How to use the feincms3.cleanse.CleansedRichTextField function in feincms3

``get_absolute_url`` implementation.
    """

    # NOTE! All categories require a matching entry in
    # app.pages.models.Page.APPLICATIONS.
    CATEGORIES = (
        ('blog', _('blog')),
        ('publications', _('publications')),
    )

    is_active = models.BooleanField(_('is active'), default=False)
    title = models.CharField(_('title'), max_length=200)
    slug = models.SlugField(_('slug'), unique_for_year='publication_date')
    publication_date = models.DateTimeField(
        _('publication date'), default=timezone.now)
    body = CleansedRichTextField(_('body'))
    category = models.CharField(
        _('category'),
        max_length=20,
        db_index=True,
        choices=CATEGORIES,
    )

    objects = ArticleManager()

    class Meta:
        get_latest_by = 'publication_date'
        ordering = ['-publication_date']
        verbose_name = _('article')
        verbose_name_plural = _('articles')

    def __str__(self):

initial = True

    dependencies = [
    ]

    operations = [
        migrations.CreateModel(
            name='Article',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('is_active', models.BooleanField(default=False, verbose_name='is active')),
                ('title', models.CharField(max_length=200, verbose_name='title')),
                ('slug', models.SlugField(unique_for_year='publication_date', verbose_name='slug')),
                ('publication_date', models.DateTimeField(default=django.utils.timezone.now, verbose_name='publication date')),
                ('body', feincms3.cleanse.CleansedRichTextField(verbose_name='body')),
                ('category', models.CharField(choices=[('blog', 'blog'), ('publications', 'publications')], db_index=True, max_length=20, verbose_name='category')),
            ],
            options={
                'verbose_name': 'article',
                'ordering': ['-publication_date'],
                'get_latest_by': 'publication_date',
                'verbose_name_plural': 'articles',
            },
        ),
        migrations.CreateModel(
            name='Image',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('image', imagefield.fields.ImageField(height_field='height', upload_to='images/%Y/%m', verbose_name='image', width_field='width')),
                ('width', models.PositiveIntegerField(blank=True, editable=False, null=True, verbose_name='image width')),
                ('height', models.PositiveIntegerField(blank=True, editable=False, null=True, verbose_name='image height')),

('position', models.PositiveIntegerField(db_index=True, default=0, editable=False)),
                ('path', models.CharField(blank=True, help_text="Generated automatically if 'static path' is unset.", max_length=1000, unique=True, validators=[django.core.validators.RegexValidator(message='Path must start and end with a slash (/).', regex='^/(|.+/)$')], verbose_name='path')),
                ('static_path', models.BooleanField(default=False, verbose_name='static path')),
                ('parent', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='children', to='pages.Page')),
            ],
            options={
                'verbose_name': 'page',
                'verbose_name_plural': 'pages',
                'abstract': False,
            },
        ),
        migrations.CreateModel(
            name='RichText',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('text', feincms3.cleanse.CleansedRichTextField(verbose_name='text')),
                ('region', models.CharField(max_length=255)),
                ('ordering', models.IntegerField(default=0)),
                ('parent', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='pages_richtext_set', to='pages.Page')),
            ],
            options={
                'verbose_name': 'rich text',
                'verbose_name_plural': 'rich texts',
                'abstract': False,
            },
        ),
        migrations.AddField(
            model_name='image',
            name='parent',
            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='pages_image_set', to='pages.Page'),
        ),

__all__ = ("RichText", "RichTextInline", "render_richtext")


class RichText(models.Model):
    """
    Rich text plugin

    To use this, a `django-ckeditor
    `_ configuration named
    ``richtext-plugin`` is required. See the section :mod:`HTML cleansing
    ` for the recommended configuration.
    """

    text = CleansedRichTextField(_("text"), config_name="richtext-plugin")

    class Meta:
        abstract = True
        verbose_name = _("rich text")
        verbose_name_plural = _("rich texts")

    def __str__(self):
        # Return the first few words of the content (with tags stripped)
        return Truncator(strip_tags(self.text)).words(10, truncate=" ...")


class RichTextInline(ContentEditorInline):
    """
    The only difference with the standard ``ContentEditorInline`` is that this
    inline adds the ``feincms3/plugin_ckeditor.js`` file which handles the
    CKEditor widget activation and deactivation inside the content editor.