# extending mezzanines blog model

# -- settings.py --

EXTRA_MODEL_FIELDS = (
    # Featured Image Thumbnail
    (
        "mezzanine.blog.models.BlogPost.featured_image_thumbnail",
        "ImageField",
        ("Featured image thumbnail", ),
        {"upload_to" : "uploads/thumbnail", "blank": True, "null": True}
    ),
)
# -- end of settings.py --

# -- admin.py --
from copy import deepcopy
from django.contrib import admin
from mezzanine.blog.admin import BlogPostAdmin
from mezzanine.blog.models import BlogPost

blog_fieldsets = deepcopy(BlogPostAdmin.fieldsets)
blog_fieldsets[0][1]["fields"].insert(-2, "featured_image_thumbnail")

class MyBlogPostAdmin(BlogPostAdmin):
    fieldsets = blog_fieldsets

admin.site.unregister(BlogPost)
admin.site.register(BlogPost, MyBlogPostAdmin)

# -- end of admin.py --

# -- finally --
# make a migration of the new structure to a directory of your choice.
#