Open
Description
While we don't have support for detecting duplicated series automatically, let's show similar series to user. In this case user will have a chance to stop early and don't submit a duplicated series.
Let's show a list of (at most 3) similar series above the submit button. We can use AJAX for that and re-calculate/update a list when user changes any fields.
In order to suggest anything we should (at least) have the following information:
- category
- quantity
Other fields (country, year, catalog numbers) are useful but should be optional.