Not able to place csv data in a Hash - ruby-on-rails

Question

I have a CSV file with two columns:
PPS_Id Amount
123 100
1234 150
I read data from this file and insert in a array using the code below:
CSV.foreach("filename.CSV", headers: true) do |row|
file_details << row.inspect # hash
end
I am then trying to push the data in the file_details into a hash with PPS_Id as key and Amount as Value, I am using the code below:
file_details_hash = Hash.new
file_details.each { |x|
file_details_hash[x['PPS_Id']] = x['Amount']
}
But when I print the result I get nothing just {"PPS_Id"=>"Amount"}
Can you please help

Answer 1

Your code, modified to work
You need to specify the column separator for your csv, and remove inspect.
require 'csv'
file_details = []
CSV.foreach("filename.CSV", headers: true, col_sep: "\s" ) do |row|
file_details << row
end
file_details_hash = Hash.new
file_details.each { |x|
file_details_hash[x['PPS_Id']] = x['Amount']
}
p file_details_hash
#=> {"123"=>"100", "1234"=>"150"}
It now returns what you expected to get.
Shorter solution
Read the csv, drop the first line (header) and convert to a Hash :
p CSV.read("filename.CSV", col_sep: "\s").drop(1).to_h
#=> {"123"=>"100", "1234"=>"150"}

Answer 2

First of all, you are collecting strings into an array (see String#inspect):
file_details << row.inspect
After that you call (sic!) String#[] on that strings:
x['PPS_Id'] #⇒ "PPS_Id", because string contains this substring
That said, your code has nothing but errors. You might achieve what you want with:
csv = CSV.parse(File.read("filename.CSV"), col_sep: "\s")
csv[1..-1].to_h
#⇒ {
# "123" => "100",
# "1234" => "150"
# }

Answer 3

Using inspect will save your CSV rows as strings, so obviously you won't be able get what you need. Instead try this:
file_details = CSV.read("filename.csv")
Read CSV directly will create an 2D array that you can then iterate over, which will look like this: [["PPS_Id", "Amount"], ["123", "100"], ["1234", "150"]]
From there you can slightly modify your approach:
file_details.each do |key, value|
file_details_hash[key] = value
end
To receive a hash like this: {"PPS_Id"=>"Amount", "123"=>"100", "1234"=>"150"}