/Your-Blog

Blogging app using Rails

Primary LanguageRuby

Demo

What has been used?

  • Rails 4.2.5
  • ruby 2.3.4p301
  • Cloud9 ide

How to set up?

  • clone the project in a rails workspace in Cloud9
  • run "rake db:migrate"
  • Then to run the server type "rails s -b $IP -p $PORT"

App Specification

  • Model

    • Article
    • Category
    • User

  • Database Tables

    • Articles Columns : ID(rails generated), Title, Description, User_id
    • Users Columns : ID(rails generated), username, email, admin(T/F) *article_categories Columns : article_id, category_id
    • One-to Many relation with the user and articles.
    • Many-to-Many relation between article and categories.

  • CRUD Operation : create, read, update, delete

  • Naming Convention:

    • Model - Singular first letter Uppercase(Article)
    • Tablename - Plural, lower case of model name(articles)
    • Model name file - all lowercase but singular(article.rb)
    • Controller_name - Plural of model(articles_controller.rb)

Important Notes

  • To run server "rails s -b $IP -p $PORT"
  • gems are ruby programs and libraries.
  • bundle install is bundler gem which goes to ruby gems and install all the default gems.
  • Routes are in routes.rb
  • Helpers are common logic for views.
  • database.yml for database configuration.
  • seeds.rb for database migrations storage.
  • All the logs from server output will be stored in logs.
  • Public folder has html pages that are directly available.
  • Automated tests happened in test directory.
  • In vendor we have all installed gem files.
  • README.md contains information which we want to expose about our application.
  • By default web server is webrick.
  • "rake routes" cmd is for checking what routes are available.
  • action means method in controller class.
  • for each action we need template in views.
  • <% %> for writing ruby code inside template.
  • <%= this is going to render what is evaluated.
  • Rails use active record pattern to communicate with database.
  • "rails generate scaffold Article title:string description:text" will create table named Article and corresponding controller and model routes and all other things which are required.
  • "rails generate scaffold Model columns:type model:references" for creating a foreign key reference between models.
  • "rails destroy scaffold Model" to destroy a model.
  • "rake db:migrate" for migrating database by creating tables.
  • "rake route | grep articles" to see all the routes for articles.
  • "CRUD" operation comes inbuilt!!!
  • "rails generate migration create_articles" to generate a migration.
  • Model.create(args) for direct entry of values.
  • "article.errors.any?" to check if there is any error with article entry.
  • "article.errors.full_messages" to show the full message related to error.
  • "application.html.erb" file wraps all the views.
  • Partials are used to make code redundent "_form.html.erb"
  • "heroku run rake db:migrate" for migrating databse with heroku.
  • "has_many" should be added in the model which has one to many relation.
  • Any change is instantly reflected in the Active Record objects. The mapping that binds a given Active Record class to a certain database table will happen automatically in most common cases, but can be overwritten for the uncommon ones.
  • "rails generate migration add_user_id_to_articles" to create association between articles and users
  • "byebug" gem is used for debugging.
  • "has_secure_password" method in the model user.rb.
  • "gem bcrypt" in the gemfile.
  • password_digest attribute in the users table.
  • One way hashed digest of a string is stored by password_digest.
  • resource.authenticate('password') for comparing password.
  • Methods that are crreated in application controller are available to all the controllers.Not available in views by default.
  • setup method will start first whenever we start testing.
  • "rake test" cmd to start all test cases.

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