Support relative URLs as icon_url in slash command response

[mattermod]

Integrations using slash command can overwrite the icon of the created post. This is done by setting IconURL in the slash command response. This field should report a relative URL, e.g. /plugins/github/some/path to make plugin responses independent of the siteURL. For more information about slash commands see https://docs.mattermost.com/developer/slash-commands.html#custom-slash-command.

This needs to be changed on both the webapp and mobile app.

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JIRA: https://mattermost.atlassian.net/browse/MM-21593

[rdsedmundo]

I tried to work on this, created a custom slash command and returned a response with a relative path and it worked perfectly on the webapp. I'm not sure if I understood what is the expectation here.

[hanzei]

Hi @rdsedmundo,

Thanks for you interest in this issue. :+1:

"Relative URLs" in this context refer to relativ URLs that point to a plugin like /plugins/github/some/path not generic relative URLs. Does this make it more clear?

[rdsedmundo]

I'm sorry, but no, this didn't help at all. From what I can tell I'm already able to set up a path in the format /plugins/github/some/path.

[hanzei]

Good catch, I didn't noticed this is already possible. A couple of edge cases that might not work yet are:

• plugins/github/some/path should also work
• If a subpath is used, /plugins/github/some/path should work
• If a subpath is used, plugins/github/some/path should work

Would you be interested in checking if these cases are also already fixed?

[larkox]

This should be solved.