I'm trying to build a faceted search using Elasticsearch-php 6.0, but I'm having a hard time to figure out how to use a date range aggregation. Here's what I'm trying to do :
Mapping sample :
"mappings": {
"_doc": {
"properties": {
...
"timeframe": {
"properties": {
"gte": {
"type": "date",
"format": "yyyy"
},
"lte": {
"type": "date",
"format": "yyyy"
}
}
}
...
In my document, I have this property:
"timeframe":[{"gte":"1701","lte":"1800"}]
I want to be able display a facet with a date range slider, where the user can input a range (min value - max value). Ideally, those min-max values should be returned by the Elasticsearch aggregation automatically given the current query.
Here's the aggregation I'm trying to write in "pseudo code", to give you an idea:
"aggs": {
"date_range": {
"field": "timeframe",
"format": "yyyy",
"ranges": [{
"from": min(timeframe.gte),
"to": max(timeframe.lte)
}]
}
}
I think I need to use Date Range aggregation, min/max aggregation, and pipeline aggregations, but the more I read about them, the more I'm confused. I can't find how to glue this whole world together.
Keep in mind I can change the mapping and / or the document structure if this is not the correct way to achieve this.
Thanks !
As for me with the official "elasticsearch/elasticsearch" package of ES itself, I was able to find a range of my required documents with this document. You need to read the documentation as you'll be needing the format.
$from_date = '2018-03-08T17:58:03Z';
$to_date = '2018-04-08T17:58:03Z';
$params = [
'index' => 'your_index',
'type' => 'your_type',
'body' => [
'query' => [
'range' => [
'my_date_field' => [
//gte = great than or equal, lte = less than or equal
'gte' => $from_date,
// 'lte' => $to_date,
'format' => "yyyy-MM-dd||yyyy-MM-dd'T'HH:mm:ss'Z'",
'boost' => 2.0
]
]
],
]
];
$search = $client->search($params);
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