curl --request PATCH \
  --url https://{projectHost}/collections/{collectionName} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "indexConfigs": {
    "example-field1": {
      "type": "text",
      "analyzers": [
        "english"
      ]
    },
    "example-field2": {
      "type": "vector",
      "dimensions": 128,
      "similarity": "cosine"
    },
    "example-field3": {
      "type": "keyword"
    }
  }
}
'

import requests

url = "https://{projectHost}/collections/{collectionName}"

payload = { "indexConfigs": {
        "example-field1": {
            "type": "text",
            "analyzers": ["english"]
        },
        "example-field2": {
            "type": "vector",
            "dimensions": 128,
            "similarity": "cosine"
        },
        "example-field3": { "type": "keyword" }
    } }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    indexConfigs: {
      'example-field1': {type: 'text', analyzers: ['english']},
      'example-field2': {type: 'vector', dimensions: 128, similarity: 'cosine'},
      'example-field3': {type: 'keyword'}
    }
  })
};

fetch('https://{projectHost}/collections/{collectionName}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{projectHost}/collections/{collectionName}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'indexConfigs' => [
        'example-field1' => [
                'type' => 'text',
                'analyzers' => [
                                'english'
                ]
        ],
        'example-field2' => [
                'type' => 'vector',
                'dimensions' => 128,
                'similarity' => 'cosine'
        ],
        'example-field3' => [
                'type' => 'keyword'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://{projectHost}/collections/{collectionName}"

	payload := strings.NewReader("{\n  \"indexConfigs\": {\n    \"example-field1\": {\n      \"type\": \"text\",\n      \"analyzers\": [\n        \"english\"\n      ]\n    },\n    \"example-field2\": {\n      \"type\": \"vector\",\n      \"dimensions\": 128,\n      \"similarity\": \"cosine\"\n    },\n    \"example-field3\": {\n      \"type\": \"keyword\"\n    }\n  }\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://{projectHost}/collections/{collectionName}")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"indexConfigs\": {\n    \"example-field1\": {\n      \"type\": \"text\",\n      \"analyzers\": [\n        \"english\"\n      ]\n    },\n    \"example-field2\": {\n      \"type\": \"vector\",\n      \"dimensions\": 128,\n      \"similarity\": \"cosine\"\n    },\n    \"example-field3\": {\n      \"type\": \"keyword\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{projectHost}/collections/{collectionName}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"indexConfigs\": {\n    \"example-field1\": {\n      \"type\": \"text\",\n      \"analyzers\": [\n        \"english\"\n      ]\n    },\n    \"example-field2\": {\n      \"type\": \"vector\",\n      \"dimensions\": 128,\n      \"similarity\": \"cosine\"\n    },\n    \"example-field3\": {\n      \"type\": \"keyword\"\n    }\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "collection": {
    "projectName": "example-project-name",
    "collectionName": "example-collection-name",
    "indexConfigs": {
      "example-field1": {
        "type": "text",
        "analyzers": [
          "english"
        ]
      },
      "example-field2": {
        "type": "vector",
        "dimensions": 128,
        "similarity": "cosine"
      },
      "example-field3": {
        "type": "keyword"
      }
    },
    "numDocs": 1000,
    "collectionStatus": "ACTIVE"
  }
}

{
  "message": "Invalid request"
}

{
  "message": "Authentication failed"
}

{
  "message": "Resource not found"
}

{
  "message": "Too many requests"
}

{
  "message": "Internal server error"
}