Using match_all with filters - php

Question

I have a page which allows users to query datasets and apply filters. They can also apply filters without querying with a string. To do so I'm attempting to use match_all with filters but getting the following error
"{"error":{"root_cause":[{"type":"parsing_exception","reason":"[match_all]
malformed query, expected [END_OBJECT] but found
[FIELD_NAME]","line":1,"col":26}],"type":"parsing_exception","reason":"[match_all]
malformed query, expected [END_OBJECT] but found
[FIELD_NAME]","line":1,"col":26},"status":400}",
This is an example of the search parameters that I'm building and sending to the elastic client.
[
"type" => "events"
"index" => "events"
"body" => [
"query" => [
"match_all" => {}
"bool" => [
"filter" => [
"range" => [
"start_date.date" => [
"gte" => "01/05/2019"
"lte" => "05/2019"
"format" => "dd/MM/yyyy||MM/yyyy"
]
]
]
]
]
"from" => 0
"size" => 30
]
]
I can't seem to figure out how to use both of them. Any pointers? Thank you.

Answer 1

You will need to wrap your query in a bool query like this:
"query": {
"bool" : {
"must" : {
"match_all": {}
},
"filter": {
"range" : { /* your filter here*/ }
}
}
}
Just wrap the bool and a must query around your match_all and it should work.
I don't know the exact PHP syntax but it should be something like this:
[
"type" => "events"
"index" => "events"
"body" => [
"query" => [
"bool" => [
"must" => [ "match_all" => {}]
"filter" => [
"range" => [
"start_date.date" => [
"gte" => "01/05/2019"
"lte" => "05/2019"
"format" => "dd/MM/yyyy||MM/yyyy"
]
]
]
]
]
"from" => 0
"size" => 30
]
]
For reference see the docs Elasticsearch Reference [7.0] » Query DSL » Compound queries » Bool Query, it contains an example like yours with match_all combined with filters.