def forwards(self, orm):

        # Changing field 'Graph.slug'
        db.alter_column('muparse_graph', 'slug', self.gf('django.db.models.fields.SlugField')(max_length=128, null=True))
        # Adding index on 'Graph', fields ['slug']
        db.create_index('muparse_graph', ['slug'])


        # Changing field 'Graph.name'
        db.alter_column('muparse_graph', 'name', self.gf('django.db.models.fields.CharField')(max_length=255))
        # Removing index on 'Graph', fields ['name']
        db.delete_index('muparse_graph', ['name'])