I was recently posting an issue in the Developer Forum for Trello and found a post I could answer fairly quickly since I knew the answer already. Thought I would share it here on my blog as well.
The question was along the lines of:
How do I show my board button only to members of the board who have paid for it? Or how do I block guests from getting the board button?
Here is the code:
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| /// <reference path="trello.d.js" /> | |
| /** @type {TrelloPowerUp} */ | |
| const tpu = window.TrelloPowerUp; | |
| tpu.initialize({ | |
| 'board-buttons': | |
| /** | |
| * Returns the board button | |
| * @param {TrelloObject} t | |
| * @returns {TrelloBoardButtonOption[]} | |
| */ | |
| async (t) => { | |
| /** @type {TrelloMemberObject} */ | |
| const member = await t.member("id"); | |
| /** @type {TrelloBoard} */ | |
| const board = await t.board("memberships"); | |
| /** @type {TrelloMembership} */ | |
| const membership = board.memberships.find(o=>o.idMember === member.id); | |
| if(!membership || membership.memberType === "observer") { | |
| t.alert({ | |
| message: "Sorry you are only a guest on this board!", | |
| duration: 1, | |
| }); | |
| return []; // no board button for you | |
| } | |
| /** @type {TrelloBoardButtonOption} */ | |
| const button = { | |
| text: "hello", | |
| icon: `data:image/png;base64,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`, // for card front badges only | |
| condition: "always", | |
| callback: (tt) => { | |
| tt.alert({ | |
| message: "You are all paid up!", | |
| duration: 1, | |
| }) | |
| } | |
| }; | |
| // return the button | |
| return [button]; | |
| } | |
| }); |
Happy coding!