categories as taxinomy

equipment/admin.py

@@ -1,11 +1,12 @@
 from django.contrib import admin
 from django import forms
 
-from .models import Equipment, EquipmentDefault, EquipmentRevision, EquipmentPole, EquipmentCategory, EquipmentLost
+from .models import Equipment, EquipmentDefault, EquipmentRevision, EquipmentCategory, EquipmentLost
 from .fields import IdField, IdWidget
 
 from shared.admin import admin_site
 
+
 class IdForm(forms.ModelForm):
     def __init__(self, *args, **kwargs):
         if 'min_value' in kwargs:
@@ -23,6 +24,7 @@ class IdForm(forms.ModelForm):
                 self.fields[field.name].choices = choices
                 self.fields[field.name].widget = IdWidget(choices=self.fields[field.name].choices)
 
+
 class IdFormset(forms.models.BaseInlineFormSet):
     def get_form_kwargs(self, index):
         kwargs = super().get_form_kwargs(index)
@@ -55,20 +57,19 @@ class EquipmentLostExtraInline(admin.TabularInline):
     classes = ['collapse']
 
 
-class CharFieldModelAdmin(admin.ModelAdmin):
-    list_display = ['name']
-    ordering = ['name']
+class CategoryAdmin(admin.ModelAdmin):
+    list_display = ['name', 'parent']
+    ordering = ['name', 'parent']
 
 
 class EquipmentAdmin(admin.ModelAdmin):
-    list_display = ['name', 'stock', 'owner', 'pole', 'category']
-    ordering = ['name', 'owner', 'pole', 'category']
+    list_display = ['name', 'stock', 'owner', 'category']
+    ordering = ['name', 'owner', 'category']
     inlines = [EquipmentDefaultExtraInline,
                EquipmentLostExtraInline,
                EquipmentRevisionExtraInline]
 
 
 admin_site.register(Equipment, EquipmentAdmin)
-admin_site.register(EquipmentPole, CharFieldModelAdmin)
-admin_site.register(EquipmentCategory, CharFieldModelAdmin)
+admin_site.register(EquipmentCategory, CategoryAdmin)
 admin.site.register(Equipment, EquipmentAdmin)

equipment/migrations/0005_auto_20180808_1013.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.11 on 2018-08-08 10:13
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('equipment', '0004_equipment_owner'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='equipment',
+            name='pole',
+        ),
+        migrations.AddField(
+            model_name='equipmentcategory',
+            name='parent',
+            field=models.ForeignKey(blank=True, default=None, null=True, on_delete=django.db.models.deletion.CASCADE, to='equipment.EquipmentCategory'),
+        ),
+        migrations.DeleteModel(
+            name='EquipmentPole',
+        ),
+    ]

equipment/migrations/0006_auto_20180808_1354.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.11 on 2018-08-08 13:54
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('equipment', '0005_auto_20180808_1013'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='equipmentcategory',
+            name='parent',
+            field=models.ForeignKey(blank=True, default=None, help_text='merci de ne pas faire de référence cyclique', null=True, on_delete=django.db.models.deletion.CASCADE, to='equipment.EquipmentCategory'),
+        ),
+    ]

equipment/models.py

@@ -10,25 +10,18 @@ from taggit.managers import TaggableManager
 from datetime import date
 
 
-class EquipmentPole(models.Model):
-    name = models.CharField(
-                _("nom"),
-                max_length=200,
-                )
-
-    class Meta:
-        verbose_name = _("pôle")
-        verbose_name_plural = _("pôle")
-
-    def __str__(self):
-        return self.name
-
-
 class EquipmentCategory(models.Model):
     name = models.CharField(
                 _("nom"),
                 max_length=200,
                 )
+    parent = models.ForeignKey(
+                'self',
+                blank=True,
+                null=True,
+                default=None,
+                help_text=_("merci de ne pas faire de référence cyclique"),
+                )
 
     class Meta:
         verbose_name = _("catégories")
@@ -55,9 +48,6 @@ class Equipment(EventSpecificMixin, models.Model):
             blank=True,
             null=True,
             )
-    pole = models.ForeignKey(
-            EquipmentPole,
-            )
     category = models.ForeignKey(
             EquipmentCategory,
             )