Drupal/C4/RESTful-API-Implementation/English

Visual cue	Narration
Slide 1: RESTful API Implementation	Welcome to the spoken tutorial on RESTful API Implementation.
Slide 2:Learning Objectives Understand what is RESTful API Learn to implement RESTful API using Views	In this tutorial, we will Understand what is RESTful API Learn to implement RESTful API using Views
Slide 3: System requirement To record this tutorial, I am using Ubuntu Linux 16.04 OS Drupal 8 Firefox web browser	To record this tutorial, I am using Ubuntu Linux 16.04 Drupal 8 and Firefox web browser You can use any web browser as per your choice.
Slide 4: Pre-requisites You should have basic knowledge of Drupal 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. If not, for relevant Drupal tutorials, please visit the link shown. You should also have a working Internet connection.
Slide 5: What is RESTful API It is based on REpresentational State Transfer (REST) technology It is also referred to as a RESTful web service	What is RESTful API? RESTful API is based on REpresentational State Transfer (i.e REST) technology. It is also referred to as a RESTful web service. RESTful API provides methods to external clients to fetch, add or modify data on the server.
Slide 5: (cont.)	For example: Using the same server, we can do a bank transaction either using a mobile app or desktop website.
image	RESTful API is a general purpose API. So any application, such as another website, native mobile apps and IoT devices can exchange data with your server.
Show text RESTful API implementation process Show text Bitnami Drupal Stack	Let us learn the RESTful API implementation process step by step. The following steps are applicable to Bitnami Drupal Stack. But most of the steps are applicable to any other Drupal installation, as well.
Show text Step No. 1 Open Drupal8 site	Step No. 1 First we will open our Drupal8 site and install the required core modules.
Click Extend tab	To do so, go to the Extend tab.
Scroll down to WEB SERVICES	Scroll down and go to the WEB SERVICES section.
Put a check mark on HAL, HTTP Basic Authentication, RESTful Web Services and Serialization	Put a check mark on the following modules: HAL, HTTP Basic Authentication, RESTful Web Services and Serialization.
Click Install button	Then click on the Install button at the bottom, to enable them.
Show text REST UI Show text Creating Dummy Content	We will also need to install the REST UI module manually. I have already installed and enabled it in my machine. To know how to install a module, go through the Creating Dummy Content tutorial in this series.
Show text Step No. 2 Go to Configuration tab -> WEB SERVICES → REST	Step No. 2 Next we will configure the REST resources to accept the requests from a REST client. To do so, go to the Configuration tab. Click on REST under WEB SERVICES.
Point to REST resources Click on Edit of Content	The REST resources page appears now. We will restrict the formats by clicking on the Edit button of Content.
Scroll down Check json	Scroll down. Under Accepted request formats, put a check mark on the json.
Click Save configuration	Click on the Save configuration button at the bottom to save it. Now our Drupal site will accept the json format requests from a REST client.
Show text Step No. 3	Step No. 3 Next we need to set the proper permissions for authenticated users.
Slide 6	In general, there are three kind of users that can use RESTful API. 1. anonymous user 2. authenticated user and 3. authenticated users with permission to modify content Now, we will setup our Drupal for an authenticated user who can create, edit, and delete their own contents.
Go to People tab	To do so, go to People tab.
Click Permissions tab	Click on the Permissions tab.
Scroll down For AUTHENTICATED USER, check Basic Page: Create new content Basic Page: Delete own content Basic Page: Edit own content	Scroll down and for AUTHENTICATED USER, put a checkmark on Basic Page: Create new content Basic Page: Delete own content Basic Page: Edit own content Click on the Save permissions button at the bottom.
	I have enabled the authenticated users to create, edit and delete their own content. You can give permissions based on your requirements.
Show text Step No. 4 Go to Structure -> Content types Point to Events	Step No. 4 Now we need a content type on which we want to implement the RESTful API. Go to Structure tab and click on the Content types. I will use the Events content type to implement the RESTful API. You can use any content type as per your requirement.
Show text Step No. 5 Show text Displaying Contents using Views	Step No. 5 Now we need a View for our Events content type. To know about Views, go through the tutorial Displaying Contents using Views of this series.
Click Structure → Views	To create a new view, go to Structure and Views.
Click Add new view Type Events_view	Click Add view and let’s name it as Events underscore view.
Change type as Events	Change the content of type from All to Events.
Under REST EXPORT SETTINGS, check Provide a REST export	Under REST EXPORT SETTINGS, check Provide a REST export.
Type REST export path as events	We will type the REST export path as events.
Click Save and edit	Click Save and edit button at the bottom.
Go to FORMAT → Show → Entity	Now we will set up the display of our events. Under FORMAT section, in the Show option, click on the Entity.
Choose Fields Click Apply	In the REST export dialog box that appears, choose Fields option. Click on the Apply button.
Click Apply	In the Row style options dialog box, keep the settings as it is. Then click on the Apply button. This will enable us to add fields to our view.
Click Add	Now we can add all the fields of our Events content type. Click on the Add button. This brings up the list of available fields.
In the Search box, type body	In the Search box, type body.
Choose Body, click Add and configure fields	Choose Body from the list, then click on the Add and configure fields button.
Click Apply	Click on the Apply button.
Click Add	Again click on the Add button to add another field.
Type id and choose ID	Search for id and choose ID from the list.
Click Add and configure fields Click Apply	Click on the Add and configure fields button. Then click on the Apply button.
Point to the path /events Click Save	Under PATH SETTINGS, we can see the path of our events view. We will click on the Save button to save this view. <<PAUSE>>
Show text Step No. 6 Click Add	Step No. 6 Next we will create a new view to retrieve the data. Click on the Add button in the Displays panel.
Select REST export	Select REST export option. Now let us configure this new view.
Click Entity	Under FORMAT section, click on the Entity.
Choose Fields, click Apply	Choose Fields option and click on the Apply button.
Put check mark to all the fields Click Apply	Check all the fields that we want in our content type. And click on the Apply button.
Point to FIELDS	Here you can see that our required fields are added now.
Click No path is set	Under PATH SETTINGS, we will set the path by clicking on the No path is set link.
In Path field, type events/% Highlight the hint under the field.	In the Path field, type events slash percentage sign. Percentage sign is used to represent values that will be used for the contextual filter.
Click Apply	Click on the Apply button at the bottom.
Click ADVANCED	Now, in the right hand side, click on the ADVANCED option.
Under CONTEXTUAL FILTERS, click Add	Under CONTEXTUAL FILTERS, click on the Add button.
Type id in the search box Choose ID	We will add an ID for the contextual filter to refer our node. Search for id and choose the ID from the list.
Click Apply	Click on the Apply button.
Click Apply	Keep the other settings as it is. Then click on the Apply button.
Click Save	Click on the Save button to save this configuration. With this, we have successfully implemented the RESTful API in our Drupal site using Views. <<PAUSE>>
	Later in the series, we will learn how to check our RESTful API using a REST Client. With this, we come to the end of this tutorial.
Slide 7: Summary RESTful API Implementation of RESTful API using Views	Let us summarize. In this tutorial, we have learnt about- RESTful API and Implementation of RESTful API using Views
Slide 8: Assignment Implement the RESTful API on the Article content type	As an assignment Implement the RESTful API on the Article content type
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