From cad0125f1342e63e4c408a4fc6952dac358b0df7 Mon Sep 17 00:00:00 2001
From: Brendan Lawlor <blawlor@clamsnet.org>
Date: Fri, 14 Jun 2024 19:11:56 +0000
Subject: [PATCH] Bug 37077: Fix report muti select for zero and single
 selections

This patch updates the javascript overriding the form submission when reports have multi select parameters.

When there are more than one multi selects, and the user selcts one value from each, it skips updating the value of the select, so it doens't send duplicate parameters anymore.

If there are no selections made it will pass '%' for all values. This allows the multi select to be optional in the report. If no selections are made it is assumed that you are not using that parameter to limit the report.

Test plan:
1. Go to Reports and create a report from SQL
   select *
   from items
   where
   homebranch in <<Libraries|branches:in>>
   and
   itype in <<Item type|itemtypes:in>>
3. Run the report but pick only 1 library and 1 item type
4. Click the "Show SQL code"
5. Notice that the two parameters were filled correctly
6. Run the report again with zero selections
7. Click the "Show SQL code"
8. Notice that the '%' is used for the parameter
9. Run the report again with combinations of single, multiple and zero selections
10. confirm the SQL code is generated as you would expect.
---
 .../prog/en/modules/reports/guided_reports_start.tt   | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/reports/guided_reports_start.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/reports/guided_reports_start.tt
index 50f7a65a4f..1784021abe 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/reports/guided_reports_start.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/reports/guided_reports_start.tt
@@ -882,7 +882,7 @@
                                                 <label for="sql_params_[% sql_param.labelid | html %]">[% sql_param.entry | html %]:</label>
                                                 [% IF (sql_param.select_multiple) %]
                                                     <select name="[%- sql_param.input.name | html -%]" tabindex="1"  id="[%- sql_param.input.id | html -%]" multiple>
-                                                        <option value="null" hidden></option>
+                                                        <option value="%" hidden></option>
                                                 [% ELSE %]
                                                     <select name="[%- sql_param.input.name | html -%]" tabindex="1"  id="[%- sql_param.input.id | html -%]">
                                                 [% END %]
@@ -1581,8 +1581,13 @@
 
             $('#report_param_form').on('submit', function(e) {
                 $('#report_param_form').find('select[multiple]').each( function (i) {
-                    var $selected = $('option:first', this).val();
-                    $(this).val($selected);
+                    if( $(this).find('option:selected').length === 0 ) {
+                        $(this).val(['%']);
+                    }
+                    else if( $(this).find('option:selected').length > 1 ) {
+                        var $selected = $('option:first', this).val();
+                        $(this).val($selected);
+                    }
                 });
             });
         }
-- 
2.39.2