Contentstack Utils Ruby

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This guide will help you get started with Contentstack Ruby Utils SDK to build apps powered by Contentstack.

Prerequisites

• Ruby version 2.0 or later

SDK Installation and Setup

To set up Ruby Utils SDK, install it via gem:

gem install contentstack_utils

Note: If you are using Contentstack Ruby SDK, then “contentstack/utils” is already imported into your project.

Usage

Let’s learn how you can use Utils SDK to render embedded items.

Create Render Option:

To render embedded items on the front-end, use the render_option function, and define the UI elements you want to show in the front-end of your website, as shown in the example code below:

class  CustomLOption < ContentstackUtils::Model::Option  
	def render_option(embeddedObject, metadata)  
		case metadata.style_type  
			when  'block'  
				if metadataArray.content_type_uid === 'product'  
					return  "<div>  
						<h2 >#{embeddedObject["title"]}</h2>  
						<img src=#{embeddedObject["product_image"]["url"]} alt=#{embeddedObject["product_image"]["title"]}/>  
						<p>#{embeddedObject["price"]}</p>  
						</div>"  
				end  
			when  'inline'  
				return  "<span><b>#{embeddedObject["title"]}</b> - #{embeddedObject["description"]}</span>"  
			when link  
				return  "<a href='#{metadata.attributes["href"].value}'>#{metadata.text}</a>"  
			when  'display'  
				return  "<img src='#{metadata.attributes["src"].value}' alt='#{metadata.alt}' />"  
			when download  
				return  "<a href='#{metadata.attributes["href"].value}'>#{metadata.text}</a>"  
		end  
		super(embeddedObject, metadata)  
	end  
end

Basic Queries

Contentstack Utils SDK lets you interact with the Content Delivery APIs and retrieve embedded items from the RTE field of an entry.

Fetch Embedded Item(s) from a Single Entry:

To get an embedded item of a single entry, you need to provide the stack API key, environment name, delivery token, content type’s UID, and entry’s UID. Then, use the include_embedded_items function as shown below:

require  'contentstack'  

@stack = Contentstack::Client.new('<API_KEY>', '<ENVIRONMENT_SPECIFIC_DELIVERY_TOKEN>', '<ENVIRONMENT>')  
@entry = @stack.content_type('<CONTENT_TYPE>').entry('<ENTRY_UID>')  
.include_embedded_items  
.fetch  

@rendered_rich_text = Contentstack.render_content(@entry.rte_field_uid, ContentstackUtils::Model::Option.new(@entry))

If you want to render embedded items using the CustomOption function, you can refer to the code below:

@rendered_rich_text = Contentstack.render_content(@entry.rte_field_uid, CustomLOption.new(@entry))

Fetch Embedded Item(s) from Multiple Entries

To get embedded items from multiple entries, you need to provide the stack API key, environment name, delivery token, and content type’s UID.

require  'contentstack'  
@stack = Contentstack::Client.new('<API_KEY>', '<ENVIRONMENT_SPECIFIC_DELIVERY_TOKEN>', '<ENVIRONMENT>')  
@query = @stack.content_type('<CONTENT_TYPE>').query  
@entries = @query.where('title', 'welcome')  
.include_embedded_items  
.fetch
 
@entries.each do |entry|  
	Contentstack.render_content(@entry.rte_field_uid, ContentstackUtils::Model::Option.new(@entry))  
end

GQL Json RTE to HTML

To parse JSON RTE content from GQL response to HTML content use ContentstackUtils::GQL.json_to_html function as below:

require  'contentstack_utils'  

	result = ContentstackUtils::GQL.json_to_html(entry['single_rte'], ContentstackUtils::Model::Options.new())