- 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.
- Victor Rak, Middle Ruby on Rails developer Table of Contents Show Web scraping is a popular method New content will be added above the current area of focus upon selectionVictor Rak, Middle Ruby on Rails developer Table of Contents Show Web scraping is a popular method of automatically collecting the information from different websites.
- WEB SCRAPPER YTS is a project with the purpose of extracting data from films from YIFY Torrents - YTS website.
- INTERVIEW: How to start coding on Ruby on Rails? If you don’t have any of those, use ‘gem install’ in the Terminal. Prepare for scraping. The technique of web scraping is basically telling the system to read all the pages and save them locally. If you have a cheap hosting, this might lead to some load issues.
Ruby on Rails which is one of the most preferred web frameworks that enables one to write less code and prevent any kind of repetition. Features NokoGiri, HTTParty and Pry can enable you to set up your web scraper without any hassle.
In this post, I'll walk you through building a web scraper in Ruby on Rails. I'm assuming an intermediate skill level with Rails.
you can a completed version of this project here
Precision transmission muncie indiana. This application can be used to scrape job postings.
Requirements
- ruby-2.1.1
- rails 4.1.1
- local instance of postgresql
Create new rails project
rails new jobscraper -d postgresql
Install gems
bundle install
Create Database
postgres -D /usr/local/pgsql/data
rake db:create
Create 'Job' Resource
rails g scaffold job title:string location:string link:text haveapplied:boolean company:string interested:boolean referred:string
Use scaffold generator to get .json API for free
rake db:migrate
Add Active Admin
add these lines to your
Gemfile
rubygem 'devise'gem 'activeadmin', github: 'gregbell/active_admin'
and runbundle install
Install ActiveAdmin
rails g active_admin:install
Register Jobs with ActiveAdmin
rails generate active_admin:resource job
Customize ActiveAdmin Jobs View
Add Rake Task
rails generate task jobs fetch prune clean
Web Scraper Extension Chrome
If you run
rake -T
you can see these tasks are registered with rake.rake jobs:clean # Delete all jobsrake jobs:fetch # Fill database with Job listingsrake jobs:prune # Delete Jobs that are older than 7 days
Open Source Web Scraper
Write custom nokogiri scripts to populate ActiveRecord attributes.