New Label Added To Card (Instant) from Trello API

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New Label Added To Card (Instant) from the Trello API

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Getting Started#

Trigger a workflow on New Label Added To Card (Instant) with Trello API. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

Configure the New Label Added To Card (Instant) trigger
1. Connect your Trello account
2. Select a Board
3. Optional- Select one or more Lists
4. Optional- Select one or more Cards
Add steps to connect to 1000+ APIs using code and no-code building blocks
Deploy the workflow
Send a test event to validate your setup
Turn on the trigger

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Details#

This is a pre-built, source-available component from Pipedream's GitHub repo. The component is developed by Pipedream and the community, and verified and maintained by Pipedream.

To contribute an update to an existing component or create a new component, create a PR on GitHub. If you're new to Pipedream component development, you can start with quickstarts for trigger span and action development, and then review the component API reference.

New Label Added To Card (Instant) on Trello

Description:Emit new event for each label added to a card.

Version:0.0.10

Key:trello-new-label-added-to-card

View on GitHub

Code#

import common from "../common/common-webhook.mjs";

export default {
  ...common,
  key: "trello-new-label-added-to-card",
  name: "New Label Added To Card (Instant)",
  description: "Emit new event for each label added to a card.",
  version: "0.0.10",
  type: "source",
  props: {
    ...common.props,
    board: {
      propDefinition: [
        common.props.trello,
        "board",
      ],
    },
    lists: {
      propDefinition: [
        common.props.trello,
        "lists",
        (c) => ({
          board: c.board,
        }),
      ],
    },
    cards: {
      propDefinition: [
        common.props.trello,
        "cards",
        (c) => ({
          board: c.board,
        }),
      ],
    },
  },
  hooks: {
    ...common.hooks,
    async deploy() {
      if (this.cards && this.cards.length > 0) {
        await this.emitLabelsFromCardIds(this.cards);
        return;
      }
      if (this.lists && this.lists.length > 0) {
        for (const listId of this.lists) {
          const cards = await this.trello.getCardsInList(listId);
          await this.emitLabelsFromCards(cards);
        }
        return;
      }
      const cards = await this.trello.getCards(this.board);
      await this.emitLabelsFromCards(cards);
    },
  },
  methods: {
    ...common.methods,
    async emitLabelsFromCards(cards) {
      for (const card of cards) {
        const labelIds = card.idLabels;
        for (const labelId of labelIds) {
          const label = await this.trello.getLabel(labelId);
          let summary = label.color;
          summary += label.name
            ? ` - ${label.name}`
            : "";
          summary += `; added to ${card.name}`;
          this.$emit(card, {
            id: `${labelId}${card.id}`,
            summary,
            ts: Date.now(),
          });
        }
      }
    },
    async emitLabelsFromCardIds(cardIds) {
      const cards = [];
      for (const id of cardIds) {
        const card = await this.trello.getCard(id);
        cards.push(card);
      }
      await this.emitLabelsFromCards(cards);
    },
    _getLabelName() {
      return this.db.get("labelName");
    },
    _setLabelName(labelName) {
      this.db.set("labelName", labelName);
    },
    _getLabelColor() {
      return this.db.get("labelColor");
    },
    _setLabelColor(labelColor) {
      this.db.set("labelColor", labelColor);
    },
    isCorrectEventType(event) {
      const eventType = event.body?.action?.type;
      return eventType === "addLabelToCard";
    },
    async getResult(event) {
      const cardId = event.body?.action?.data?.card?.id;
      const labelName = event.body?.action?.data?.label?.name;
      const labelColor = event.body?.action?.data?.label?.color;
      /** Record labelName & labelColor to use in generateMeta() */
      this._setLabelName(labelName);
      this._setLabelColor(labelColor);
      return this.trello.getCard(cardId);
    },
    isRelevant({ result: card }) {
      return (
        (!this.board || this.board === card.idBoard) &&
        (!this.lists ||
          this.lists.length === 0 ||
          this.lists.includes(card.idList)) &&
        (!this.cards || this.cards.length === 0 || this.cards.includes(card.id))
      );
    },
    generateMeta({
      id, name,
    }) {
      const labelName = this._getLabelName();
      const labelColor = this._getLabelColor();
      let summary = labelColor;
      summary += labelName
        ? ` - ${labelName}`
        : "";
      summary += `; added to ${name}`;
      return {
        id,
        summary,
        ts: Date.now(),
      };
    },
    emitEvent(card, labelName, labelColor) {
      const meta = this.generateMeta(card, labelName, labelColor);
      this.$emit(card, meta);
    },
  },
};

Configuration#

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI and CLI.

Label	Prop	Type	Description
Trello	`trello`	`app`	This component uses the Trello app.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
N/A	`http`	`$.interface.http`	This component uses `$.interface.http` to generate a unique URL when the component is first instantiated. Each request to the URL will trigger the `run()` method of the component.
Board	`board`	`string`	Select a value from the drop down menu.
Lists	`lists`	`string[]`	Select a value from the drop down menu.
Cards	`cards`	`string[]`	Select a value from the drop down menu.

Authentication#

Trello uses OAuth authentication. When you connect your Trello account, Pipedream will open a popup window where you can sign into Trello and grant Pipedream permission to connect to your account. Pipedream securely stores and automatically refreshes the OAuth tokens so you can easily authenticate any Trello API.

Pipedream requests the following authorization scopes when you connect your account:

readwrite