Derive Macro Modal 

#[derive(Modal)]
{
    // Attributes available to this derive:
    #[modal]
    #[input]
    #[select]
    #[user_select]
    #[role_select]
    #[mentionable_select]
    #[channel_select]
    #[radio]
    #[checkboxes]
    #[checkbox]
    #[file_upload]
}

Available on crate feature macros only.

A form shown as a modal. See Components and modals. A form shown as a modal: each named field is one input inside a Label.

#[derive(Modal)]
#[modal(title = "Report a bug", text = "Thanks for helping!")]
struct BugReport {
    #[input(max_len = 100)]
    summary: String,
    #[input(paragraph, label = "What happened?")]
    details: Option<String>,
    #[radio]
    severity: Severity,               // a #[derive(Choice)] enum supplies the options
    #[checkboxes(option("Windows", "win"), option("macOS", "mac"), option("Linux", "linux"))]
    platforms: Vec<String>,
    #[file_upload(max = 3, file_types("image"))]
    screenshots: Vec<Attachment>,
    #[checkbox(label = "Contact me")]
    contact: bool,
}

The attribute picks the input (default #[input]): input, select, user_select, role_select, mentionable_select, channel_select, radio, checkboxes, checkbox, file_upload. All take label (defaults to the field name), description, and id (defaults to the field name); then

• input: paragraph, min_len, max_len, placeholder, value
• select: placeholder, min, max, option("Label", "value")…
• user_select, role_select, mentionable_select: placeholder, min, max
• channel_select: those and channel_types(...)
• radio: option(...)…; checkboxes: min, max, option(...)…
• checkbox: default; file_upload: min, max, file_types("image", ".pdf")

Without option(...), a #[derive(Choice)] field type supplies the options. The type decides required-ness (Option and Vec are optional, Vec allows several selections) and how the value is read: String, bool, Snowflake, User, Role, PartialChannel, Attachment, or a Choice enum, each also in Option or Vec; a mismatch with the input (a bool text input, a Vec radio group) fails to compile. On the struct: #[modal(title = "...", text = "markdown")], text repeatable; at most 5 fields and texts.