How to do Data Scraping in Ruby on Rails by Processing CSV
This article is about How to do simple ruby web scraping by processing CSV.
In this article, we will create a Ruby on Rails application to scrap the link uploaded from a CSV file and find the occurrence of the link on a particular page.
In the below Ruby on Rails application development, the user needs to pass a CSV file and list of the user’s email to whom the parsed CSV will be sent.
In the CSV file, there will be 2 columns
Let’s start creating a Rails Application
$ rails new scrape_csv_data $ cd scrape_csv_data
$ rails g scaffold UploadCsv generated_csv:string csv_file:string
This will create all the required models, controllers, and migrations for csv_file. Run the migration using the below command.
$ rails db:migrate
gem 'carrierwave', '~> 2.0'
Then,
$ bundle install
$ rails generate uploader Avatar
class UploadCsv < ApplicationRecord mount_uploader :csv_file, AvatarUploader
$ rails generate job genrate_csv
After uploading the file check the scrap generated file will be updated. You can check the generated file in /scrape_data/public/result_data.csv
$ rails generate mailer NotificationMailer
First, we will generate the mailer by using the below command.
Add this code inside the notification mailer.
Also, we need to add mail configuration inside
config/environments/development.rb or production.rb.
app/views/notification_mailer/send_csv.html.erb
Thank you!
Originally published at https://www.botreetechnologies.com on February 12, 2021.
