wekan/models/checklistItems.js

ChecklistItems = new Mongo.Collection('checklistItems');

ChecklistItems.attachSchema(new SimpleSchema({
  title: {
    type: String,
  },
  sort: {
    type: Number,
    decimal: true,
  },
  isFinished: {
    type: Boolean,
    defaultValue: false,
  },
  checklistId: {
    type: String,
  },
  cardId: {
    type: String,
  },
}));

ChecklistItems.allow({
  insert(userId, doc) {
    return allowIsBoardMemberByCard(userId, Cards.findOne(doc.cardId));
  },
  update(userId, doc) {
    return allowIsBoardMemberByCard(userId, Cards.findOne(doc.cardId));
  },
  remove(userId, doc) {
    return allowIsBoardMemberByCard(userId, Cards.findOne(doc.cardId));
  },
  fetch: ['userId', 'cardId'],
});

ChecklistItems.before.insert((userId, doc) => {
  if (!doc.userId) {
    doc.userId = userId;
  }
});

// Mutations
ChecklistItems.mutations({
  setTitle(title) {
    return { $set: { title } };
  },
  toggleItem() {
    return { $set: { isFinished: !this.isFinished } };
  },
  move(checklistId, sortIndex) {
    const cardId = Checklists.findOne(checklistId).cardId;
    const mutatedFields = {
      cardId,
      checklistId,
      sort: sortIndex,
    };

    return {$set: mutatedFields};
  },
});

// Activities helper
function itemCreation(userId, doc) {
  const card = Cards.findOne(doc.cardId);
  const boardId = card.boardId;
  Activities.insert({
    userId,
    activityType: 'addChecklistItem',
    cardId: doc.cardId,
    boardId,
    checklistId: doc.checklistId,
    checklistItemId: doc._id,
  });
}

function itemRemover(userId, doc) {
  Activities.remove({
    checklistItemId: doc._id,
  });
}

// Activities
if (Meteor.isServer) {
  Meteor.startup(() => {
    ChecklistItems._collection._ensureIndex({ checklistId: 1 });
  });

  ChecklistItems.after.insert((userId, doc) => {
    itemCreation(userId, doc);
  });

  ChecklistItems.after.remove((userId, doc) => {
    itemRemover(userId, doc);
  });
}