Struct Card 

pub struct Card { /* private fields */ }

Card block representation.

Fields and Validations

For more details, see the official documentation.

Field	Type	Required	Validation
block_id	String	No	Maximum 255 characters
hero_image	Image	No	N/A
icon	Image	No	N/A
title	TextContent	No	Maximum 150 characters
subtitle	TextContent	No	Maximum 150 characters
body	TextContent	No	Maximum 200 characters
actions	Vec<Button>	No	N/A

Validation Across Fields

• At least one of hero_image, title, actions, or body is required.

Example

use slack_messaging::{plain_text, mrkdwn};
use slack_messaging::blocks::Card;
use slack_messaging::blocks::elements::{Button, Image};

let card = Card::builder()
    .icon(
        Image::builder()
            .image_url("https://picsum.photos/36/36")
            .alt_text("Icon")
            .build()?
    )
    .title(mrkdwn!("Lumon Industries")?)
    .subtitle(mrkdwn!("Committed to work-life balance")?)
    .hero_image(
        Image::builder()
            .image_url("https://picsum.photos/400/300")
            .alt_text("Sample hero image")
            .build()?
    )
    .body(mrkdwn!("Please enjoy each card equally.")?)
    .action(
        Button::builder()
            .text(plain_text!("Action Button")?)
            .action_id("button_action")
            .build()?
    )
    .build()?;

let expected = serde_json::json!({
    "type": "card",
    "icon": {
        "type": "image",
        "image_url": "https://picsum.photos/36/36",
        "alt_text": "Icon"
    },
    "title": {
        "type": "mrkdwn",
        "text": "Lumon Industries"
    },
    "subtitle": {
        "type": "mrkdwn",
        "text": "Committed to work-life balance"
    },
    "hero_image": {
        "type": "image",
        "image_url": "https://picsum.photos/400/300",
        "alt_text": "Sample hero image"
    },
    "body": {
        "type": "mrkdwn",
        "text": "Please enjoy each card equally."
    },
    "actions": [
        {
            "type": "button",
            "text": {
                "type": "plain_text",
                "text": "Action Button"
            },
            "action_id": "button_action"
        }
    ]
});

let json = serde_json::to_value(card).unwrap();

assert_eq!(json, expected);

Implementations

impl Card

pub fn builder() -> CardBuilder

constract CardBuilder object.

Trait Implementations

impl Clone for Card

fn clone(&self) -> Card

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Card

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Card> for Block

fn from(value: Card) -> Self

Converts to this type from the input type.

impl PartialEq for Card

fn eq(&self, other: &Card) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Card

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Card