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現在、モデルにデータをインスタンス化するfixtures/initial_data.jsonというファイルがあります。私は、私が初めて実行するときにすべてがスムーズに行くので、jsonに問題はないことを知っている。./manage syncdb。（Django）南で移行するたびに、fixtures/initial_data.jsonについてエラーが発生します
私は南を使用することをアプリに変換した後、私は./manage migrate doorsを実行するたびに、私はこのトレースバックを得る：
Running migrations for doors:
- Migrating forwards to 0002_auto__del_field_userprofile_status.
> doors:0002_auto__del_field_userprofile_status
- Loading initial data for doors.
Problem installing fixture '/Users/hobbes3/Sites/mysite/doors/fixtures/initial_data.json': Traceback (most recent call last):
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 174, in handle
obj.save(using=using)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/core/serializers/base.py", line 165, in save
models.Model.save_base(self.object, using=using, raw=True)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/db/models/base.py", line 526, in save_base
rows = manager.using(using).filter(pk=pk_val)._update(values)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/db/models/query.py", line 491, in _update
return query.get_compiler(self.db).execute_sql(None)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 869, in execute_sql
cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql
cursor.execute(sql, params)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute
return self.cursor.execute(sql, params)
File "/Users/hobbes3/.virtualenvs/doors/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute
return self.cursor.execute(query, args)
IntegrityError: null value in column "created" violates not-null constraint
今私は、エラーを無視
(doors)[email protected] ~/Sites/mysite $ python manage.py migrate doors --list
doors
(*) 0001_initial
(*) 0002_auto__del_field_userprofile_status
サウスが最初にテーブルを切り捨てずにJSONをリロードしようとしているかどうかはわかりません（プライマリキーの競合がありますか？）。しかし、Southのようなエラーは、createdフィールドをNULLに設定してデータを挿入しようとしているようです。なぜ私はそれをしようとしているのか分かりません。
は、私はいつも、移行後に発見された器具を挿入しようと、これは便利ですかどうかわからないんだけど、ここで私のinitial_data.json
[
{
"model" : "doors.usertype",
"pk" : 1,
"fields" : {
"name" : "tenant"
}
},
{
"model" : "doors.usertype",
"pk" : 2,
"fields" : {
"name" : "property manager"
}
},
{
"model" : "doors.usertype",
"pk" : 3,
"fields" : {
"name" : "property owner"
}
},
{
"model" : "doors.usertype",
"pk" : 4,
"fields" : {
"name" : "vendor"
}
},
{
"model" : "doors.usertype",
"pk" : 5,
"fields" : {
"name" : "web user"
}
},
{
"model" : "doors.doorsgroup",
"pk" : 1,
"fields" : {
"name" : "Moderator",
"comment" : "Moderators can create, edit, and delete all orders. They can also modify users, vendors, and places. They can comment on any orders and delete comments. They can view and manage all users.",
"view_all_users" : true,
"manage_all_users" : true,
"view_all_orders" : true,
"create_orders" : true,
"edit_all_orders" : true,
"manage_orders" : true,
"delete_orders" : true,
"create_comments" : true,
"create_any_comments" : true,
"delete_comments" : true,
"view_vendors" : true,
"modify_vendors" : true,
"view_places" : true,
"modify_places" : true
}
},
{
"model" : "doors.doorsgroup",
"pk" : 2,
"fields" : {
"name" : "Manager",
"comment" : "Managers can view, edit, and delete all orders. They can also approve, reject, or close orders. They can view all users.",
"view_all_users" : true,
"view_all_orders" : true,
"create_orders" : true,
"edit_all_orders" : true,
"manage_orders" : true,
"delete_orders" : true,
"create_comments" : true,
"view_vendors" : true,
"view_places" : true
}
},
{
"model" : "doors.doorsgroup",
"pk" : 3,
"fields" : {
"name" : "Tenant",
"comment" : "Tenants can create orders, comment on their orders, and view vendors and places.",
"create_orders" : true,
"create_comments" : true,
"view_vendors" : true,
"view_places" : true
}
},
{
"model" : "doors.doorsgroup",
"pk" : 4,
"fields" : {
"name" : "Vendor",
"comment" : "Vendors can only comment on the orders that are assigned to them.",
"create_comments" : true
}
},
{
"model" : "doors.doorsgroup",
"pk" : 5,
"fields" : {
"name" : "Observer",
"comment" : "Observers can view all users, orders, vendors, and places.",
"view_all_users" : true,
"view_all_orders" : true,
"view_vendors" : true,
"view_places" : true
}
}
]
であると私models.py
class DoorsGroup(models.Model) :
def __unicode__(self) :
return self.name
name = models.CharField(max_length = 135)
comment = models.TextField(blank = True)
# Permissions.
view_all_users = models.BooleanField()
manage_all_users = models.BooleanField() # Assign to places or to vendors.
view_all_orders = models.BooleanField()
create_orders = models.BooleanField()
edit_all_orders = models.BooleanField()
manage_orders = models.BooleanField() # Can approve, reject, and close orders.
delete_orders = models.BooleanField()
create_comments = models.BooleanField()
create_any_comments = models.BooleanField() # Can comment on any orders.
delete_comments = models.BooleanField()
view_vendors = models.BooleanField()
modify_vendors = models.BooleanField() # Can create, edit, and delete vendors.
view_places = models.BooleanField()
modify_places = models.BooleanField()
created = models.DateTimeField(auto_now_add = True)
modified = models.DateTimeField(auto_now = True)
class UserType(models.Model) :
def __unicode__(self) :
return self.name
name = models.CharField(max_length = 135)
created = models.DateTimeField(auto_now_add = True)
modified = models.DateTimeField(auto_now = True)