Blog: Posts from February, 2022

Learn how to Create, Read, Update, and Delete data with the RESTful hypermedia.

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Posts from February, 2022
Tuesday, February 15, 2022PrintSubscribe
Lesson: CRUD with Hypermedia

Typical CRUD operations are performed on REST resources with POST, GET, PATCH, PUT, and DELETE methods of HTTP protocol. RESTful API Engine embeds the uniform hypermedia controls create, edit, replace, and delete in the relevant resources to eliminate the guesswork and scrutinizing of API definitions. Learn how to manipulate data with the RESTful hypermedia.

Learn to Create, Read, Update, and Delete data with confidence.

Single page app SPA4 with RESTful Hypermedia and CRUD has the "New" button in the toolbar. The "New Product" form is displayed when the button is pressed. A click on any row in the product grid will open the "Edit Product" form allowing users to change or delete the product.
Single page app SPA4 with RESTful Hypermedia and CRUD has the "New" button in the toolbar. The "New Product" form is displayed when the button is pressed. A click on any row in the product grid will open the "Edit Product" form allowing users to change or delete the product.

"New Product" form will post the field values to the product collection to create a new product in the inventory.
"New Product" form will post the field values to the product collection to create a new product in the inventory.

Users can make changes to the product or delete it from the list.
Users can make changes to the product or delete it from the list.

A confirmation is displayed when users press the Delete button in "Edit Product" form.
A confirmation is displayed when users press the Delete button in "Edit Product" form.

Labels: CRUD, Hypermedia, RESTful
Wednesday, February 9, 2022PrintSubscribe
Lesson: Standalone SPA5 with REST Level 2 and OAuth 2.0

This client app is the look-alike of the SPA4. It works with the REST resources directly. The HTTP methods and URLs are embedded in the code. If you have fallen in love with the hypermedia, then you may find it as a disadvantage. If you are not convinced and prefer the traditional REST, then use this client app as the foundation for your next hybrid or native application. This app in the lesson displays a list of products from the RESTful application created with Code On Time. Its users are authenticated with OAuth 2.0 Authorization Code flow with PKCE. The user picture and email are extracted from JWT courtesy of OpenID Connect.

What is different? This app is not taking advantage of the hypermedia. Instead it makes use of the REST resources with the appropriate HTTP methods. Hence the REST Level 2 designation according to the Richardson Maturity Model.

Standalone SPA5 with REST Level 2 and OAuth 2.0
Standalone SPA5 with REST Level 2 and OAuth 2.0

Monday, February 7, 2022PrintSubscribe
Lesson: Standalone SPA4 with RESTful Hypermedia and OAuth 2.0

The purpose of this tutorial is to create a standalone Single Page Application that uses the Authorization Code Flow with PKCE to authenticate the end users. The user picture and email are extracted from JWT courtesy of OpenID Connect. This app can be hosted on any web server of your choice.

Start the Standalone SPA4 with RESTful Hypermedia and OAuth 2.0 segment.

Standalone SPA4 with RESTful Hypermedia and OAuth 2.0
Standalone SPA4 with RESTful Hypermedia and OAuth 2.0

The user interface of anonymous user in the standalone SPA4 with RESTful Hypermedia and OAuth 2.0
The user interface of anonymous user in the standalone SPA4 with RESTful Hypermedia and OAuth 2.0

Account Access consent form presented to the user during the OAuth 2.0 Authorization Code flow with PKCE in the application created with Code On Time.
Account Access consent form presented to the user during the OAuth 2.0 Authorization Code flow with PKCE in the application created with Code On Time.

Account selector allow users to switch their identity when a client app is requesting account access.
Account selector allow users to switch their identity when a client app is requesting account access.