I’m writing a Mattermost plugin which can receive a variable from setting page in
System Console / PLUGINS (BETA) / plugin_name
A value check will be performed when user input some parameters and click Save.
And if the value check found that there’s illegal characters, I want to popup a message immediately.
Found a similar function in the
System Console / AUTHENTICATION / password
there is a minimum password length setting can lead to an error message displayed alongside the Save button like below:
Any ideas how to show that error message?