Building extensions #5: Creating custom connections for extensions

Building extensions #5: Creating custom connections for extensions

In our previous post, we discussed the significance of connections, identified their types, developed a predefined connection, and demonstrated how it can be integrated with Zoho Books using an example. In this post, we'll walk through the process of creating a custom connection using an example.

Custom connections facilitate the integration of applications with Zoho Books by aiding in configuring the required application's connection manually by providing application-specific details. Let's go over the steps involved in configuring custom connections in detail using a use case scenario.

Use case

Let's say an organization uses Zoho Books to manage its financial operations. To improve sales for the organization, one must contact and communicate with multiple clients, as well as check in with vendors on a regular basis to remain up to date on new products on the market, take demos, and assess whether the products need to be brought into the organization.

In these cases, it is best to schedule appointments with clients and vendors in order to conduct business in an organized manner. This can be easily performed by integrating an appointment scheduling software so appointments can be scheduled with a click.

For our demo purpose, let's consider Zoho Bookings as the appointment scheduling software. Since it is not available under the default list of services in predefined connections, let's create a custom connection to achieve this.

Steps to create a custom connection
  • Go to Sigma and access your workspace.
  • Enter the developer portal of the Zoho Books extension you're creating a connection for.
  • Navigate to the Build section and click Connections.
   
  • Click New Connection to create a new connection.
NotesNote: Alternatively, you can use the View All option under a connection type to see all the services under that particular connection type and begin creating connections.
     
  • Choose Custom Services and click Create Service.
   
  • Provide the details of the service.
➤ Enter a name for the service, and the service link name will be immediately filled in.
➤ Choose the authentication type that corresponds to the authentication mechanism supported by the service for which you are building the connection. These details will be available as part of the service's API documentation. For our example, we'll use OAuth2, because Zoho Bookings supports it as an authentication mechanism.         
  
➤ The remaining fields to be configured for the service differ based on the authentication type used. In our case, the parameter type is Header, and the grant type is Authorization Code.
   
➤ Please refer to the table below for the values that need to be configured in the remaining fields.
Note: Register the service in the Zoho Developer API console to get the client credentials.
  • Finally, click the Create Service button.
  
  • The service is created successfully. Click Create Connection to create a connection for this service.
  • Provide the connection details, select the scope, and click Create and Connect.
 
  • Proceed with the flow to accept the scopes and authorize the connection.
 

The connection is now authorized, and you'll be directed to the connection details page. This page will also contain sample code in both Deluge and JSON formats that can be used to utilize this connection as part of your extension components. Depending on which component you want to invoke the connection in, you can use the appropriate sample code format.

Additionally, a predefined connection for Zoho Books is created to perform operations on Zoho Books data to implement our use case. Get more information on predefined connections in our previous post.

Now, in accordance with our use case, let's create a custom button that includes this connection to schedule appointments (in Zoho Bookings) with clients and vendors using Zoho Bookings with a single click (from Zoho Books).
We require two custom fields for our logic, one for setting the meeting start time with the client or vendor, and the other to display the Bookings appointment calendar link once the meeting is scheduled.
  • Create custom fields for the Customers and Vendors module by selecting Preferences > Customers and Vendors > Field Customization > New Custom Field.
 
  • Next, create a custom button and include the logic to schedule an appointment.
  • Create a custom button for the Customers and Vendors module by selecting Preferences > Customers and Vendors > Custom Buttons > New.
InfoBook meeting custom button function Deluge code - Please find code snippet as an attachment in the post
  • In the above code, the Get Contacts API of Zoho Books is invoked through the InvokeURL method using the predefined connection to get the contact/customer details for whom the appointment has to be scheduled in Zoho Bookings. Refer to this post to get complete details on the parameters required to call the InvokeURL method.
  • From the API response, the required details are fetched from which the start time (custom field data) is formatted to the way required by the Zoho Bookings API.
  • Next, the Zoho Bookings API to get the service ID and staff ID are invoked consecutively through the InvokeURL method using the custom connection created.
  • The Book appointment API is used to schedule the appointment using the service ID, the staff ID obtained from the Zoho Bookings API, and customer details obtained previously via the Zoho Books API.
  • Finally, using the update contact Zoho Books API, the Zoho Bookings calendar URL is updated in the custom field created to display the calendar booking URL.
We've now completed the extension setup for our use case.

After testing and publishing the extension, as per our use case, you can book a meeting for a Zoho Books customer through Zoho Bookings and have your Zoho Bookings calendar reflected inside Zoho Books as well.

z
This is an example demonstration of the benefits of using a custom connection in a Zoho Books extension. This is a versatile use case that may even be used to schedule an internal meeting with your Zoho Books teammates who are working on a project. Similarly, this use case can be enhanced and implemented based on your needs.

We hope you found this information useful. Keep following us for more tips.

SEE ALSO

    • Recent Topics

    • Is It Possible to Hide Menu Option from Main Navigation?

      Is it possible to hide a menu option, e.g. Admin, from the Main Navigation based on some criteria, e.g. login = zoho.adminuser

    • Unleash the power of detail, with Table View.

      What use is context that's not available where you need it? With this in mind, we bring you the Table View. This feature will add more power to the way you organize and work through your ticket load. Table View comes in handy when you want more control over the ticket information you see. This is a nifty tool for users who find themselves limited in terms of the level of information that is being offered in the Classic View and Compact View. With an upper limit of 15 columns, agents can glean most

    • Kaizen #126 - Circuits in Zoho CRM - Part 1

      Hello everyone! Welcome back to another week of Kaizen! Today, we will discuss an exciting topic—Circuits in Zoho CRM. For starters, we will discuss what Circuits are, how beneficial they are for businesses, different views of a Circuit, and the different

    • 'Statement of Accounts does not exist' error received, when creating PO using api in Zoho Inventory

      Here is request json -- JSONString = { "date": "2019-09-24", "purchaseorder_number": "PO-6-1", "delivery_date": null, "delivery_org_address_id": 36221200000056XXX, "vendor_id": 362212000000564XXX, "attention": "Testing", "line_items": [{ "unit": "Pieces", "account_id": 36221200000003XXX, "quantity": 1, "item_id": 362212000000049XXX, "tax_type": "", "tax_name": "", "name": "One HD", "purchase_rate": 85, "tax_percentage": 0, "item_total": 85.00, "tax_id": "", "warehouse_id": 362212000000564XXX }] }

    • Multiple clients in one project

      Hi team, What is the possibility to have more than one client to be linked for one project in the Zoho Books? Our business model is to have a project, and this project have expenses/bills, as well, we issue invoices for this same project to several customers.

    • Support Bots and Automations in External Channels

      Hello Zoho Cliq Team, How are you? We actively use Zoho Cliq for collaboration, including with our external developers. For this purpose, external channels are a key tool since they work seamlessly within the same interface as all of our other channels

    • Workdrive on Android - Gallery Photo Backups

      Hello, Is there any way of backing up the photos on my android phone directly to a specific folder on Workdrive? Assuming i have the workdrive app installed on the phone in question. Emma

    • Need more details on API Usage Dashboard

      Hi Team, We have implemented Zoho Expense for a client and has done some integrations with well known third party ERP via api. Recently we have noticed a huge spike in the API consumption. But we couldn't get the root cause for the same. I accept there

    • Edit item custom fields

      Getting this error : Transactions have been created with the custom field. Hence it cannot be deleted. Not trying to delete it, just trying to change which modules to show in or to not show at all in transactions !

    • Rendering PDF to view on page

      My company upload lots of PDF files onto Zoho. But every time we open it, it downloads the file instead of viewing it on the web page. Does Zoho allow uploaded PDF files to be rendered to view on web page yet? I've been trying to use <embed> or <object> but it cannot be loaded.  (similar thread: https://help.zoho.com/portal/community/topic/how-to-open-a-pdf-file-of-a-view-in-preview-mode)

    • Dynamically Fetching Lookup Field Display Value

      I have an audit trail form, Audit_Changes, that tracks old vs new values across different forms. For lookup fields, the old/new value is the ID, but I also need the display value. What's a best practice for dynamically fetching the display value of the

    • Workdrive and ChatGPT Team Synced Connectors

      Hi, we want to be able to integrate Zoho Workdrive with OpenAI’s ChatGPT Team plan. Google Drive and OneDrive both offer this, zoho please catch up asap. We dont want to have to put our company files in google drive, we want to allow chatgpt Team edition

    • Subform Disabled Fields Should Remain Disabled on Edit/View

      Currently, when we disable a subform field using on user input or on add new row, it works perfectly during the initial data entry. However, when the record is saved and reopened for viewing or editing, these disabled fields become editable again. This

    • Ability to Create New Items When Zoho Trident is Minimized via tray or taskbar icon

      Allow users to create new items (emails, calendar events, tasks, etc.) directly from the system tray icon or by right clicking the task bar icon, even when the window is minimized or not actively running in the foreground. This enables quick access to

    • Bug Report and Suggestions for Improvement in Zoho Applications

      Hi Zoho Team, I’d like to report a few bugs and improvement suggestions I’ve noticed while using Zoho products: Zoho Cliq Video Call: The camera sometimes turns off automatically during video calls. This seems to be a bug — please check and fix it. Zoho

    • I can not see Undeliverable emails from my Mass Email Leads activity in CRM

      I am sending email templates and I can not see the Undeliverables? I only receive the "Out of Office" replies and any manual replies from the lead. Can you please let me know where the Undeliverable emails are sent so I can use the information to clean up the database?

    • Select Zoho Contacts as Meeting Participants in Zoho Cliq

      Hello Zoho Cliq Team, We hope you're doing well. We would like to request an enhancement to the meeting scheduling functionality in Zoho Cliq. Current Limitation: When scheduling a meeting in Zoho Cliq, participants can only be selected from: Organization

    • Ability to Select External Users from Participants List When Scheduling Meetings

      Hello Zoho Cliq Team, We hope you're doing well. We would like to request an enhancement to the meeting scheduling experience in Zoho Cliq. Current Limitation when scheduling a meeting in Zoho Cliq: External users can be selected from the list only under

    • Kaizen #212 - Map Dependency Fields in Zoho CRM using APIs

      Hi Everyone!! Welcome back to another week of Kaizen series! Over the past few weeks, we have been addressing your questions and feedback shared through our Kaizen 200th feedback form. Thank you for your continued engagement and thoughtful queries. We

    • Outdated state in mexico

      Hello Zoho team, the drop down to add the state for customers, when they introduce their state in mexico has a city named “Distrito Federal” that name changed many years ago to “ciudad de mexico”. could you please update this so my clients can find the

    • Is anyone using Zoho Flow with airtable?

      I need to build a flow that collects data from airtable and uses some of that data to create folders and files in google drive. I have fully function version of this in zapier and want to migrate to zoho. I am trying to perform a very basic fetch from

    • SOME FEATURES ARE NOT IN THE ZOHO SHEET IN COMPARISION TO ZOHO SHEET

      TO ZOHO sir/maam with due to respect i want to say that i am using ZOHO tool which is spreadsheet i want to say that some features are not there in zoho sheet as comparison to MS EXCEL like advance filter and other Features which should be there in ZOHO

    • AI in Zoho Workplace: A Sneak Peek into What’s Coming!

      Hello everyone, We’re super excited to share something we’ve been working on and we want you to be part of it! You may have seen our announcement blog post introducing a major evolution in how AI works within Zoho Workplace. Want to be among the first

    • Display Client Name in Zoho Creator Client Portal Dashboard

      Hello Zoho Creator Team, We hope you are doing well. Zoho Creator recently introduced the option to set a client’s display name in the Client Portal settings, which is very helpful for providing a personalized portal experience. However, there is currently

    • Meet Canvas' Grid component: Your easiest way to build responsive record templates

      Visual design can be exciting—until you're knee-deep in the details. Whether it's aligning text boxes to prevent overlaps, fixing negative space, or simply making sure the right data stands out, just ironing out inconsistencies takes a lot of moving parts.

    • Best way to share/download presentation files in Zoho without losing formatting?

      Hello Zoho Community, I often work with PPT/PDF files in Zoho Docs and share them with colleagues. While PDFs usually give a direct download option, I’ve noticed that PPT/PPTX files sometimes only open in the viewer without a clear download link. Is there

    • Workflow Failure - Notifications

      Good afternoon, I have just experienced an error whereby a Workflow failed, for a reason currently unknown. The problem is that one of my users had to flag this manually (thankfully he's very thorough) and this otherwise would have flown under the radar.

    • Introducing Bin Locations In Zoho Inventory

      Hello users, We are excited to let you know that your wait for the Bin Locations feature has now come to an end! Yes, you heard us right! We are here to introduce the much-awaited Bin Locations now in Zoho Inventory. But before we dive into the feature

    • Error "Invalid client task found corresponding properties" only when triggered from workflow ?

      Hi All, I am facing an error message I never encountered previously: Error in executing On Add - On Load script Error in executing thisapp.get_all_projects_api_call function. Line:(2) Error in executing thisapp.getAccessTokenFromRefreshToken function.

    • How to interpret Campaign report statistics - definitions/explanation

      I am trying to make sure I understand the Campaign report correctly Do you have a list of definitions for: Delivered - it has reached the recipient's inbox Campaign reach - is this the number that have opened the campaign email? Unique Opens Clicks/Open

    • Subforms in Stateless Forms

      Stateless Forms are very useful, but we can't build complex data entry pages without Subforms. Can this be implemented? This would make Stateless Forms truly powerful.

    • Feature request - pin or flag note

      Hi, It would be great if you could either pin or flag one or more notes so that they remain visible when there are a bunch of notes and some get hidden in the list. Sometimes you are looking for a particular name that gets lost in a bunch of less important

    • Schedule a Call by Date and Time when a specific lead status is selected

      Hi Wanting to create a workflow where a call can be scheduled by date & time when a specific lead status is selected. Can only currently set the date by Due Date - Trigger Date - Plus 'x' day(s) Thanks

    • Zoho CRM's Copy Customization functionality now works across DCs, for customized accounts, and more

      Availability This feature is available in Standard, Professional, Enterprise, and Ultimate editions. These changes have been rolled out to all users in all DCs. For more information, please refer to these help documents: Overview | Instructions Hello

    • How can I bold text on Zoho Forms submit buttons?

      In the old theme builder, I could bold the text on a form's submit button. With the new theme builder, I can only change the text of the header or fields in the form, and not the button itself.

    • 5名限定 課題解決型ワークショップイベント Zoho ワークアウト開催のお知らせ (10/31)

      ユーザーの皆さま、こんにちは。Zoho ユーザーコミュニティチームの中野です。 10月開催のZoho ワークアウトについてお知らせします。 今回はZoomにて、オンライン開催します。 参加登録はこちら（無料）：https://us02web.zoom.us/meeting/register/BGYTysOnSqa9LA9eY2IKww ━━━━━━━━━━━━━━━━━━━━━━━━ Zoho ワークアウトとは？ Zoho ユーザー同士で交流しながら、サービスに関する疑問や不明点の解消を目的とした

    • Hiding Pre-defined Views

      You can enhance Zoho with custom views - but you cannot hide the pre-defined views. Most users focus on 4 or 5 views. Right now for EVERY user EVERY time they want to move to one of their 4 or 5 views - they have to scroll down past a long list of pre-defined views - we don't use ANY of the pre-defined views. Adding the feature to allow a predefined view to be hidden completely or only visible to certain users would be a big improvement in usability for Zoho CRM. This feature is already available

    • Rich-text fields in Zoho CRM

      Hello everyone, We're thrilled to announce an important enhancement that will significantly enhance the readability and formatting capabilities of your information: rich text options for multi-line fields. With this update, you can now enjoy a more versatile

    • [Integration Edition] Deluge Learning Series – Third-Party Integrations with Deluge | October 2025

      We’re excited to continue this three-month edition of the Deluge Learning Series: Session 1 – Integrating Zoho Apps with Deluge Using Built-In Integration Tasks Session 2 – Integrating Zoho Apps with Deluge Using invokeURL and invokeAPI Session 3 – Third-Party

    • Feature Request: Tag, Search, and Report on Individual Private Comments

      Zoho Desk Team, First, I want to say that we are extensive users of Zoho Desk and it is a core part of our support operations. We rely heavily on the private comments feature for internal communication, knowledge sharing, and maintaining a clear history

    • Next Page