Bug 12561: Add warning on about page

If a default xslt file has been removed or if the one filled in one of
the syspref does not exist.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

about.pl

@@ -319,6 +319,31 @@ if ( C4::Context->preference('ILLModule') ) {
     $template->param( warnILLConfiguration => $warnILLConfiguration );
 }
 
+{
+    # XSLT sysprefs
+    my @xslt_prefs = qw(
+        OPACXSLTDetailsDisplay
+        OPACXSLTListsDisplay
+        OPACXSLTResultsDisplay
+        XSLTDetailsDisplay
+        XSLTListsDisplay
+        XSLTResultsDisplay
+    );
+    my @warnXSLT;
+    for my $p ( @xslt_prefs ) {
+        my $xsl_filename = C4::XSLT::get_xsl_filename( $p );
+        next if -e $xsl_filename;
+        push @warnXSLT,
+          {
+            syspref  => $p,
+            value    => C4::Context->preference("$p"),
+            filename => $xsl_filename
+          };
+    }
+
+    $template->param( warnXSLT => \@warnXSLT ) if @warnXSLT;
+}
+
 if ( C4::Context->preference('SearchEngine') eq 'Elasticsearch' ) {
     # Check ES configuration health and runtime status
 

koha-tmpl/intranet-tmpl/prog/en/modules/about.tt

@@ -299,7 +299,7 @@
             Contact your system administrator.
         [% END %]
 
-        [% IF warnPrefBiblioAddsAuthorities || warnPrefEasyAnalyticalRecords || warnPrefAnonymousPatronOPACPrivacy || warnPrefAnonymousPatronAnonSuggestions || warnPrefAnonymousPatronOPACPrivacy_PatronDoesNotExist || warnPrefAnonymousPatronAnonSuggestions_PatronDoesNotExist || warnPrefKohaAdminEmailAddress || warnPrefOpacHiddenItems || invalid_yesno.count || warnNoActiveCurrency || AutoSelfCheckPatronDoesNotHaveSelfCheckPerm || AutoSelfCheckPatronHasTooManyPerm || warnStatisticsFieldsError || warnNoTemplateCaching || warnILLConfiguration || oauth2_missing_deps || bad_yaml_prefs || warnIssuingRules || config_bcrypt_settings_no_set || warnHiddenBiblionumbers.size %]
+        [% IF warnPrefBiblioAddsAuthorities || warnPrefEasyAnalyticalRecords || warnPrefAnonymousPatronOPACPrivacy || warnPrefAnonymousPatronAnonSuggestions || warnPrefAnonymousPatronOPACPrivacy_PatronDoesNotExist || warnPrefAnonymousPatronAnonSuggestions_PatronDoesNotExist || warnPrefKohaAdminEmailAddress || warnPrefOpacHiddenItems || invalid_yesno.count || warnNoActiveCurrency || AutoSelfCheckPatronDoesNotHaveSelfCheckPerm || AutoSelfCheckPatronHasTooManyPerm || warnStatisticsFieldsError || warnNoTemplateCaching || warnILLConfiguration || warnXSLT || oauth2_missing_deps || bad_yaml_prefs || warnIssuingRules || config_bcrypt_settings_no_set || warnHiddenBiblionumbers.size %]
             <h2>Warnings regarding the system configuration</h2>
             <table>
                 <caption>Preferences and parameters</caption>
@@ -327,6 +327,11 @@
                 [% IF warnPrefOpacHiddenItems %]
                     <tr><th scope="row"><strong>Warning</strong> </th><td>System preference 'OpacHiddenItems' generates a warning and will produce unexpected behaviors: [% warnPrefOpacHiddenItems | html %]</th></tr>
                 [% END %]
+                [% IF warnXSLT %]
+                    [% FOR p IN warnXSLT %]
+                        <tr><th scope="row"><strong>Warning</strong> </th><td>System preference '[% p.syspref | html %]' is '[% p.value | html %]', but the file '[% p.filename | html %]' does not exist.</th></tr>
+                    [% END %]
+                [% END %]
                 [% IF invalid_yesno.count %]
                     [% FOR p IN invalid_yesno %]
                         <tr><th scope="row"><strong>Warning</strong> </th><td>System preference '[% p.variable | html %]' must be '0' or '1', but is [% IF p.value.defined %]'[% p.value | html%]'[% ELSE %]NULL[% END %].</td></tr>