Question

I am building a web application that shows stock data trends and stock quotes. The data has been sent to me in an excel file and I now need to load it into the database. The excel file has daily stock data for each stock, with columns in this format:

date | bid | offer | price | volume

And each stock is in a separate work sheet in the file, as below, each block is a worksheet:

Stock1 | Stock2 | Stock3 | Stock4

What is the best way for me to load this data from the excel spreadsheet to my DailyQuotes table, the migration file for my DailyQuotes table is below:

class CreateDailyQuotes < ActiveRecord::Migration
  def change
    create_table :daily_quotes do |t|
      t.date :date
      t.decimal :bid
      t.decimal :offer
      t.decimal :price
      t.integer :volume
      t.integer :stock_id

  t.timestamps
    end
  end
end

I have already created a Stocks table with the StockName and ID as columns.

Answer 1

The gem ‘spreadsheet’ maybe the best choice to parse old excel format ‘xls’. Check this guide

And if you want to deal with xlsx, maybe rubyXL is better.