如何使用php在elasticsearch中添加更多像此查询

Question

I am trying to include Elastic search into my application. In a scenario a user can select field type and enter the searchable value.

Let say, Search using First Name and Value is 'ABC'. I have tried this using bool query,but How i can use 'more_like_this' query method?. This what I have done so far.

$searchParams['index'] = 'articles';
$searchParams['type']  = 'article';
$searchParams['body']['query']['match']['body'] = 'ABC';
$queryResponse = $es->search($searchParams);

but if i put more_like_this into the query field,data cannot be selected. any help please? Thanks in advance

This is the edited code

$searchParams['index'] = 'articles';
$searchParams['type']  = 'article';

$searchParams['body']['query']['more_like_this']['fields'] = array('body','title');
$searchParams['body']['query']['more_like_this']['like_text'] =  $q;
$searchParams['body']['query']['more_like_this']['min_term_freq'] = 1;
$searchParams['body']['query']['more_like_this']['percent_terms_to_match'] = 1;
$searchParams['body']['query']['more_like_this']['min_doc_freq'] = 1;

Can you tell me what this lines for?

$searchParams['body']['query']['more_like_this']['min_term_freq'] = 1;
$searchParams['body']['query']['more_like_this']['percent_terms_to_match'] = 1;
$searchParams['body']['query']['more_like_this']['min_doc_freq'] = 1;

Answer 1

You need to do an array, that will look like a json to ES:

{
   "query": {
      "more_like_this": {
         "fields": [
            "text"
         ],
         "like_text": "apple",
         "min_term_freq": 1,
         "percent_terms_to_match": 1,
         "min_doc_freq": 1
      }
   }
}

So in PHP it will be:

$searchParams['body']['query']['more_like_this']['fields'] = array('body');
$searchParams['body']['query']['more_like_this']['like_text'] = 'apple';
$searchParams['body']['query']['more_like_this']['min_term_freq'] = 1;
$searchParams['body']['query']['more_like_this']['percent_terms_to_match'] = 1;
$searchParams['body']['query']['more_like_this']['min_doc_freq'] = 1;