south / south / management / commands /

Outputs a graphviz dot file of the dependencies.

from __future__ import print_function

from optparse import make_option
import re
import textwrap

from import BaseCommand
from import no_style

from south.migration import Migrations, all_migrations

class Command(BaseCommand):

    help = "Outputs a GraphViz dot file of all migration dependencies to stdout."
    def handle(self, **options):
        # Resolve dependencies

        colors = [ 'crimson', 'darkgreen', 'darkgoldenrod', 'navy',
                'brown', 'darkorange', 'aquamarine' , 'blueviolet' ]
        color_index = 0
        wrapper = textwrap.TextWrapper(width=40)
        print("digraph G {")
        # Group each app in a subgraph
        for migrations in all_migrations():
            print("  subgraph %s {" % migrations.app_label())
            print("    node [color=%s];" % colors[color_index])
            for migration in migrations:
                # Munge the label - text wrap and change _ to spaces
                label = "%s - %s" % (
                label = re.sub(r"_+", " ", label)
                label=  "\\n".join(wrapper.wrap(label))
                print('    "%s.%s" [label="%s"];' % (
                        migration.app_label(),, label))
            print("  }")
            color_index = (color_index + 1) % len(colors)

        # For every migration, print its links.
        for migrations in all_migrations():
            for migration in migrations:
                for other in migration.dependencies:
                    # Added weight tends to keep migrations from the same app
                    # in vertical alignment
                    attrs = "[weight=2.0]"
                    # But the more interesting edges are those between apps
                    if other.app_label() != migration.app_label():
                        attrs = "[style=bold]"
                    print('  "%s.%s" -> "%s.%s" %s;' % (
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
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Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.