Allow only one discipline per supplies requirement

manuels/forms.py

@@ -70,11 +70,10 @@ class AddBookForm(EditBookForm):
 class EditSuppliesForm(forms.ModelForm):
     class Meta:
         model = SuppliesRequirement
-        fields = ['teacher', 'level', 'fields', 'supplies']
+        fields = ['teacher', 'level', 'field', 'supplies']
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self.fields['fields'].widget.attrs.update(rows=3)
         self.fields['supplies'].widget.attrs.update(rows=3)
         self.fields['teacher'].widget.attrs.update({'class': 'custom-select'})
         if 'level' in self.fields:
@@ -83,7 +82,7 @@ class EditSuppliesForm(forms.ModelForm):
 
 class AddSuppliesForm(EditSuppliesForm):
     class Meta(EditSuppliesForm.Meta):
-        fields = ['teacher', 'levels', 'fields', 'supplies']
+        fields = ['teacher', 'levels', 'field', 'supplies']
 
     add_another = forms.BooleanField(label="Ajouter d'autres fournitures", required=False, initial=True)
     levels = forms.ModelMultipleChoiceField(

manuels/migrations/0031_auto_20190406_1912.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2 on 2019-04-06 17:12
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('manuels', '0030_auto_20190406_1912'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='suppliesrequirement',
+            name='field',
+            field=models.CharField(max_length=50, verbose_name='disciplines'),
+        ),
+    ]

manuels/migrations/0032_auto_20190406_1913.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2 on 2019-04-06 17:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('manuels', '0031_auto_20190406_1912'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='suppliesrequirement',
+            name='field',
+            field=models.CharField(max_length=50, verbose_name='discipline'),
+        ),
+    ]

manuels/models.py

@@ -223,7 +223,7 @@ class SuppliesRequirement(BaseModel):
 
     teacher = models.ForeignKey(verbose_name='coordonnateur', to=Teacher, on_delete=models.PROTECT, null=True)
     level = models.ForeignKey(verbose_name='classe', to=Level, on_delete=models.PROTECT, null=True)
-    fields = models.TextField('disciplines')
+    field = models.CharField('discipline', max_length=50)
     supplies = models.TextField('fournitures')
     done = models.BooleanField(
         'Traité',