WeChat.WebPage.sign_card

You're seeing just the function sign_card, go back to WeChat.WebPage module for more information.
Link to this function

sign_card(list)

Specs

sign_card(list :: [String.t()]) :: map()

卡券签名 - 官方文档

Link to this function

sign_card(wx_card_ticket, card_id)

Specs

sign_card(wx_card_ticket(), WeChat.Card.card_id()) :: map()

See sign_card/1

Link to this function

sign_card(wx_card_ticket, card_id, openid)

Specs

See sign_card/1