Simple Plone Migration

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from os import makedirs
from django.conf import settings
from django.contrib.auth.models import User
from django.template import defaultfilters

# The following models should be located in models.py of your django app
# In place of the code below import the models e.g. 
# from mydjangosite.app.models import Article, Page, File, Image, Tag

# Start

class Article(models.Model):
    objects = GroupManager()    
    title = models.CharField(max_length=150)
    slug = models.SlugField(max_length=150, prepopulate_from=('title',))
    STATE_CHOICES = (('D','Draft'),('P','Published'),('S','Private'))
    TYPE_CHOICES = (('N','News'),('C','CD feature'),('A','article'),('I','interviews'),('S','series'), ('B','blog'))
    state = models.CharField(max_length=1, choices=STATE_CHOICES, default='D')
    type = models.CharField(max_length=1, choices=TYPE_CHOICES, default='N')
    description = models.TextField(blank=True, null=True) 
    content = models.TextField()
    author = models.ForeignKey(User, default=2)
    creation_date = models.DateTimeField(blank=True)
    publication_date = models.DateTimeField(blank=True, null=True)
    modification_date = models.DateTimeField(blank=True)
    tags = models.ManyToManyField(Tag , filter_interface=models.HORIZONTAL, blank=True, null=True) 
    links = models.ManyToManyField('self', filter_interface=models.HORIZONTAL, blank=True, null=True) 

class File(models.Model):
    order = models.IntegerField(default=1)
    file = models.FileField(upload_to='%Y/%m/', blank=True, null=True)
    title = models.CharField(max_length=150, null=True, core=True)
    description = models.CharField(max_length=150, null=True, blank=True)
    FORMAT = (('audio/mpeg','audio/mpeg'),)
    format = models.CharField(max_length=150, choices=FORMAT, null=True, blank=True)
    article = models.ForeignKey('Article', edit_inline=True, num_in_admin=1)

class Image(models.Model):
    order = models.IntegerField(default=1)
    image = models.ImageField(upload_to='%Y/%m/',blank=True, null=True)
    title = models.CharField(max_length=150, null=True,core=True)
    description = models.CharField(max_length=150, blank=True, null=True)
    article = models.ForeignKey('Article', edit_inline=True, num_in_admin=1)

class Page(models.Model):
    url = models.CharField(_('URL'), max_length=150, validator_list=[validators.isAlphaNumericURL], help_text=_("Example: '/about/contact/'. Make sure to have leading and trailing slashes."))
    title = models.CharField(max_length=150)
    content = models.TextField()

class TagType(models.Model):
    type = models.CharField(maxlength=5

# End

media_root = settings.MEDIA_ROOT

def write_file(dir_name, file_name, plone_object):
    try:            
        makedirs(media_root + dir_name)
    except:
        # Directory already exists
        pass
    fd = open(media_root + dir_name + file_name, 'w')
    try:
        fd.write(plone_object.data)
    except:
        fd.write(plone_object.data.data)

def get_plonearticle_images(plone_object, django_object):

    p, d = plone_object, django_object

    p.REQUEST = 'FAKE' 

    images = p.getImageBrains()

    if len(images)>0:
        for x in images:
            image = x.getObject()
            i = Image()
            i.title = image.Title()
            i.description = image.Description()
            
            dir_name = p.created().strftime('%Y/%m/')
            file_name = d.slug + '-' + image.getId() + '.jpg'

            i.image = dir_name + file_name
            
            write_file(dir_name, file_name, image)
            i.article_id = d.id
            i.save()


def get_plonearticle_links(plone_object, django_object):

    p, d = plone_object, django_object
    for x in p.getLinks():
                l = Article.objects.filter(slug=x.getId())
                if l:
                    d.links.add(l[0])

def get_at_links(plone_object, django_object):

    p, d = plone_object, django_object
    for x in p.getRelatedItems():
            l = Article.objects.filter(slug=x.getId())
            if l:
                d.links.add(l[0])


def get_plonearticle_attchments(plone_object, django_object):

    p, d = plone_object, django_object
    for x in p.getAttachmentBrains():
        file = x.getObject()
        
        f = File()
        f.title = file.Title()
        f.description = file.Description()

        dir_name = p.created().strftime('%Y/%m/')

        if file.Format() == 'audio/mpeg':
            file_name = d.slug + '-' + file.getId() + '.mp3'
        else:
            file_name = d.slug + '-' + file.getId()

        f.file = dir_name + file_name
        f.format = file.Format()

        write_file(dir_name, file_name, file)
        f.article_id = d.id
        f.save()

def get_atnews_image(plone_object, django_object):

    p, d = plone_object, django_object
    image = p.getImage()
    if image:
        i = Image()
        i.title = image.Title()
        i.description = image.Description()
        
        dir_name = p.created().strftime('%Y/%m/')
        file_name = d.slug + '-' + image.getId() + '.jpg'

        i.image = dir_name + file_name
        
        write_file(dir_name, file_name, image)
        i.article_id = d.id
        i.save()


def get_dc_core(plone_object, django_object):
    """ Gets these DC-fields: Title, id, Description, Subject,
    Creation Date, Modification Date, Effective Date"""

    p, d = plone_object, django_object

    d.title = p.Title()
    d.slug = p.getId()

    d.creation_date = p.creation_date.ISO()
    d.modification_date = p.modification_date.ISO()
    if p.effective_date:
        d.publication_date = p.effective_date.ISO()
    
    t, s = User.objects.get_or_create(username=p.Creator())
    d.author_id = t.id 
    d.description = p.Description()
    d.save()

    for subject in p.Subject():
        slug = defaultfilters.slugify(subject)
        t, s = Tag.objects.get_or_create(name=subject, slug=slug)
        d.tags.add(t)

def get_items(r):
    for x in r:
        p = x.getObject()

        if p.meta_type == 'PloneArticle':
            a = Article()
            a.state = 'P'
            a.content = p.getText()
            get_dc_core(p, a)
            get_plonearticle_images(p, a)
            get_plonearticle_links(p, a)
            get_plonearticle_attchments(p, a)
            a.save() 
            print 'Saved', a.title

        if p.meta_type == 'ATNewsItem':
            a = Article()
            a.state = 'P'
            a.content = p.getText()
            get_dc_core(p, a)
            get_at_links(p, a)
            get_atnews_image(p, a)
            a.save() 
            print 'Saved', a.title, 'Type: ATNewsItem'

        if p.meta_type == 'ATDocument':
            d = Page()
            d.content = p.getText()
            d.title = p.Title()
            d.url = p.getId()
            d.save()
            print 'Saved', d.title, 'Type: ATDocument'

        if p.meta_type == 'Portal File':
            pass

def start(context):
    types = ['ATNewsItem','PloneArticle', 'ATDocument']
    r = context.portal_catalog.searchResults(meta_type={'query':types,'operator':'or'},sort_on='Date')
    print 'Found', len(r), ' objects'
    get_items(r)

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