Added limit_options support to Summon.

config/vufind/Summon.ini

@@ -8,6 +8,15 @@ default_sort         = relevance
 ; should be one of the options present in the [Views] section below.
 default_view         = list
 
+; This section controls the result limit options for search results. default_limit
+; sets the default number of results per page. limit_options is a comma-separated
+; list of numbers to be presented to the end-user. If only one limit is required,
+; set default_limit and leave limit_options commented out.
+; WARNING: using large limits may require you to raise your PHP memory limits to
+; avoid errors.
+default_limit        = 20
+;limit_options        = 10,20,40,60,80,100
+
 ; If this setting is true, boolean operators in searches (AND/OR/NOT) will only
 ; be recognized if they are ALL UPPERCASE.  If set to false, they will be
 ; recognized regardless of case.  If set to a comma-separated list of operators

module/VuFind/src/VuFind/Search/Summon/Options.php

@@ -79,6 +79,15 @@ class Options extends \VuFind\Search\Base\Options
         // Load the search configuration file:
         $searchSettings = $configLoader->get($this->searchIni);
 
+        // Set up limit preferences
+        if (isset($searchSettings->General->default_limit)) {
+            $this->defaultLimit = $searchSettings->General->default_limit;
+        }
+        if (isset($searchSettings->General->limit_options)) {
+            $this->limitOptions
+                = explode(",", $searchSettings->General->limit_options);
+        }
+
         // Set up highlighting preference
         if (isset($searchSettings->General->highlighting)) {
             $this->highlight = $searchSettings->General->highlighting;