使用Postgres和Rails进行多面过滤

Question

What is the best way to implement a faceted search/filter UI using Postgres as the backend and Ruby on Rails as the front end? Example of this is below:

Answer 1

Use ThinkingSphinx or Apache Solr - both have built-in faceting. You can roll your own (as shown in another fine answer) but my experience says that you're better off adding a real search engine and taking advantage of the faceting feature there, as well as the other search features. I use Solr for all new development, but ThinkingSphinx is generally a little easier to set up and it has new features (main one being continuous indexing) that make it a good contender.

Answer 2

I think Rails is powerful enough to implement simple form filters like shown above.

You just need to have a good data model and then it will be easy as pie.

Example:

To simplify the form creation though you can use simple_form , but it is definitely optional.

Answer 3

select
    (
        select json_object_agg(COALESCE(brand_id, 'null'), cnt)
        from (
            select brand_id, COUNT(*) as cnt
            from unnest(array_agg(brand_id)) as tmp(brand_id)
            group by brand_id
        ) ttt
    ),
    min(price) as price_min,
    max(price) as price_max
from product
WHERE is_visible = true