Update Attachment

Description

This operation updates an attachment associated with a feature. Updating an attachment is a feature update, it requires the Update capability. The updateAttachment operation is performed on a feature service feature resource.

Since this request uploads a file, it must be a multipart request pursuant to IETF RFC1867. See the Add Item topic for more information.

This operation is available only if the layer has advertised that it has attachments. A layer has attachments if its hasAttachments property is true .

See the Limiting upload file size and file types section of Uploads to learn more about default file size and file type limitations imposed for attachments.

The result of this operation is an array of edit result objects. Each edit result indicates whether or not the edit was successful. If successful, the objectId of the result is the ID of the updated attachment. If unsuccessful, it also includes an error code and an error description.

You can provide arguments to the Update Attachment operation as defined in the following parameters table:

Request parameters

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attachmentId=58

Example usage

Update an attachment using the Update Attachment operation on a feature service feature resource. In this sample URL, the Update Attachment operation is performed on feature ID 818654 belonging to layer 0 of the 311Incidents FeatureService:

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https://services.myserver.com/lidGgNLxw9LL0SbI/ArcGIS/rest/services/SanFrancisco/311Incidents/FeatureServer/0/818654/updateAttachment

The input parameters to this operation (attachmentId and attachment ) are the ID of the attachment to be updated and a file.

JSON Response syntax

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{
  "updateAttachmentResult": {
    "objectId": <attachmentId>,
    "globalId": <globalId>,
    "success": <true | false>,
    "error": { //only if success is false
      "code": <code1>,
      "description": "<description>",
    }
  }
}

JSON Response example

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{
  "updateAttachmentResult": {
    "objectId": 58,
    "globalId": null,
    "success": true
  }
}