Avoid hardcoding teachers available for candidate examinations

candidats/models.py

@@ -104,7 +104,7 @@ class Candidate(models.Model):
 
     examination_teacher = models.ForeignKey(
         Teacher, null=True, blank=True, on_delete=models.SET_NULL,
-        limit_choices_to=Q(abrev='MME') | Q(abrev='CLG'), verbose_name='Correct. examen'
+        limit_choices_to={'can_examinate': True}, verbose_name='Correct. examen'
     )
     examination_result = models.PositiveSmallIntegerField('Points examen', blank=True, null=True)
     interview_result = models.PositiveSmallIntegerField('Points entretien prof.', blank=True, null=True)

stages/admin.py

@@ -87,7 +87,7 @@ class TeacherAdmin(admin.ModelAdmin):
     list_filter = (('archived', ArchivedListFilter), 'contract')
     fields = (('civility', 'last_name', 'first_name', 'abrev'),
               ('birth_date', 'email', 'ext_id'),
-              ('contract', 'rate', 'archived'),
+              ('contract', 'rate', 'can_examinate', 'archived'),
               ('previous_report', 'next_report', 'total_logbook'),
               ('user'))
     readonly_fields = ('total_logbook',)

stages/models.py

@@ -104,6 +104,7 @@ class Teacher(models.Model):
     ext_id = models.IntegerField(blank=True, null=True)
     previous_report = models.IntegerField(default=0, verbose_name='Report précédent')
     next_report = models.IntegerField(default=0, verbose_name='Report suivant')
+    can_examinate = models.BooleanField("Peut corriger examens candidats", default=False)
     archived = models.BooleanField(default=False)
     user = models.OneToOneField(
         settings.AUTH_USER_MODEL, on_delete=models.SET_NULL, null=True, blank=True,