issue #965 fixed

sails/src/api/controllers/StudentController.js

@@ -1079,9 +1079,23 @@ module.exports = {
     });
   },
 
-  // update action
-  // update picto atributes for a studentPicto
-  //
+  /**
+    Updates the legend for all pictos in the vocabulary according to following
+    values:
+
+    - 'none': no legend is visualized
+    - 'normal': legend is in pictogram's foot
+    - 'full': no image, just the expression
+
+    @params {request} req {
+      id_stu: {integer} studentID,
+      legend_value: {string} 'none' | 'normal' | 'full'
+    }
+    @params {response} res {
+      id: {integer} studentID,
+      legend_value: {string} 'none' | 'normal' | 'full'
+  }
+  */
   update_legend: function (req, res) {
     var params = req.allParams();
     Student.update_legend(params.id_stu, params.legend_value, function (err) {

sails/src/api/models/Student.js

@@ -540,7 +540,8 @@ module.exports = {
                 ' (json_extract(attributes, \'$.id_cat\') LIKE \'null\' AND ' +
                 ' json_extract(attributes, \'$.coord_y\') = 0 OR  ' +
                 ' json_extract(attributes, \'$.id_cat\') NOT LIKE \'null\' AND ' +
-                ' json_extract(attributes, \'$.coord_y\') > 0); '
+                ' json_extract(attributes, \'$.coord_y\') >= 0 OR ' +
+                ' json_extract(attributes, \'$.free_category_coord_y\') NOT LIKE \'null\');'
                 ;
 
     StuPicto.query(query, function(err, result) {