ElasticSearch _suggest查询可以返回多个字段吗？

Question

I have the following mapping for an index in which I'm doing a suggest/autocomplete lookup and response.

"mappings": {
    "listing": {
        "_source": {
            "enabled": false
        },
        "dynamic": false,
        "properties": {
            "_all": {
                "enabled": false
            },
            "listingTitle": {
                "type": "completion",
                "index_analyzer": "str_index_analyzer",
                "search_analyzer": "str_search_analyzer"
            },
            "address": {
                "dynamic": false,
                "properties": {
                    "city": {
                        "type": "completion",
                        "index_analyzer": "str_index_analyzer",
                        "search_analyzer": "str_search_analyzer"
                    },
                    "stateOrProvince": {
                        "type": "completion",
                        "index_analyzer": "str_index_analyzer",
                        "search_analyzer": "str_search_analyzer"
                    }
                }
            }
        }
    }
}

This is the endpoint and data for the request: site.dev:9200/listingsuggest/_suggest

{
  "result": {
    "text": "Minn",
    "completion": {
      "field": "address.city"
    }
  }
}

So this works for finding documents that match cities starting with Minn. The issue I'm having is I also want to return the stateOrProvince field value of each document matching "Minn". For example my result set comes back with the following matched words:

Minneapolis
Minnetonka

What I need it to do is return this:

Minneapolis, MN
Minnetonka, MN

The full response currently:

{
    _shards: {
        total: 1
        successful: 1
        failed: 0
    }
    result: [{
        text: Minn
        offset: 0
        length: 4
        options: [{
            text: Minnetonka
            score: 1
        } {
            text: Minneapolis
            score: 1
        }]
    }]
}

Desired full response if possible:

{
    _shards: {
        total: 1
        successful: 1
        failed: 0
    }
    result: [{
        text: Minn
        offset: 0
        length: 4
        options: [{
            text: Minnetonka, MN
            score: 1
        } {
            text: Minneapolis, MN
            score: 1
        }]
    }]
}

Is this, or some variation of that response, possible?

Answer 1

Yes it is possible! Try this:

PUT /listingsuggest
{
   "mappings": {
      "listing": {
         "_source": {
            "enabled": false
         },
         "dynamic": false,
         "properties": {
            "_all": {
               "enabled": false
            },
            "listingTitle": {
               "type": "completion",
               "index_analyzer": "standard",
               "search_analyzer": "standard"
            },
            "address": {
               "dynamic": false,
               "properties": {
                  "city": {
                     "type": "completion",
                     "index_analyzer": "standard",
                     "search_analyzer": "standard"
                  }
               }
            }
         }
      }
   }
}

You don't need address.stateOrProvince .

Post some data:

POST /listingsuggest/listing
{
    "listingTitle" : "title1",
    "address" : {
        "city" : {
            "input" : ["Minneapolis"],
            "output" : "Minneapolis, MN"
        }
    }
}

POST /listingsuggest/listing
{
    "listingTitle" : "title2",
    "address" : {
        "city" : {
            "input": ["Minnetonka"],
            "output" : "Minnetonka, MN"
        }
    }
}

And use this query:

POST /listingsuggest/_suggest
{
  "listing" : {
    "text" : "Minn",
    "completion" : {
      "field" : "address.city"
    }
  }
}

It returns:

   "listing": [
      {
         "options": [
            {
               "text": "Minneapolis, MN",
               "score": 1
            },
            {
               "text": "Minnetonka, MN",
               "score": 1
            }
         ]
      }
   ]