layerindex: add "No update" status to LayerItem

Add a status for a layer indicating it should not be updated. I don't
expect this to be widely used (and is only settable from the admin
interface) but would be useful if you have a legacy sub-layer that you
want to prevent from being visible on certain branches - it will prevent
the update script from doing anything with the layer and thus avoid
branch records from being auto-created on branches where you've deleted
it.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

layerindex/forms.py

@@ -179,7 +179,7 @@ class AdvancedRecipeSearchForm(forms.Form):
     field = forms.ChoiceField(choices=FIELD_CHOICES)
     match_type = forms.ChoiceField(choices=MATCH_TYPE_CHOICES)
     value = forms.CharField(max_length=255, required=False)
-    layer = forms.ModelChoiceField(queryset=LayerItem.objects.filter(classic=False).filter(status='P').order_by('name'), empty_label="(any)", required=False)
+    layer = forms.ModelChoiceField(queryset=LayerItem.objects.filter(classic=False).filter(status__in=['P', 'X']).order_by('name'), empty_label="(any)", required=False)
 
 
 class RecipeChangesetForm(forms.ModelForm):

layerindex/migrations/0007_layeritem_status_noupdate.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('layerindex', '0006_change_branch_meta'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='layeritem',
+            name='status',
+            field=models.CharField(default='N', choices=[('N', 'New'), ('P', 'Published'), ('X', 'No update')], max_length=1),
+        ),
+    ]

layerindex/models.py

@@ -65,6 +65,7 @@ class LayerItem(models.Model):
     LAYER_STATUS_CHOICES = (
         ('N', 'New'),
         ('P', 'Published'),
+        ('X', 'No update'),
     )
     LAYER_TYPE_CHOICES = (
         ('A', 'Base'),

layerindex/restviews.py

@@ -22,7 +22,7 @@ class LayerItemSerializer(serializers.ModelSerializer):
         model = LayerItem
 
 class LayerItemViewSet(ParametricSearchableModelViewSet):
-    queryset = LayerItem.objects.filter(status='P')
+    queryset = LayerItem.objects.filter(status__in=['P', 'X'])
     serializer_class = LayerItemSerializer
 
 class LayerBranchSerializer(serializers.ModelSerializer):
@@ -30,7 +30,7 @@ class LayerBranchSerializer(serializers.ModelSerializer):
         model = LayerBranch
 
 class LayerBranchViewSet(ParametricSearchableModelViewSet):
-    queryset = LayerBranch.objects.filter(layer__status='P')
+    queryset = LayerBranch.objects.filter(layer__status__in=['P', 'X'])
     serializer_class = LayerBranchSerializer
 
 class LayerDependencySerializer(serializers.ModelSerializer):
@@ -38,7 +38,7 @@ class LayerDependencySerializer(serializers.ModelSerializer):
         model = LayerDependency
 
 class LayerDependencyViewSet(ParametricSearchableModelViewSet):
-    queryset = LayerDependency.objects.filter(layerbranch__layer__status='P')
+    queryset = LayerDependency.objects.filter(layerbranch__layer__status__in=['P', 'X'])
     serializer_class = LayerDependencySerializer
 
 class RecipeSerializer(serializers.ModelSerializer):

layerindex/update.py

@@ -157,6 +157,7 @@ def main():
             logger.error('No layers matching specified query "%s"' % options.layers)
             sys.exit(1)
     else:
+        # We deliberately exclude status == 'X' ("no update") here
         layerquery = LayerItem.objects.filter(classic=False).filter(status='P')
         if layerquery.count() == 0:
             logger.info("No published layers to update")

layerindex/views.py

@@ -279,7 +279,7 @@ class LayerListView(ListView):
 
     def get_queryset(self):
         _check_url_branch(self.kwargs)
-        return LayerBranch.objects.filter(branch__name=self.kwargs['branch']).filter(layer__status='P').order_by('layer__layer_type', '-layer__index_preference', 'layer__name')
+        return LayerBranch.objects.filter(branch__name=self.kwargs['branch']).filter(layer__status__in=['P', 'X']).order_by('layer__layer_type', '-layer__index_preference', 'layer__name')
 
     def get_context_data(self, **kwargs):
         context = super(LayerListView, self).get_context_data(**kwargs)
@@ -459,7 +459,7 @@ class DuplicatesView(TemplateView):
         context['classes'] = self.get_classes(layer_ids)
         context['url_branch'] = self.kwargs['branch']
         context['this_url_name'] = resolve(self.request.path_info).url_name
-        context['layers'] = LayerBranch.objects.filter(branch__name=self.kwargs['branch']).filter(layer__status='P').order_by( 'layer__name')
+        context['layers'] = LayerBranch.objects.filter(branch__name=self.kwargs['branch']).filter(layer__status__in=['P', 'X']).order_by( 'layer__name')
         context['showlayers'] = layer_ids
         return context