How can I filter an index view using REST?

I have a custom content type called ‘Regions’, which simply has a title field. Example values are: Asia, North America, Ocenia, etc.

I’ve set up a view for this list and a REST export for it, so /regions gives me a simple list:

[{"title":"Asia"},{"title":"North America"},{"title":"South America"},{"title":"Ocenia"}]

I want to filter the results, so I added a contextual filter on the title field, making /regions/Asia show only Asia:

[{"title":"Asia"}]

How do I implement a wildcard search? Something like as should match Asia and amer should match both North America and South America. I’d like to do something like /regions?title=Asia

I referred to this guide on setting up contextual filters, but the following doesn’t seem to work for me:

This query works as a SQL LIKE statement so you can send just a piece of the name and Views will try to find all records LIKE that argument, example, I have a brand called Land Rover but if I just send Land as an argument it will work http://dev-cars-api.pantheonsite.io/api/cars/Land

The URL in the quote is no longer online, so I can’t check if it actually works. For me, only entering a full, matching item title works. I can’t even specify a title with spaces, so /regions/North+America is also blank for me.

My Drupal version is 8.4, running on PHP 7.1.

This article was republished from its original source.
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How can I filter an index view using REST?

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