How can i disable the close icon on attachments?

Question

I am trying to post messages to slack https://api.slack.com/methods/chat.postMessage/test

i am adding attachment [{"pretext": "pre-hello", "text": "text-world"}]

but in slack channel UI i am seeing close icon, if i click close icon i can able to remove attachment

How can i disable close icon, so that no one can't delete attachments?

Answer 1

There is a workaround if you remove "text" node, attachments can't be deleted. So you can put "pretext" on first attachment to have same behavior.

Here you can delete attachements (Sample)

{
    "text": "Hello",
    "attachments": [
        {
            "text": "Hello World"
        },
        {
            "text": "Hello World"
        }
    ]
}

Here, you have the same message but without close icons this time (Sample)

{
    "attachments": [
        {
            "pretext": "Hello",
            "text": "Hello World"
        },
        {
            "text": "Hello World"
        }
    ]
}