我正在尝试使用Django创建想法登录页面，这将允许我发布页面并收集电子邮件地址。正确，我的应用程序已启动，运行时一切正常：
python manage.py runserver
或
heroku local web
但是，当我尝试部署到Heroku并运行时；
heroku run python manage.py loaddata pages.json
我遇到了我似乎无法解读或修复的错误：
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: column "show_nav" of relation "pages_page" does not exist
LINE 17: </div>', "show_nav" = true, "nav_color" = '#820000', "...
^
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/base.py", line 305, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/base.py", line 356, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 64, in handle
self.loaddata(fixture_labels)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 104, in loaddata
self.load_label(fixture_label)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 167, in load_label
obj.save(using=self.using)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/serializers/base.py", line 201, in save
models.Model.save_base(self.object, using=using, raw=True, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py", line 824, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py", line 889, in _save_table
forced_update)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py", line 939, in _do_update
return filtered._update(values) > 0
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/query.py", line 652, in _update
return query.get_compiler(self.db).execute_sql(CURSOR)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 1148, in execute_sql
cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 835, in execute_sql
cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/app/.heroku/python/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: Problem installing fixture '/app/pages.json': Could not load pages.Page(pk=1): column "show_nav" of relation "pages_page" does not exist
LINE 17: </div>', "show_nav" = true, "nav_color" = '#820000', "...
我认为这必须与我的models.py页面有关
from django.db import models
from django.core.exceptions import ValidationError
# Create your models here.
LAYOUT_CHOICES = (
('standard', 'Standard'),
('stacked', 'Stacked'),
)
def layout_validator(value):
if value[0] != "#":
raise ValidationError("Must start with #")
if len(value) == 4 or len(value) == 7:
return value
raise ValidationError("Incorrect length")
class Page(models.Model):
title = models.CharField(max_length=225)
title_description = models.TextField(blank=True, null=True)
title_btn = models.CharField(max_length=50, default='Join')
title_btn_url = models.CharField(max_length=50, blank=True, null=True)
content = models.TextField(blank=True, null=True)
show_nav = models.BooleanField(default=True, help_text='Show Navigation Bar?')
nav_color = models.CharField(max_length=7, default='#000000')
layout = models.CharField(max_length=20, choices=LAYOUT_CHOICES, default='standard')
video_embed = models.TextField(null=True, blank=True)
def __str__(self):
return self.title
我试图删除pages.json并从头开始。我尝试进行新的迁移。如果有人对这个“ pages_page关系”不存在什么错误有任何帮助，将不胜感激？