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joplin/ReactNativeClient/lib/nested-utils.js
Vaidotas Šimkus e11e57f1d8
All: Added support for hierarchical/nested tags (#2572)
The implementation uses / symbol as a nesting separator. I.e. tag/subtag is a nested tag, where tag is the parent tag and subtag is its child. Creating a tag named tag/subtag/subsubtag creates three tags, one for each level. The tags are associated using parent_id field.

In the app, viewing notes with a tag will also show all notes that are associated with any of the tag's descendant tags (same for the note count). Deleting a tag will also delete all its descendant tags.

In the desktop app the tags are shown nested just like the notebooks.
2020-07-12 18:09:07 +01:00

23 lines
402 B
JavaScript

/* eslint no-useless-escape: 0*/
function nestedPath(items, itemId) {
const idToItem = {};
for (let i = 0; i < items.length; i++) {
idToItem[items[i].id] = items[i];
}
const path = [];
while (itemId) {
const item = idToItem[itemId];
if (!item) break; // Shouldn't happen
path.push(item);
itemId = item.parent_id;
}
path.reverse();
return path;
}
module.exports = { nestedPath };