliz=>0.0},
    1=>{:name=>"", :primSegment=>"", :unitsSold=>"", :unitsInventory=>"", :revisionDate=>"", :age=>0.0, :mtbf=>"", :pfmnCoord=>0.0, :sizeCoord=>0.0, :price=>nil, :matirialCost=>nil, :laborCost=>nil, :contrMarg=>0.0, :overtime=>0.0, :automation=>"", :capacity=>"", :plantUtiliz=>0.0}, 
    2=>{:name=>"Able", :primSegment=>"Trad", :unitsSold=>"999", :unitsInventory=>"189", :revisionDate=>"11/21/2015", :age=>3.1, :mtbf=>"17500", :pfmnCoord=>5.5, :sizeCoord=>14.5, :price=>"28.00", :matirialCost=>"11.59", :laborCost=>"7.49", :contrMarg=>0.29, :overtime=>0.0, :automation=>"4.0", :capacity=>"1,800", :plantUtiliz=>0.66},
    3=>{:name=>"Acre", :primSegment=>"Low", :unitsSold=>"1,763", :unitsInventory=>"39", :revisionDate=>"5/25/2014", :age=>4.6, :mtbf=>"14000", :pfmnCoord=>3.0, :sizeCoord=>17.0, :price=>"21.00", :matirialCost=>"7.81", :laborCost=>"7.12", :contrMarg=>0.27, :overtime=>0.3, :automation=>"5.0", :capacity=>"1,400", :plantUtiliz=>1.29},
    4=>{:name=>"Adam", :primSegment=>"High", :unitsSold=>"366", :unitsInventory=>"40", :revisionDate=>"4/19/2017", :age=>1.7, :mtbf=>"23000", :pfmnCoord=>8.0, :sizeCoord=>12.0, :price=>"38.00", :matirialCost=>"15.98", :laborCost=>"8.57", :contrMarg=>0.33, :overtime=>0.0, :automation=>"3.0", :capacity=>"900", :plantUtiliz=>0.45}
}

I want to iterate over the nested hashes based on the value of the :primSegment key.

the relevant part of my code is

def productionInfoData_to_Sheet

    g  = @ProductionInfoDataHash.select{ |item| item[:primSegment] == "Trad" } # get all nested hashes that have a [:primSegment] == "Trad"
    puts g                                                                 
 end

I get the error `[]': no implicit conversion of Symbol into Integer (TypeError)

Upvotes: 0

Views: 1948

Answers (2)

Maycon Seidel
Maycon Seidel

Reputation: 181

You need to consider the key and value on your select query.

Like

@ProductionInfoDataHash.select { |key, value| value[:primSegment] == 'Trad' }

Also, I recommend you to check the most used ruby style guide

you shouldn't use CamelCase on variables like ProductionInfoDataHash

Upvotes: 1

Subash
Subash

Reputation: 3168

You are not including the key in the select statement, try this

@ProductionInfoDataHash.select{ |index, item| item[:primSegment] == "Trad" }

Upvotes: 1

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