How do I find documents that match a tag list?
I have a list of blog posts similar to below
[
{
title: "Post #1",
tags: ["foo", "bar"]
},
{
title: "Post #2",
tags: ["bar", "baz"]
},
{
title: "Post #3",
tags: []
},
{
title: "Post #4"
},
{
title: "Post #5",
tags: ["qux"]
},
...
]
How can I use the standard /posts
GET method for searching:
- all posts matching the tag
foo
? - all messages matching the
foo
AND tagsbar
? - all posts that have no tags
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1 answer
You can use the standard GTS method for publishing:
-
all messages that match the foo tag?
/ posts? filter = {"where": {"tags": {"inq": ["foo"]}}}
-
all posts that match foo AND bar tags?
/ posts? filter = {"where": {"and": [{"tags": {"inq": ["foo"]}}, {"tags": {"inq": ["bar"]}}]} }
-
all posts that have no tags?
/ posts? filter = {"where": {"tags": []}}
Compared to db queries, Loopback is built on top of Express and supports most queries as it uses its own database drivers to create queries.
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