Get Started with Ruby Utils Library

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

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_mark(mark_type, text)
        renderString = super(mark_type, text)
        case mark_type
        when 'bold'
             renderString = "<b>#{text}</b>"
        end
        renderString
    end

    def render_node(node_type, node, inner_html)
        renderString = super(node_type, node, inner_html)
        case node_type
        when 'p'
              renderString = "<p class='class-id'>#{inner_html}</p>"
        when 'h1'
               renderString = "<h1 class='class-id'>#{inner_html}</h1>"
         end
        renderString
    end

    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.get_attribute_value("href")}'>#{metadata.text}</a>"
        when 'display'
            return "<img src='#{metadata.get_attribute_value("src")}' alt='#{metadata.alt}' />"
        when download
            return "<a href='#{metadata.get_attribute_value("href")}'>#{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:

Render HTML RTE Embedded Object

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.rich_text_content, 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.rich_text_content, CustomLOption.new(@entry))

Render JSON RTE Contents

To get a single entry, you need to provide the stack API key, environment name, delivery token, content type and entry UID. Then, use the Contentstack.json_to_html 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.json_to_html(@entry.rich_text_content, ContentstackUtils::Model::Option.new(@entry))

Fetch Embedded Item(s) from Multiple Entries

Render HTML RTE Embedded Object

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.rich_text_content, ContentstackUtils::Model::Option.new(@entry))
end

Render JSON RTE Contents

To get embedded items from multiple entries, you need to provide the stack API key, environment name, delivery token, content type UID. Then, use the Contentstack.json_to_html function as shown below:

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.json_to_html(@entry.rich_text_content, ContentstackUtils::Model::Option.new(@entry))