Bug 8954: Make languages list in advanced search translatable (revision 1)

In opac-search.pl and search.pl, this patch moves the $lang variable from the end to the begining of the script, and use it as a parameter for getAllLanguages.
In Languages.pm, getAllLanguages function is modified :
- if no parameter is passed to the function, it returns english languages names
- if a $lang parameter conforming to RFC4646 syntax is passed :
-- the function returns languages names translated in $lang if possible
-- if a language name is not translated in $lang in database, the function returns english language name
To test, set your opac and staff interface in english and in other languages and check search.pl and opac-search.pl :
- If language names in your languages_description table are translated in the same language you use for your GUI, the language names in dropdown list will be translated in this language (+native name).
- If your GUI is in english, or in a language into whitch languages names are not translated in languages_description, the dropdown list will stay in english (+native name).

Signed-off-by: Marc Veron <veron@veron.ch>

Patch behaves as expected.

With Opac language set to French I got all languages with French language name.
With German (de-DE), I got only a few with German language names (and all other with English ones),
this was due to missing entries for de-DE in table language_descriptions.
This behaviour is consistent with the description above.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>

Tested language list in OPAC and staff advanced search is translated
properly after applying the patch. Checked that language switcher still
works like it should.

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Fixed typo in POD.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>

C4/Languages.pm

@@ -186,19 +186,35 @@ Returns a reference to an array of hashes:
 =cut
 
 sub getAllLanguages {
+    my $lang = shift;
+# if no parameter is passed to the function, it returns english languages names
+# if a $lang parameter conforming to RFC4646 syntax is passed, the function returns languages names translated in $lang
+# if a language name is not translated in $lang in database, the function returns english language name
     my @languages_loop;
     my $dbh=C4::Context->dbh;
-    my $current_language = shift || 'en';
+    my $default_language = 'en';
+    my $current_language = $default_language;
+    if ($lang) {
+        $current_language = regex_lang_subtags($lang)->{'language'};
+    }
     my $sth = $dbh->prepare('SELECT * FROM language_subtag_registry WHERE type=\'language\'');
     $sth->execute();
     while (my $language_subtag_registry = $sth->fetchrow_hashref) {
-
-        # pull out all the script descriptions for each language
+        my $desc;
+        # check if language name is stored in current language
+        my $sth4= $dbh->prepare("SELECT description FROM language_descriptions WHERE type='language' AND subtag =? AND lang = ?");
+        $sth4->execute($language_subtag_registry->{subtag},$current_language);
+        while (my $language_desc = $sth4->fetchrow_hashref) {
+             $desc=$language_desc->{description};
+        }
         my $sth2= $dbh->prepare("SELECT * FROM language_descriptions LEFT JOIN language_rfc4646_to_iso639 on language_rfc4646_to_iso639.rfc4646_subtag = language_descriptions.subtag WHERE type='language' AND subtag =? AND language_descriptions.lang = ?");
-        $sth2->execute($language_subtag_registry->{subtag},$current_language);
-
+        if ($desc) {
+            $sth2->execute($language_subtag_registry->{subtag},$current_language);
+        }
+        else {
+            $sth2->execute($language_subtag_registry->{subtag},$default_language);
+        }
         my $sth3 = $dbh->prepare("SELECT description FROM language_descriptions WHERE type='language' AND subtag=? AND lang=?");
-
         # add the correct description info
         while (my $language_descriptions = $sth2->fetchrow_hashref) {
             $sth3->execute($language_subtag_registry->{subtag},$language_subtag_registry->{subtag});

catalogue/search.pl

@@ -158,7 +158,7 @@ use CGI qw('-no_undef_params');
 my $cgi = new CGI;
 
 my ($template,$borrowernumber,$cookie);
-
+my $lang = C4::Templates::getlanguage($cgi, 'intranet');
 # decide which template to use
 my $template_name;
 my $template_type;
@@ -328,7 +328,7 @@ if ( $template_type eq 'advsearch' ) {
                       search_boxes_loop => \@search_boxes_array);
 
     # load the language limits (for search)
-    my $languages_limit_loop = getAllLanguages();
+    my $languages_limit_loop = getAllLanguages($lang);
     $template->param(search_languages_loop => $languages_limit_loop,);
 
     # Expanded search options in advanced search:
@@ -471,7 +471,6 @@ my ( $error,$query,$simple_query,$query_cgi,$query_desc,$limit,$limit_cgi,$limit
 my @results;
 
 ## I. BUILD THE QUERY
-my $lang = C4::Templates::getlanguage($cgi, 'intranet');
 ( $error,$query,$simple_query,$query_cgi,$query_desc,$limit,$limit_cgi,$limit_desc,$stopwords_removed,$query_type) = buildQuery(\@operators,\@operands,\@indexes,\@limits,\@sort_by,$scan,$lang);
 
 ## parse the query_cgi string and put it into a form suitable for <input>s

opac/opac-search.pl

@@ -55,7 +55,7 @@ BEGIN {
 }
 
 my ($template,$borrowernumber,$cookie);
-
+my $lang = C4::Templates::getlanguage($cgi, 'opac');
 # decide which template to use
 my $template_name;
 my $template_type = 'basic';
@@ -150,7 +150,7 @@ $template->param(
 );
 
 # load the language limits (for search)
-my $languages_limit_loop = getAllLanguages();
+my $languages_limit_loop = getAllLanguages($lang);
 $template->param(search_languages_loop => $languages_limit_loop,);
 
 # load the Type stuff
@@ -386,7 +386,6 @@ my ($error,$query,$simple_query,$query_cgi,$query_desc,$limit,$limit_cgi,$limit_
 my @results;
 
 ## I. BUILD THE QUERY
-my $lang = C4::Templates::getlanguage($cgi, 'opac');
 ( $error,$query,$simple_query,$query_cgi,$query_desc,$limit,$limit_cgi,$limit_desc,$stopwords_removed,$query_type) = buildQuery(\@operators,\@operands,\@indexes,\@limits,\@sort_by, 0, $lang);
 
 sub _input_cgi_parse {