Preservation module: models - change alteration and alteration causes for m2m (refs #3639)

2 files changed, 10 insertions, 19 deletions

diff --git a/archaeological_finds/migrations/0008_auto_20171004_1125.py b/archaeological_finds/migrations/0008_auto_20171004_1327.py
index 72d8f8973..0af50395a 100644
--- a/archaeological_finds/migrations/0008_auto_20171004_1125.py
+++ b/archaeological_finds/migrations/0008_auto_20171004_1327.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.11 on 2017-10-04 11:25
+# Generated by Django 1.11 on 2017-10-04 13:27
 from __future__ import unicode_literals
 
 import django.core.validators
@@ -98,13 +98,13 @@ class Migration(migrations.Migration):
         ),
         migrations.AddField(
             model_name='find',
-            name='alteration',
-            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='archaeological_finds.AlterationType', verbose_name='Alteration'),
+            name='alteration_causes',
+            field=models.ManyToManyField(blank=True, related_name='finds', to='archaeological_finds.AlterationCauseType', verbose_name='Alteration cause'),
         ),
         migrations.AddField(
             model_name='find',
-            name='alteration_cause',
-            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='archaeological_finds.AlterationCauseType', verbose_name='Alteration cause'),
+            name='alterations',
+            field=models.ManyToManyField(blank=True, related_name='finds', to='archaeological_finds.AlterationType', verbose_name='Alteration'),
         ),
         migrations.AddField(
             model_name='find',
@@ -113,16 +113,6 @@ class Migration(migrations.Migration):
         ),
         migrations.AddField(
             model_name='historicalfind',
-            name='alteration',
-            field=models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='archaeological_finds.AlterationType'),
-        ),
-        migrations.AddField(
-            model_name='historicalfind',
-            name='alteration_cause',
-            field=models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='archaeological_finds.AlterationCauseType'),
-        ),
-        migrations.AddField(
-            model_name='historicalfind',
             name='treatment_emergency',
             field=models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='archaeological_finds.TreatmentEmergencyType'),
         ),
diff --git a/archaeological_finds/models_finds.py b/archaeological_finds/models_finds.py
index bf026c03f..3d379d2a7 100644
--- a/archaeological_finds/models_finds.py
+++ b/archaeological_finds/models_finds.py
@@ -716,12 +716,13 @@ class Find(BulkUpdatedItem, ValueGetter, BaseHistorizedItem, ImageModel,
     preservation_to_considers = models.ManyToManyField(
         PreservationType, verbose_name=_(u"Type of preservation to consider"),
         related_name='finds', blank=True)
-    alteration = models.ForeignKey(
-        AlterationType, verbose_name=_(u"Alteration"), blank=True, null=True
+    alterations = models.ManyToManyField(
+        AlterationType, verbose_name=_(u"Alteration"), blank=True,
+        related_name='finds'
     )
-    alteration_cause = models.ForeignKey(
+    alteration_causes = models.ManyToManyField(
         AlterationCauseType, verbose_name=_(u"Alteration cause"), blank=True,
-        null=True
+        related_name='finds'
     )
     treatment_emergency = models.ForeignKey(
         TreatmentEmergencyType, verbose_name=_(u"Treatment emergency"),