Ruby on Rails is a full-stack web application framework written in Ruby. It uses the MVC pattern and convention over configuration principles. Rails makes it possible to develop database-backed web applications rapidly by minimizing configuration through conventions and providing scaffolding. Key Rails concepts include Active Record for ORM, migrations for schema changes, routing for URLs, controllers for application logic, views for presentation, and testing frameworks. Rails emphasizes productivity through conventions that reduce configuration overhead.
Slides from my presentation at WellRailed (27th July 2011)
Additional Links: http://ryanbigg.com/guides/asset_pipeline.html
twitter: @static_storm
blog: http://incitecode.com
This presentation was given at the Barcelona on Rails meetup on October 27, 2019.
The live demo code can be found at https://github.com/JSFernandes/rails6-multi-db
Spark is a fast and general processing engine compatible with Hadoop data. It can run in Hadoop clusters through YARN or Spark's standalone mode, and it can process data in HDFS, HBase, Cassandra, Hive, and any Hadoop InputFormat. It is designed to perform both batch processing (similar to MapReduce) and new workloads like streaming, interactive queries, and machine learning.
Slides from my presentation at WellRailed (27th July 2011)
Additional Links: http://ryanbigg.com/guides/asset_pipeline.html
twitter: @static_storm
blog: http://incitecode.com
This presentation was given at the Barcelona on Rails meetup on October 27, 2019.
The live demo code can be found at https://github.com/JSFernandes/rails6-multi-db
Spark is a fast and general processing engine compatible with Hadoop data. It can run in Hadoop clusters through YARN or Spark's standalone mode, and it can process data in HDFS, HBase, Cassandra, Hive, and any Hadoop InputFormat. It is designed to perform both batch processing (similar to MapReduce) and new workloads like streaming, interactive queries, and machine learning.
Azure App Configuration with .NET applicationsChristian Nagel
Use Azure App Configuration with .NET - configure the configuration provider, use user secrets for the connection string, use DefaultAzureCredential during development and in production, feature flags, key vaults...
Oak, the architecture of Apache Jackrabbit 3Jukka Zitting
Apache Jackrabbit is just about to reach the 3.0 milestone based on a new architecture called Oak. Based on concepts like eventual consistency and multi-version concurrency control, and borrowing ideas from distributed version control systems and cloud-scale databases, the Oak architecture is a major leap ahead for Jackrabbit. This presentation describes the Oak architecture and shows what it means for the scalability and performance of modern content applications. Changes to existing Jackrabbit functionality are described and the migration process is explained.
Dotnet- An overview of ASP.NET & ADO.NET- Mazenet solutionMazenetsolution
For youtube videos: bit.do/devent
Get to know about Microsoft's ASP.NET & ADO.NET .
To know more this webinar visit http://www.mazenet-chennai.in/net-event.html
To know more our other webinar's visit http://www.mazenet-chennai.in/mazenet-events.html
Practical Cross-Dataset Queries with SPARQL (Introduction)Richard Cyganiak
Introduction slide deck for the tutorial on “Practical Cross-Dataset Queries for the Web of Data” we presented at WWW2012. The tutorial homepage, including other presentations, is here: http://latc-project.eu/events/www2012-tutorial-cross-dataset-queries
Presentation for the Dutch Open University on Lift, the webframework written in Scala. Though the slides are light on content, the sample application that was used throughout the presentation can be found at https://github.com/sammy8306/Lift/tree/lift_ou/playground and should give more than enough insight into a working Lift application
There is a high demand for companies to publish and promote their content on the web. To accommodate this demand Alfresco has provided a number of solutions covering editorial to web tier. As an example of this demand Ixxus was commissioned by a leading business information publisher to produce a microsite for ‘teaser’ content to increase subscriptions of their main site. To deliver this Ixxus utilized a number of features provided by Alfresco, such as services like the Transfer Service, the web scripts framework, and Surf. The majority of these features now make up the mainstay of Alfresco’s Web Quick Start WCM solution. The goal of this session is to demonstrate a real world example of how the combination of Alfresco, Surf and CMIS offers a great platform for developers to produce content-rich websites quickly. The session will cover: Using Spring Roo to construct a Surf application, Benefits of using Spring Surf, Using the Transfer Service, OpenCMIS in Surf, Varnish your Surf application, and What’s next
Ruby on Rails, often simply referred to as Rails, is an open-source web application framework written in Ruby. It follows the Model-View-Controller (MVC) architectural pattern, which separates an application into three interconnected components to promote code Ruby Rails Web Development organization and maintainability. Ruby on Rails has gained popularity for its focus on developer productivity and its convention-over-configuration philosophy, which significantly reduces the need for boilerplate code and configuration.
Azure App Configuration with .NET applicationsChristian Nagel
Use Azure App Configuration with .NET - configure the configuration provider, use user secrets for the connection string, use DefaultAzureCredential during development and in production, feature flags, key vaults...
Oak, the architecture of Apache Jackrabbit 3Jukka Zitting
Apache Jackrabbit is just about to reach the 3.0 milestone based on a new architecture called Oak. Based on concepts like eventual consistency and multi-version concurrency control, and borrowing ideas from distributed version control systems and cloud-scale databases, the Oak architecture is a major leap ahead for Jackrabbit. This presentation describes the Oak architecture and shows what it means for the scalability and performance of modern content applications. Changes to existing Jackrabbit functionality are described and the migration process is explained.
Dotnet- An overview of ASP.NET & ADO.NET- Mazenet solutionMazenetsolution
For youtube videos: bit.do/devent
Get to know about Microsoft's ASP.NET & ADO.NET .
To know more this webinar visit http://www.mazenet-chennai.in/net-event.html
To know more our other webinar's visit http://www.mazenet-chennai.in/mazenet-events.html
Practical Cross-Dataset Queries with SPARQL (Introduction)Richard Cyganiak
Introduction slide deck for the tutorial on “Practical Cross-Dataset Queries for the Web of Data” we presented at WWW2012. The tutorial homepage, including other presentations, is here: http://latc-project.eu/events/www2012-tutorial-cross-dataset-queries
Presentation for the Dutch Open University on Lift, the webframework written in Scala. Though the slides are light on content, the sample application that was used throughout the presentation can be found at https://github.com/sammy8306/Lift/tree/lift_ou/playground and should give more than enough insight into a working Lift application
There is a high demand for companies to publish and promote their content on the web. To accommodate this demand Alfresco has provided a number of solutions covering editorial to web tier. As an example of this demand Ixxus was commissioned by a leading business information publisher to produce a microsite for ‘teaser’ content to increase subscriptions of their main site. To deliver this Ixxus utilized a number of features provided by Alfresco, such as services like the Transfer Service, the web scripts framework, and Surf. The majority of these features now make up the mainstay of Alfresco’s Web Quick Start WCM solution. The goal of this session is to demonstrate a real world example of how the combination of Alfresco, Surf and CMIS offers a great platform for developers to produce content-rich websites quickly. The session will cover: Using Spring Roo to construct a Surf application, Benefits of using Spring Surf, Using the Transfer Service, OpenCMIS in Surf, Varnish your Surf application, and What’s next
Ruby on Rails, often simply referred to as Rails, is an open-source web application framework written in Ruby. It follows the Model-View-Controller (MVC) architectural pattern, which separates an application into three interconnected components to promote code Ruby Rails Web Development organization and maintainability. Ruby on Rails has gained popularity for its focus on developer productivity and its convention-over-configuration philosophy, which significantly reduces the need for boilerplate code and configuration.
Welcome To
Ruby Rails Web Development
Ruby on Rails Development Benefits and Pitfalls
Understanding how the many components of digital design and development are connected is crucial for web developers. Each pillar supports the span, much like a bridge, and if any one of them fails, the entire structure falls. Both poor design and poorly written code can obliterate even the most complex design solutions. Every component contributes to the final result, a user-friendly product.
We have provided you with some background information on the terms, procedures, and tools used in web development in previous posts. This article will carry on that theme. We're going to discuss one of the widely used web development tools, Ruby on Rails, and share some of its advantages and disadvantages with you.
brief history
A brief history will be presented first. Ruby is an open source, dynamic, object-oriented programming language with an emphasis on efficiency and productivity. The original version of the language, Ruby, which was created by Yukihiro "Matz" Matsumoto, was initially made available in the 1990s. Today, it provides power to popular services like Basecamp, Hulu, the original Twitter, and Living Social. Because Ruby offers a framework that supports a high level of developer flexibility, many businesses, including BBW, Cisco, CNET, IBM, JP Morgan, NASA, and Yahoo, employ it in some capacity.
The open-source Ruby on Rails web application framework is designed to increase programmers' long-term productivity. From his work on the project management tool Basecamp at the web application firm also known as Basecamp, David Heinemeier Hansson extracted Ruby on Rails. In July 2004, Hansson first made Rails available as open source. Even well-known companies like Amazon and eBay have Rails projects.
From my work on Basecamp, a project collaboration tool from 37signals, Rails (Ruby on Rails) was extracted. It was therefore driven by needs rather than predictions. And I think a large reason why we're doing so well right now is because of it. I didn't make an effort to consider what certain programmers could require for a dream job. I merely constructed what I required to complete my work cheerfully. David Heinemeier Hansson, the author of Ruby on Rails, is a different interviewee.
What is Ruby on Rails?
Model-view-controller (MVC) is how Rails apps work. This technique is utilized by numerous other web frameworks, including AngularJS (JavaScript), Django (Python), and CakePHP (PHP).Models, Views, and Controllers are the three components that make up the apps, according to this. These parts perform the following functions:
They include the functionality needed to modify and get the many types of data the app uses. A model is represented as a class in Rails. They are not low-level data types like strings or arrays.
Create the logic that connects views and models (and the data they are linked with). They perform input processing, make method calls, and send data to
Since its public unveiling in 2004, Ruby on Rails has taken the web development world by storm. Rails is an open-source framework, built using the Ruby programming language, that promotes high productivity and reduced development times for real-world web sites. This talk will provide a high-level tour of the features of Ruby on Rails. It will also show how this technology is being leveraged to create on-line businesses and web sites. You don't have to be a programmer to learn more about how Ruby on Rails can power your on-line business.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
5. What is Rails?
• Ruby on Rails is an extremely productive web
application framework written in Ruby by
David Heinemeier Hansson in 2005.
• You could develop a web application at least
ten times faster with Rails than you could
with a typical Java framework.
• An open source Ruby framework for
developing database-backed web
applications.
• No compilation phase required.
• Full-stack framework.
• Convention over Configuration
6. Full-stack framework.
•Includes everything needed to create a database-driven
web application, using the Model-View-Controller
pattern.
•Being a full-stack framework means all the layers are
built to work seamlessly together with less code.
•Requires fewer lines of code than other frameworks.
8. Convention over Configuration
•Rails shuns configuration files in favor of conventions,
reflection, and dynamic runtime extensions.
•Your application code and your running database
already contain everything that Rails needs to know!
12. App directory structure
• app - main app directory
• bin - rails needed scripts
• config - configurations for environment, routes,
etc.
• db - schema.db, migrations
• lib - folder for code not included in main app (like
your own gems)
• log - log files
• public - assets for public access, 404 page etc.
• test(spec) - test files
• tmp - place for temporary files
• vendor -folder used for third-party libraries.
13. Gemfile
A Gemfile is a file
which is used for
describing gem
dependencies for
Ruby programs.
What is Gemfile?
15. Development Workflow
• Use the rails command to create the basic skeleton of the application.
• Create a database on the MySQL server to hold your data.
• Configure the application to know where your database is located and the login
credentials for it.
• Create Rails Active Records (Models), because they are the business objects
you'll be working with in your controllers.
• Generate Migrations that simplify the creating and maintaining of database tables
and columns.
• Write Controller Code to put a life in your application.
• Create Views to present your data through User Interface. us start with creating
our library application.
17. ActiveRecord
• Rails Active Record is the Object/Relational Mapping (ORM) layer
supplied with Rails.
• Each Active Record object has CRUD methods for database access
18. Associations
Active Record supports three types of
associations:
• One-to-one (has_one);
• One-to-many (has_many);
• Many-to-many (has_and_belongs_to_many,
polymorphic);
19. Model in DB
• Each entity (such as book) gets a table in the database named after
it, but in the plural (books).
• Each such entity-matching table has a field called id, which contains a
unique integer for each record inserted into the table.
• Given entity x and entity y, if entity y belongs to entity x, then table y
has a field called x_id.
• The bulk of the fields in any table store the values for that entity's
simple properties (anything that's a number or a string).
20. Validations
The implementation of validations is done in a
Rails model. The data you are entering into the
database is defined in the actual Rails model, so it
only makes sense to define what valid data
entails in the same location. Also you can provide
custom validations.
21. Migrations
Rails Migration allows you to use Ruby to define
changes to your database schema, making it possible
to use a version control system to keep things
synchronized with the actual code.
23. Routes
The routing module
provides URL rewriting in
native Ruby. It's a way to
redirect incoming
requests to controllers
and actions. Best of all,
Rails' Routing works with
any web server.
Routes are defined in:
app/config/routes.rb
24. `
Rails named routes starts
with HTTP verb. It
supports all the verbs
such as: GET, POST,
PUTPATCH, DELETE.
25. Routes
Also rails have a special
route for root path.
You can match any url
to any action.
28. Controller
The Rails controller is the
logical center of your
application. It coordinates the
interaction between the user,
the views, and the model.
31. Strong params
It provides an interface for
protecting attributes from end-
user assignment. This makes
Action Controller parameters
forbidden to be used in Active
Model mass assignment until
they have been whitelisted.
32. Action View
In Rails, web requests are handled by Action Controller and Action View. Typically,
Action Controller is concerned with communicating with the database and performing
CRUD actions where necessary. Action View is then responsible for compiling the
response.
Action View templates are written using embedded Ruby in tags mingled with HTML.
34. Helpers
The Rails framework provides a
large number of helpers for
working with assets, dates,
forms, numbers and model
objects, to name a few. These
helpers are available to all
templates by default.
In addition to using the
standard template helpers
provided, creating custom
helpers to extract complicated
logic or reusable functionality
is strongly encouraged.
41. Homework
Write a simple web app which allows you to create an
event(bbq, pizza-day, or etc.). Add credentials to it (place, date,
etc…). Add two roles, admin, and attendee. Admin can add an
event, delete event, add a description, edit an event, add
comments to the event. The attendee can join an event, can
leave an event, can add comments to the event. You will need to
cover it by your preferred test framework and deploy to Heroku.