我在我的应用中添加了django动态刮刀。它在本地工作，所以我将它部署到我的heroku服务器，它给我一个500的服务器错误。我的heroku日志中没有错误消息，它在本地工作正常。因为我没有错误，它在本地工作，我不知道什么是顶级帖子，并想知道是否有人可能有同样的问题。这对我来说很疯狂。
我做了一些挖掘工作。我试着
heroku run python manage.py makemigrations
并得到了这个
Running python manage.py makemigrations on ⬢ heights... up, run.1515
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/commands/makemigrations.py", line 65, in handle
loader = MigrationLoader(None, ignore_no_migrations=True)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 306, in build_graph
_reraise_missing_dependency(migration, parent, e)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 276, in _reraise_missing_dependency
raise exc
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 302, in build_graph
self.graph.add_dependency(migration, key, parent)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/graph.py", line 126, in add_dependency
parent
django.db.migrations.exceptions.NodeNotFoundError: Migration blog.0011_auto_20160816_1834 dependencies reference nonexistent parent node ('dynamic_scraper', '0018_auto_20160816_1834')
这是我的0011_auto_20160816_1834.py
# -*- coding: utf-8 -*-
# Generated by Django 1.9.2 on 2016-08-16 22:34
from __future__ import unicode_literals
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
('dynamic_scraper', '0018_auto_20160816_1834'),
('blog', '0010_auto_20160627_1133'),
]
operations = [
migrations.CreateModel(
name='NewsWebsite',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('name', models.CharField(max_length=200)),
('scraper', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='dynamic_scraper.Scraper')),
('scraper_runtime', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='dynamic_scraper.SchedulerRuntime')),
],
),
migrations.AddField(
model_name='post',
name='news_website',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='blog.NewsWebsite'),
),
]
我可以删除
吗？('dynamic_scraper', '0018_auto_20160816_1834'),
再次运行迁移？我不想完全崩溃我的应用程序。新手程序员，并不完全确定在我的应用程序上这样做的影响。
当我运行show migrations时
(practice) apples-MBP:src ray$ ./manage.py showmigrations
admin
[X] 0001_initial
[X] 0002_logentry_remove_auto_add
auth
[X] 0001_initial
[X] 0002_alter_permission_name_max_length
[X] 0003_alter_user_email_max_length
[X] 0004_alter_user_username_opts
[X] 0005_alter_user_last_login_null
[X] 0006_require_contenttypes_0002
[X] 0007_alter_validators_add_error_messages
blog
[X] 0001_initial
[X] 0002_auto_20160404_2019
[X] 0003_post_image_url
[X] 0004_auto_20160406_2353
[X] 0005_image
[X] 0006_auto_20160603_2317
[X] 0007_auto_20160603_2326
[X] 0008_auto_20160625_1708
[X] 0009_auto_20160627_1034
[X] 0010_auto_20160627_1133
[X] 0011_auto_20160816_1834
contenttypes
[X] 0001_initial
[X] 0002_remove_content_type_name
dynamic_scraper
[X] 0001_initial
[X] 0002_scraper_render_javascript
[X] 0003_auto_20150610_0906
[X] 0004_scrapedobjattr_id_field
[X] 0005_new_dict_params_for_scraper
[X] 0006_request_type_and_body
[X] 0007_dont_filter_attribute
[X] 0008_new_request_page_types_construct
[X] 0009_removed_legacy_request_page_type_scraper_fields
[X] 0010_move_save_to_db_to_scraped_obj_attr
[X] 0011_extracted_checker_attributes_to_own_checker_class
[X] 0012_removed_legacy_checker_scraper_attributes
[X] 0013_added_scraper_save_and_checker_delete_datetime_fields
[X] 0014_added_scraper_save_and_checker_delete_alert_period_fields_for_scraper
[X] 0015_added_datetime_fields_for_last_scraper_save_and_checker_delete_alert
[X] 0016_optional_xpath_fields_text_type_for_x_path_reg_exp_processor_fields
[X] 0017_added_order_to_scraped_obj_attr
[X] 0018_auto_20160816_1834
sessions
[X] 0001_initial
taggit
[X] 0001_initial
[X] 0002_auto_20150616_2121
(practice) apples-MBP:src ray$ heroku run python manage.py showmigrations
Running python manage.py showmigrations on ⬢ cheights... up, run.7252
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/commands/showmigrations.py", line 36, in handle
return self.show_list(connection, options['app_labels'])
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/commands/showmigrations.py", line 44, in show_list
loader = MigrationLoader(connection, ignore_no_migrations=True)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 306, in build_graph
_reraise_missing_dependency(migration, parent, e)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 276, in _reraise_missing_dependency
raise exc
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/loader.py", line 302, in build_graph
self.graph.add_dependency(migration, key, parent)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/migrations/graph.py", line 126, in add_dependency
parent
django.db.migrations.exceptions.NodeNotFoundError: Migration blog.0011_auto_20160816_1834 dependencies reference nonexistent parent node ('dynamic_scraper', '0018_auto_20160816_1834')