general: make it possible to set initial level of menu cells (#10040)

combo/data/migrations/0014_menucell_initial_level.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('data', '0013_parameterscell'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='menucell',
+            name='initial_level',
+            field=models.IntegerField(default=-1, verbose_name='Initial Level', choices=[(-1, 'Same as page'), (1, 1), (2, 2)]),
+            preserve_default=True,
+        ),
+    ]

combo/data/models.py

@@ -499,13 +499,16 @@ class BlurpCell(CellBase):
 class MenuCell(CellBase):
     depth = models.PositiveIntegerField(_('Depth'),
             choices=[(i, i) for i in range(1, 3)], default=1, null=False)
+    initial_level = models.IntegerField(_('Initial Level'),
+            choices=[(-1, _('Same as page'))] +
+                    [(i, i) for i in range(1, 3)], default=-1, null=False)
 
     class Meta:
         verbose_name = _('Menu')
 
     def render(self, context):
         from combo.public.menu import render_menu
-        return render_menu(context, level=-1, depth=self.depth)
+        return render_menu(context, level=self.initial_level, depth=self.depth)
 
 
 @register_cell_class