Drupal/C4/RESTful-API-with-a-REST-Client/English

Visual cue	Narration
Slide 1: RESTful API with a REST Client	Welcome to the spoken tutorial on RESTful API with a REST Client.
Slide 2:Learning Objectives What is REST client Retrieve data - GET method Create a new node - POST method Modify an existing node - PATCH method Delete an existing node - DELETE method	In this tutorial, we will learn about REST client. We also learn to use the REST client to Retrieve data using GET method Create a new node using POST method Modify an existing node using PATCH method and Delete an existing node using DELETE method
Slide 3: System requirement To record this tutorial, I am using Ubuntu Linux 16.04 OS Drupal 8 Postman as a REST Client Firefox web browser	To record this tutorial, I am using Ubuntu Linux 16.04 Drupal 8 Postman as a REST client and Firefox web browser You can use any REST client and web browser as per your choice.
Slide 4: Pre-requisites You should have basic knowledge of Drupal RESTful API implemented in your Drupal website If not, for relevant Drupal tutorials please visit http://spoken-tutorial.org A working Internet connection	To practise this tutorial, you should have basic knowledge of Drupal. The RESTful API should have been implemented in your Drupal website. If not, please go through the previous Drupal tutorials on this website. You should also have a working Internet connection.
Open Drupa8 site	First we will confirm whether RESTful API is implemented in our Drupal8 site. To do so, open our Drupa8 site.
Go to Structure and Views	Then go to Structure and Views. Here you can see that RESTful API is implemented in the Events content type.
Show text Postman Client	Note that we have already learnt to implement the RESTful API earlier. Now we will learnt to check our RESTful API using a REST client. I will use Postman as a REST client. You can use any REST client as per your choice.
Slide 6: Postman Client It is a powerful HTTP client for testing web services For installing Postman client, see Additional reading material link	Postman is a powerful HTTP client for testing web services. To install the Postman client, refer to the Additional reading material link of this tutorial.
Show text Bitnami Drupal Stack	The following steps are applicable to Bitnami Drupal Stack. But most of the steps are applicable to any other Drupal installation, as well.
Open Postman Client	Let us open the Postman client.
Choose GET	First we will learn to retrieve data for Anonymous users using GET method. Choose GET from the drop-down list.
Type http://localhost/drupal/events Highlight localhost:8080 Highlight drupal Highlight events	Recall that earlier we had implemented the RESTful API on our Events content type. We will now enter the path of our RESTful API. Here localhost:8080 is my server name. If you are not using Bitnami Drupal stack, please use localhost instead of localhost:8080. drupal is the folder of my Drupal instance. events is the content type on which we have configured the RESTful API.
Click Send Point to the result	Now click on the Send button at the top right corner. You can see here the contents of our events content type in json format.
Click plus button Type the path	Next let us learn to retrieve a single node. Click on the plus button at the top panel to add a new tab. Choose GET from the dropdown list. We have to give the exact path of the particular node.
Click Send Point to the result	Click on the Send button. You can see here the content of that particular node is retrieved. <<PAUSE>>
Click plus button Choose POST	Next let us learn to create a new node for Authenticated users using POST method. Click on the plus button at the top panel to add a new tab. Choose POST from the drop-down list.
Type http://localhost:8080/drupal/entity/node?_format=hal+json Highlight localhost:8080 Highlight drupal Highlight /node?_format=hal+json	Type the path as shown. Here localhost:8080 is my server name. drupal is the folder of my Drupal instance. We have to hard-code the rest of the things.
Change Type as Basic Auth	Under Authorization, we will change the Type as Basic Authentication.
Type username and password	Now we will give the username and password of our Drupal website.
Click Preview Request	Click on the Preview Request button at the left hand side to update our request.
Click Headers tab Point to Authentication	Click on the Headers tab. Here you can see the token for the basic authentication.
Type Content-Type as application/hal+json	We will set the Content-Type to application/hal+json.
Click Body tab	Now we will go to the Body tab.
Choose raw	Let us change the data format as raw.
{ "_links": { "type": { "href": "http://localhost:8080:8080/drupal/rest/type/node/events" } }, "title":[ { "value": "Created by an authenticated user!!!" } ], "body": [ { "value": " This is an event!!!" } ] }	Here we must declare the required title and type fields. So type the following code. This json code is used to create a new node of the type events. For that we specify the values for title and body fields. The same code is given in the Code files link of this tutorial. Please download and use it.
Click Send	Click on the Send button at the top right corner.
Point to the json code	If the content is successfully posted, you can see the json code of this content at the bottom.
Switch to Drupal site Point to the first event	We can also check the content in our Drupal website. Switch back to our Drupal site. Here you can see the event which is posted from the Postman client. Note that the UID of this post is 100. We will use this UID in the postman client to modify this node. <<PAUSE>>
Switch to Postman Client Click plus button	Next let us learn to modify a node for Authenticated users using PATCH method. Let us switch back to the Postman client. Click on the plus button at the top panel to add a new tab.
Choose PATCH	Choose PATCH from the drop-down list.
Type http://localhost:8080/drupal/node/100 Highlight 100	We will enter the URL of the node which we want to modify. For example, we will modify the node which we created using POST method. The UID of this post is 100. We will enter the URL of the node 100.
Change Type as Basic Auth	Under Authorization, we will change the Type as Basic Authentication.
Type username and password	Now we will give the username and password of our Drupal website.
Click Preview Request	Click on the Preview Request button at the left hand side.
Click Headers tab Point to Authentication	Click on the Headers tab. Here you can see the token for the basic authentication.
Type Content-Type as application/hal+json	We will set the Content-Type to application/hal+json.
Click Body tab	Now we will go to the Body tab.
Choose raw	Change the data format as raw.
Type { "_links": { "type": { "href": "http://localhost:8080/drupal/rest/type/node/events" } }, "title":[ { "value": "Changed by PATCH!!!" } ], "body": [ { "value": " The value is changed by patch method!!!" } ] }	And type the following code here. In this code we modify the values for both the title and the body fields. The same code is given in the Code files link of this tutorial. Please download and use it.
Click Send	Then click on the Send button at the top right corner.
Point to Status OK	You can see the Status as 200 OK which means the content is modified.
Switch to Drupal site Refresh the page Point to the first event	Let us check the content in our Drupal website. Switch back to our Drupal website. Let us refresh the page. Here you can see that the event is successfully modified using the PATCH method. <<PAUSE>>
Choose node 8 Point to node 8 in the URL	Next let us learn to delete an existing node for Authenticated users using DELETE method. I will choose node 100 which was created by me as an authenticated user. Remember that we have permitted the authenticated users to delete their own content only.
Switch to Postman Client Click plus button	Switch back to the Postman client. Click on the plus button to add a new tab.
Choose DELETE	Choose DELETE from the drop-down list.
Type http://localhost:8080/drupal/node/8	We will enter the URL of the node which we want to delete.
Change Type as Basic Auth	Under Authorization, we will change the Type as Basic Authentication.
Type username and password	Now we will give the username and password of our Drupal website.
Click Preview Request	Click on the Preview Request button at the left hand side.
Click Headers tab	Then click on the Headers tab.
Type Content-Type as application/hal+json	We will set the Content-Type to application/hal+json.
Click Send	Click on the Send button at the top right corner.
Point to Status 204 No content	You can see the Status as 204 No content which means the content is deleted.
Switch to Drupal site	Switch back to our Drupal site.
Refresh the page	Let us refresh the page.
Point to Page not found	We can see that the node is successfully deleted. <<PAUSE>>
	This is all about managing content through Postman client. With this, we come to the end of this tutorial.
Slide 7: Summary In this tutorial, we have learnt about- Postman client as a REST client Managing content through Postman client using GET, POST, PATCH and DELETE methods	Let us summarize. In this tutorial, we have learnt about- Postman client as a REST client and Managing content through Postman client using GET, POST, PATCH and DELETE methods
Slide 8: Assignment Create some new articles through REST Client Modify the articles using PATCH method	As an assignment Create some new articles through REST client and Modify the articles using PATCH method
Slide 9: Acknowledgement	The video at the following link summarises the Spoken Tutorial project. Please download and watch it.
Slide 10: Spoken Tutorial Workshops	The Spoken Tutorial Project Team conducts workshops and gives certificates to those who pass online tests. For more details, please write to us.
Slide 11: Acknowledgement	Spoken Tutorial Project is funded by NMEICT, Ministry of Human Resource Development and NVLI, Ministry of Culture Government of India.
	This tutorial is contributed by Vishal Jindal. This is Priya from IIT Bombay signing off. Thanks for joining.

Contributors and Content Editors

Nancyvarkey, Priyacst