How can I add a link to list attachments using Json formatting

Question

Is it possible to have a link to attachments using json formatting?

I want my users to be able to click a link to go the the attachment file from a view and not have to edit or click on the form to see the attachments.

Answer 1

Unfortunately, the attachments field is not directly accessible in JSON formatting.

You can only check if attachments are available or not for the list item using:

"txtContent": "=if([$Attachments] == '0', 'no attachment', 'item has attachment')"

Source: Conditional formatting if list item has attachment

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However, if you have the filename stored in one of the columns in list, you can build a link to the attachment using JSON formatting like:

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "button",
  "style": {
    "border-radius": "5px",
    "margin": "5px 0px",
    "padding": "0px",
    "visibility": "=if([$Attachments] == '0', 'hidden', 'visible')"
  },
  "attributes": {
    "class": "ms-bgColor-themePrimary"
  },
  "children": [
    {
      "elmType": "a",
      "txtContent": "Attachments",
      "style": {
        "text-decoration": "none",
        "padding": "10px 0px",
        "width": "100%"
      },
      "attributes": {
        "href": "= @currentWeb + '/Lists/ListName/Attachments/' + [$ID] + '/' + [$FileName] + '?web=1'",
        "target": "_blank",
        "class": "ms-fontColor-white"
      }
    }
  ]
}

Output:

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