Overview
Grails is an extremely productive, open-source web application framework, based on the Groovy programming language. A dynamic language, Groovy offers attributes similar to programming languages like Ruby, Python, Perl, and Smalltalk. It is based on the OOPs (Object Oriented Programming) concept and is perfect for developing web applications that run consistently on the Java Virtual Machine (JVM). Groovy and Grails is one of the most widely accepted web frameworks as it allows you to write codes easily and combine new Java modules to the existing ones.
Software organizations like Disney, MTV, ESPN and Netflix, have developed their well-known products using Grails, giving added impetus to its rapid increase in popularity. The salary report by Indeed states that the salary of the Groovy on Grails developer ranges from $56,040 per year to $118,572 per year.
KnowledgeHut’s Groovy and Grails course will take you from the basics of Groovy installation, features and functions and object oriented programming, to more advanced topics like metaprogramming and using builders to build custom languages. You will learn about Grails right from the basics of setting up the environment to building innovative, enterprise-ready web, software, and mobile applications application solutions using Groovy and Grails.
Master Groovy and Grails from KnowledgeHut, and gain the knowledge and hands-on skills that you need for a rewarding career as a Groovy and Grails developer!
What You Will Learn
1. Installation and introduction
Install Groovy using sdkman. Learn about the tools that come with the Groovy installation.
2. Variables & Operators
Define Groovy variables.Understand dynamic/static typing support for variables, play with operators.
3. Functions
Learn how to define functions in the Groovy way! Implicit/explicit returns, closures and much more
4. Branching & Looping
Learn to make branches in the code using selection statements. Also learn to write loops in Groovy.
5. Object oriented programming
Learn object oriented constructs & how Groovy achieves pure object orientation in language design.
6. Composition and inheritance
Understand the use of other object oriented concepts like composition, inheritance.
7. Collections
Learn to use groovy collection data types like lists and maps.
8. Exception handling
Learn the use of exceptions to alter the flow of a Groovy program, build your own custom exceptions
9. Metaprogramming
Learn Groovy goodness like meta object protocol, meta class; that add dynamacity to Groovy
10. Builders
Build custom domain specific languages using builders available in the Groovy programming language
11. Introduction and installation
Learn to set up the Grails environment along with a high level tour of the technology
12. Model layer
Learn the Grails solution to object relational mapping (GORM), model relationships, querying etc
13. Controllers
Learn this Grails component that orchestrates the entire request-response flow.
14. Common web concerns
Learn common web concerns like redirect, chaining, data binding; that the controller has to offer
15. View layer
Learn the all powerful groovy server pages (GSP) templating language, and understand JSON views
16. Service layer
Learn to write complex business logic in this Grails component.
17. Profiles
Why have profiles in your Grails project. Practically use REST profile for making rest web services.
18. Other common web concerns
Learn to upload files in grails, cookies, session management, server side validation and much more.
19. Testing
Write unit, integration and functional tests for the various components in a grails application
Prerequisites
Exposure to any other programming language preferably Java, would be an added advantage. A little knowledge about databases and SQL would help.
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Who Should Attend
- Candidates who want to automate day to day programming using the Groovy language
- Java developers looking out for a JVM language that expresses more with less code
- Those looking to use Groovy to build dynamic database driven web apps & api backends
Knowledgehut Experience
Instructor-led Interactive Classroom Experience
Interact with instructors in real-time— listen, learn, question and apply. Our instructors are industry experts and deliver hands-on learning.
Curriculum Designed by Experts
Our courseware is always current and updated with the latest tech advancements. Stay globally relevant and empower yourself with the latest tools and training.
Learn through Doing
Learn theory backed by practical case studies, exercises and coding practice. Get skills and knowledge that can be effectively applied in the real world.
Mentored by Industry Leaders
Our support team will guide and assist you whenever you require help.
Advance from the Basics
Learn concepts from scratch, and advance your learning through step-by-step guidance on tools and techniques.
Code Reviews by Professionals
Get reviews and feedback on your final projects from professional developers.
Curriculum
- Installing sdkman
- Installing groovy development kit using sdkman
- Understanding the various tools like groovyc, groovy shell and groovy console
- Writing very basic commands on the groovy shell
- How groovy compares to other JVM languages like Java
- Defining variables using the ‘def’ keyword
- Dynamic typing
- Explicitly defining data types for a variable
- Arithmetic, relational, logical operators
- Elvis and spaceship operators in groovy
- Defining functions in groovy
- Function with implicit and explicit returns
- Default arguments in functions
- Closures
- Functional programming in groovy
- Functions that take groovy map as argument
- ‘if’ , ‘if-else if-else’ selection statements for branching
- The groovy ‘switch’ statement to achieve branching
- Looping using ‘while’ and ‘for’
- ‘break’ and ‘continue’ statements
- Classes and objects
- Difference between instance variables and static variables.
- Instance and static functions
- Constructors
- Groovy bean class
- On demand encapsulation of object attributes in groovy
- Operator overloading in groovy classes
- Composition
- Inheritance
- Abstract classes
- Interfaces
- Traits
- Organizing groovy code in packages
- Default packages imported in groovy code
- Using the List data type of groovy
- Functional programming on list data structure using groovy closures
- Meta programming on list data structure
- Map data structure in groovy and various operations on a map
- Flow of a program in the event of an exception thrown in the program
- Exception handling using try-catch
- Defining custom exceptions and throwing them
- The finally block
- How groovy exception handling is different from java exception handling
- Meta Object protocol (MOP)
- MetaClass
- Adding dynamic methods to build in groovy classes at run time
- Adding dynamic methods in custom groovy classes at run time
- Introduction to the builder pattern
- Designing domain specific language (DSL) to initialize objects in groovy
- JSON builder
- Object graph builder
- Other builders available in the groovy programming language
- Install grails 3.x latest version using sdkman
- Create your first grails project and open it in an IDE of your choice that has grails support
- Understanding the dependency management and build system
- Tour of the grails documentation
- Introduction to ORM
- Grails ORM models and how to define them
- Connecting grails project to a MYSQL database
- ‘constraints’ closure
- ‘mapping’ closure
- GORM model relationships - one to one, one to many, many to many
- GORM saving, updating, deleting entities
- Querying for GORM entities using dynamic finders, createCriteria and detached where
- Handling model schema changes using database migration plugin
- Defining a grails controller
- Defining actions in a controller
- Mapping of urls to controllers and actions in the controller
- Sending model from action to views
- Redirecting to views
- Storing flash messages
- Implicit request object
- Data binding of incoming request data - To parameters in the action function, command objects
- Handling file uploads
- Introduction to groovy server pages (GSP)
- GSP ‘if’, ‘else’, ‘elseif’ branching tags
- GSP looping using the ‘each’ tag
- Layouting gsp pages
- GSP form tags
- Static resource management tags
- Link tags
- GSP tags for displaying the model errors
- Using GSP tags as method calls
- Internationalization support
- Writing business logic in service component of grails
- Introduction to the Dependency injection (DI)
- Injecting service components in other service components and controller components
- Transaction support in grails services
- Purpose behind profiles
- Introduction to web services and REST
- REST profile in grails
- Introducing other built in profiles in grails
- Declaring constraints in model classes
- Validation on the constraints
- Sharing constraints between multiple classes
- Cookies
- Http Sessions
- Creating interceptors
- Building CRUD interfaces using scaffolding in grails
- Introduction to the testing framework and test support in grails
- Writing unit tests for grails services
- Writing integration tests for complex business scenarios
- Introduction to functional testing
Faq
Faq
If you are looking to build sophisticated solutions that drive your business up, Groovy and Grails is the best-suited framework for complex web-based projects, as it provides all the features that tech juggernauts love. Grails simplifies the process of development, while Groovy is an incredibly flexible language to develop web applications.
This course will help you to understand the basic blocks of web programming with Groovy and Grails. Gain enough skills from our team of experts at KnowledgeHut to become the most sought-after web developer in your organization!
Sign-in today to prove your programming expertise and advance your career!
Using groovy as the programming language for day to day software tasks, use grails to build dynamic database driven web applications
No restrictions ever in the learning experience! Prior exposure to programming using any programming language would be an added advantage.
Yes, KnowledgeHut offers this training online.
On successful completion of the course you will receive a course completion certificate issued by KnowledgeHut.
Your instructors are Web development experts who have years of industry experience.
Finance Related
Any registration cancelled within 48 hours of the initial registration will be refunded in FULL (please note that all cancellations will incur a 5% deduction in the refunded amount due to transactional costs applicable while refunding) Refunds will be processed within 30 days of receipt of written request for refund. Kindly go through our Refund Policy for more details: https://www.knowledgehut.com/refund-policy
KnowledgeHut offers a 100% money back guarantee if the candidate withdraws from the course right after the first session. To learn more about the 100% refund policy, visit our Refund Policy.
The Remote Experience
In an online classroom, students can log in at the scheduled time to a live learning environment which is led by an instructor. You can interact, communicate, view and discuss presentations, and engage with learning resources while working in groups, all in an online setting. Our instructors use an extensive set of collaboration tools and techniques which improves your online training experience.
Need the following to be installed on your personal machine
- SdkMan
- Groovy 2.x (latest version)
- Grails 3.x (latest version)
- MySQL database server and some mySQL client software
- Any IDE of your choice.
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