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Documents often require updating — fields need to be incremented, modified, overwritten, or deleted. In this section we'll discuss situations where you:
- know the ID of the doc in question and want to update only that particular document
- want to update a group of documents that have something in common (i.e. match a query)
Use Case 1: Single-doc Updates
I'm tracking visits to my site based on the slug. A sample entry in my
site_visits index: POST site_visits/_doc/home_id
{
"slug": "/home",
"visits": 0,
"tags": ["landing", "ab_test_100"],
"unneeded_attribute": "old"
}How do I
- add a
modified_atfield and set it to now
- increment the
visitscount
- remove the
ab_test_100tag
- and delete the
unneededattribute?
Approach to #1
For adding new fields such as
modified_at, you may be tempted to repeat the POST call from above with only the new field being present:POST site_visits/_doc/home_id
{
"modified_at": "2020-12-05T14:11:41.634Z"
}