Bug 27680: Add support for sorting fields with multiple data points

This patch adds proper handling for sorting a single column that is
constructed of multiple data entities.. i.e `"data": "string1:string2"`

It does NOT add support for filtering on multiple columns yet.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

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

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

Koha/REST/Plugin/Query.pm

@@ -92,9 +92,10 @@ Generates the DBIC order_by attributes based on I<$params>, and merges into I<$a
 
             if ( defined $args->{params}->{_order_by} ) {
                 my $order_by = $args->{params}->{_order_by};
+                $order_by = [ split(/,/, $order_by) ] if ( index(',',$order_by) == -1);
                 if ( reftype($order_by) and reftype($order_by) eq 'ARRAY' ) {
                     my @order_by = map { _build_order_atom({ string => $_, result_set => $result_set }) }
-                                @{ $args->{params}->{_order_by} };
+                                @{ $order_by };
                     $attributes->{order_by} = \@order_by;
                 }
                 else {

api/v1/swagger/parameters.json

@@ -72,7 +72,7 @@
     "required": false,
     "description": "Sorting criteria",
     "type": "array",
-    "collectionFormat": "pipes",
+    "collectionFormat": "csv",
     "items": {
         "type": "string"
     }

koha-tmpl/intranet-tmpl/prog/js/datatables.js

@@ -637,9 +637,9 @@ jQuery.fn.dataTable.ext.errMode = function(settings, note, message) {
                                     order.forEach(function (e,i) {
                                         var order_col      = e.column;
                                         var order_by       = options.columns[order_col].data;
-                                        order_by           = order_by.split(':')[0];
+                                        order_by           = order_by.split(':');
                                         var order_dir      = e.dir == 'asc' ? '+' : '-';
-                                        dataSet._order_by = order_dir + (!order_by.includes('.')?'me.'+order_by:order_by);
+                                        dataSet._order_by = order_by.map(x => order_dir + (!x.includes('.')?'me.'+x:x)).join(',');
                                     });
                                 }