How to use Zoho WorkDrive images in Zoho Writer's merge fields
Overview
When performing a mail merge in Zoho Writer, image fields must be provided with a public URL to properly display the image. If your images are stored in Zoho WorkDrive, you can generate a public download URL and use it for your image fields.
This article explains multiple ways to achieve this using the WorkDrive UI, WorkDrive API, or via a Deluge script.
Method 1: Using the WorkDrive User Interface (UI)
1. Navigate to the desired image in your WorkDrive folder.
2. Click on the More option (three dots) and select New Download Link.
3. In the pop-up window, create the download link and copy it.
4. Append ?directDownload=True to the copied link.
Example:
Use the final link as the input value for your image field in Zoho Writer.
Method 2: Using WorkDrive API
You can programmatically create a download link using the following API:
Endpoint: POST <workdrive domain>/api/v1/links
Required Scope: WorkDrive.files.CREATE
Sample Payload:
{
"data": {
"attributes": {
"resource_id": "g576y886ac79ac5************",
"link_name": "sample_link",
"link_type": "download",
"request_user_data": false,
"allow_download": true,
"expiration_date": "2021-12-12",
"download_link": {
"download_limit": "5"
}
},
"type": "links"
}
}
Sample Response:
Look for the 'download_url' key in the response.
Append ?directDownload=True to the download_url before using it in Writer.
Method 3: Using Deluge Script
Step 1: Upload Image to WorkDrive
Use the below script and upload the image to WorkDrive.
workdrive_folder_id = "g576*****";
responseData = zoho.workdrive.uploadFile(image1,workdrive_folder_id,image1.getFileName(),true,"<connection_name>");
workdrive_resourceid = "";
if(responseData != null){
responseList = responseData.get("data");
responseData = responseList.get(0);
workdrive_resourceid = responseData.get("attributes").get("resource_id");
}
Step 2: Create Download Link
Use the below script to create an external download link for the image from WorkDrive.
attribute = Map();
attribute.put("resource_id", workdrive_resourceid);
attribute.put("allow_download", true);
attribute.put("request_user_data", false);
attribute.put("link_name", "sample_link");
attribute.put("expiration_date", "2021-12-12");
attributeMap = Map();
attributeMap.put("attributes", attribute);
attributeMap.put("type", "links");
param = Map();
param.put("data", attributeMap);
paramString = param.toString();
mp = Map();
mp.put("Accept", "application/vnd.api+json");
makeExternalLink = invokeurl
[
url :"https://workdrive.zoho.com/api/v1/links"
type :POST
parameters:paramString
headers:mp
connection:"<connection_name>"
];
linkobj = makeExternalLink.get("data");
downloadlink = "";
if(linkobj != null)
{
constructURl = linkobj.get("attributes").get("download_url");
downloadlink = constructURl + "?directDownload=True";
}
Sample Download Link:
Use this final download link as the value for the image field in your Writer template.
Summary
Regardless of the method used—UI, API, or Deluge—the key requirement is:
- You must obtain a public download URL from Zoho WorkDrive.
- Append ?directDownload=True to the end of the URL.
This ensures that the link works correctly as the image field value during your Zoho Writer merge process.
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