Ruby on Rails Models and Associations

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1:37:10

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01 - Introduction

01 - Efficient, object-oriented data management.mp4

00:45

02 - What you should know.mp4

00:43

03 - Using the exercise files on GitHub.mp4

01:47

02 - 1. Smarter Models

01 - Smart models by design.mp4

06:40

02 - More ActiveRecord query methods.mp4

05:06

03 - Select data from a query.mp4

05:57

04 - Named scopes.mp4

04:24

05 - Non-database attributes.mp4

02:27

03 - 2. Data Validations

01 - Overview of validation methods.mp4

05:29

02 - Write validations.mp4

04:45

03 - Use the multipurpose validates method.mp4

03:27

04 - Write custom validations.mp4

04:15

04 - 3. ActiveRecord Callbacks

01 - Overview of callbacks.mp4

03:07

02 - Use callbacks to automate actions.mp4

04:35

03 - Execute callbacks conditionally.mp4

04:42

05 - 4. ActiveRecord Associations

01 - Overview of associations.mp4

03:57

02 - Create a one-to-many association.mp4

02:19

03 - Use a one-to-many association.mp4

04:53

04 - Destroy dependent related records.mp4

04:34

05 - Has and belongs to many associations.mp4

05:52

06 - Rich join associations.mp4

05:56

07 - Traverse a rich join association.mp4

04:17

08 - Join tables during queries.mp4

05:57

06 - Conclusion

01 - Next steps.mp4

01:16

Description

Ruby on Rails can speed up and improve the development of full-featured web applications through powerful tools that provide an object-oriented interface to relational databases and automate common data tasks. In this course, extend your knowledge of Ruby on Rails as instructor Kevin Skoglund covers the built-in features of models and associations in Rails. Learn to apply named scopes, validations, callbacks, and associations to a sample project. Find out how to design smarter models with attributes not in the database and by leveraging efficient queries. Walk through the most useful built-in validation methods and learn to write custom validations. Discover how to trigger automated behaviors as data is saved to the database by using callbacks. Explore effective use of Active Record associations, investigate one-to-many and many-to-many relationships, and learn to construct queries that span several tables.

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Ruby on Rails

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