make the search config configurable

Author: gregmartyn

CHANGELOG.md

@@ -3,6 +3,8 @@
 All notable changes to `pmatseykanets/laravel-hipchat-slash` will be documented in this file
 
 ## [Unreleased]
+### Added
+- Configurable search config
 
 ## [0.3.0](https://github.com/pmatseykanets/laravel-scout-postgres/releases/tag/v0.3.0) - 2017-01-04
 ### Changed

README.md

@@ -58,6 +58,8 @@ Specify the database connection that should be used to access indexed documents
     // You may want to update index documents directly in PostgreSQL (i.e. via triggers).
     // In this case you can set this value to false.
     'maintain_index' => true,
+    // You can override the default text search configuration. Null uses the default.
+    'search_configuration' => null,
 ],
 ...
 ```
@@ -66,7 +68,7 @@ Specify the database connection that should be used to access indexed documents
 
 ### Configuring PostgreSQL
 
-Make sure that an appropriate [default text search configuration](https://www.postgresql.org/docs/9.5/static/runtime-config-client.html#GUC-DEFAULT-TEXT-SEARCH-CONFIG) is set globbaly (in `postgresql.conf`), for a particular database (`ALTER DATABASE ... SET ...`) or alternatively set `default_text_search_config` in each session.
+Make sure that an appropriate [default text search configuration](https://www.postgresql.org/docs/9.5/static/runtime-config-client.html#GUC-DEFAULT-TEXT-SEARCH-CONFIG) is set globbaly (in `postgresql.conf`), for a particular database (`ALTER DATABASE ... SET default_text_search_config TO ...`) or alternatively set `default_text_search_config` in each session.
 
 To check the current value
 

src/PostgresEngine.php

@@ -109,9 +109,16 @@ protected function toVector(Model $model)
                 return $value === null ? '' : $value;
             });
 
+        $searchConfig = config('scout.pgsql.search_configuration');
+
+        $searchConfigString = '';
+        if ($searchConfig !== null) {
+            $searchConfigString = "'" . $searchConfig . "',";
+        }
+
         $select = $fields->keys()
             ->map(function ($key) use ($model) {
-                $vector = 'to_tsvector(?)';
+                $vector = "to_tsvector($searchConfigString ?)";
                 if ($label = $this->rankFieldWeightLabel($model, $key)) {
                     $vector = "setweight($vector, '$label')";
                 }
@@ -207,10 +214,17 @@ protected function performSearch(Builder $builder, $perPage = 0, $page = 1)
 
         $indexColumn = $this->getIndexColumn($builder->model);
 
+        $searchConfig = config('scout.pgsql.search_configuration');
+
+        $searchConfigString = '';
+        if ($searchConfig !== null) {
+            $searchConfigString = "'" . $searchConfig . "',";
+        }
+
         // Build the query
         $query = $this->database
             ->table($builder->index ?: $builder->model->searchableAs())
-            ->crossJoin($this->database->raw('plainto_tsquery(?) query'))
+            ->crossJoin($this->database->raw("plainto_tsquery($searchConfigString ?) query"))
             ->select($builder->model->getKeyName())
             ->selectRaw("{$this->rankingExpression($builder->model, $indexColumn)} AS rank")
             ->selectRaw('COUNT(*) OVER () AS total_count')