Django的不错扩展
nicedjango的Python项目详细描述
nicedjango
不错的django工具
仅对所有对象及其相关对象的所需模型数据进行选择性转储和加载 一个或多个查询集的对象。
这是由
- getting a graph of all relations between models,
- getting all pks first in chunks,
- dump them in an order that enables correct loading.
# show model graph parts that would be dumped and those which not:
# example for query model a1.A with relation to child a1.B(A)
./manage.py dump_graph -p -q a -r a.b
a1-a:
a1-a.b to child a1-b.pk
excludes:
a1-a.f to foreign a1-f.a
a1-b:
a1-b.pk to parent a1-a.pk
excludes:
a1-b.c to child a1-c.pk
a1-b.e to child a1-e.pk
# dump all objects from a1.models.A.objects.filter() with relation a.b as compact yaml:
./manage.py dump_graph -f dump.yaml -s compact_yaml -q a.filter(pk__in=(1,2)) -r a.b
- a1-a: [pk]
- [1]
- [2]
- a1-b: [pk]
- [2]
# load back the dumped dump.yaml
./manage.py load_graph -f dump.yaml -s compact_yaml
# by default serializing into compact csv files is enabled:
mkdir dump_folder
./manage.py dump_graph -f dump_folder -q a.filter(pk__in=(1,2)) -r a.b
#results in two files under dump_folder:
# a1-a.csv:
a1-a:pk
1
2
# and a1-b.csv:
a1-b:pk
2
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