Display student age at period start on attributions view

stages/models.py

@@ -1,4 +1,4 @@
-from datetime import date
+from datetime import date, timedelta
 
 from django.db import models
 
@@ -77,6 +77,13 @@ class Student(models.Model):
     def __str__(self):
         return '%s %s' % (self.last_name, self.first_name)
 
+    def age_at(self, date_):
+        """Return age of student at `date_` time, as a string."""
+        age = (date.today() - self.birth_date) / timedelta(days=365.2425)
+        age_y = int(age)
+        age_m = int((age - age_y) * 12)
+        return '%d ans%s' % (age_y, ' %d m.' % age_m if age_m > 0 else '')
+
     @classmethod
     def prepare_import(cls, values):
         ''' Hook for tabimport, before new object get created '''

stages/static/js/attribution.js

@@ -144,14 +144,16 @@ $(document).ready(function() {
   });
 
   $('#student_select').change(function(ev) {
-    $('#student_detail').load('/student/' + $(this).val() + '/summary/', function() {
-        $('div#previous_stages_head').toggle(function() {
-            $('ul#previous_stages_list').toggle();
-            $(this).find('img').attr('src', static_url + 'img/open.png');
-        }, function() {
-            $('ul#previous_stages_list').toggle();
-            $(this).find('img').attr('src', static_url + 'img/closed.png');
-        });
+    $('#student_detail').load(
+        '/student/' + $(this).val() + '/summary/?period=' + $.cookie('periode'),
+        function() {
+            $('div#previous_stages_head').toggle(function() {
+                $('ul#previous_stages_list').toggle();
+                $(this).find('img').attr('src', static_url + 'img/open.png');
+            }, function() {
+                $('ul#previous_stages_list').toggle();
+                $(this).find('img').attr('src', static_url + 'img/closed.png');
+            });
     }).addClass("filled");
     current_student = $(this).val();
     if (current_avail !== null) $('input#valid_training').show();

stages/views.py

@@ -102,6 +102,14 @@ class StudentSummaryView(DetailView):
         context = super(StudentSummaryView, self).get_context_data(**kwargs)
         context['previous_stages'] = self.object.training_set.all(
             ).select_related('availability__corporation').order_by('availability__period__end_date')
+        period_id = self.request.GET.get('period')
+        if period_id:
+            try:
+                period = Period.objects.get(pk=int(period_id))
+            except Period.DoesNotExist:
+                pass
+            else:
+                context['age_for_stage'] = self.object.age_at(period.start_date)
         return context
 
 

templates/student_summary.html

@@ -12,5 +12,5 @@
 <div id="summary">
   {{ object.first_name }} {{ object.last_name }}<br>
   {{ object.pcode }} {{ object.city }}<br>
-  Date de naissance: {{ object.birth_date }}
+  Date de naissance: {{ object.birth_date }} {% if age_for_stage %}(<span title="Âge au début du stage">{{ age_for_stage }}){% endif %}</span>
 </div>