from mptt.models import MPTTModel
from django.db import models

class Rubricator(MPTTModel):
    parent = models.ForeignKey('self', null=True, blank=True, related_name='children')
    name  = models.CharField(max_length=50)

class Ware(models.Model):
    name       = models.CharField(max_length=150)
    rubricator = models.ForeignKey(Rubricator, blank = True, null = True, verbose_name='Рубрика')

from django.views.generic.simple import direct_to_template
from django.core.context_processors import csrf
from ware.forms import WareMoveForm

class WareAdmin(admin.ModelAdmin):
    actions = ('move_in_rubricator', )
    def move_in_rubricator(self, request, queryset):
        title = 'Move Ware to rubricator'
        c = {}
        c.update(csrf(request))
        if request.method == 'POST':
            form = WareMoveForm(request.POST)
            if form.is_valid():
                rubric = form.cleaned_data.get('rubricator')
                queryset.update(rubricator = rubric)
        else:
            form = WareMoveForm()
        context = {
            'title': title,
            'form': form,
        }
        return direct_to_template(request, 'ware_move.html', context)
    move_in_rubricator.short_description = 'Move Wares to rubric'

from django import forms
from mptt.forms import TreeNodeChoiceField
from ware.models import *

class WareMoveForm(forms.ModelForm):
    rubricator = TreeNodeChoiceField(queryset=Rubricator.tree.all(), level_indicator = u'+--')
    class Meta:
        model = Ware
        fields = ('rubricator', )

{% extends "admin/base_site.html" %}
{% load i18n l10n %}
{% block title %}
    {{ title }}
    <p>{{ debug }}</p>
{% endblock %}
{% block breadcrumbs %}
<div class="breadcrumbs">
     <a href="../../">Home</a> &rsaquo;
     <a href="../">Wares</a> &rsaquo;
     {% trans 'Move wares' %}
</div>
{% endblock %}

{% block content %}   
<form method="post" action=".">{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="Move" />
{% endblock %}