django.db.utils.DataError: value too long for type character varying(30). I am getting this error while migrating on heroku postgresql
django.db.utils.DataError: value too long for type character varying(30). I am getting this error while migrating on heroku postgresql
我在 PostgreSQL Heroku 上迁移时遇到的错误。注意：它在本地服务器上运行正常。
Traceback (most recent call last):
File "/app/manage.py", line 22, in <module>
main()
File "/app/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/__init__.py", line 413, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/base.py", line 354, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/base.py", line 398, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/base.py", line 89, in wrapped
res = handle_func(*args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/commands/migrate.py", line 244, in handle
post_migrate_state = executor.migrate(
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/executor.py", line 227, in apply_migration
state = migration.apply(state, schema_editor)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/migration.py", line 126, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/operations/fields.py", line 104, in database_forwards
schema_editor.add_field(
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 522, in add_field
self.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 145, in execute
cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
**django.db.utils.DataError: value too long for type character varying(30)**
没有任何长度为 30 的列，即使在删除所有数据后尝试迁移，仍然出现相同的错误。
这是项目的模型
models.py
from django.db import models
from django.contrib.auth.models import User
from django.db.models.fields import AutoField
from django.utils.timezone import now
class pageinfo(models.Model):
page_id=models.IntegerField(AutoField,primary_key=True);
# thumbnail=models.ImageField(null=True,blank=True);
channellink=models.URLField(null=True,default='#')
logo= models.URLField(null=True,blank=True);
youtube_link1=models.URLField(null=True,default='#')
youtube_link2=models.URLField(null=True,default='#')
title=models.CharField(max_length=150,null=True);
display_title=models.CharField(max_length=150,null=True);
subscriber=models.CharField(max_length=15,null=True);
description=models.TextField(null=True)
ratingtitle1=models.CharField(max_length=150,default='Course Depth')
ratingtitle2=models.CharField(max_length=150,default='Language Clarity')
ratingtitle3=models.CharField(max_length=150,default='How interactive videos are')
ratingtitle4=models.CharField(max_length=150,default='Quality of Content')
# Create your models here.
class review(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
comment=models.CharField(max_length=1000,null=True);
type=models.CharField(max_length=120,null=False)
username= models.ForeignKey(User,on_delete=models.CASCADE, null=True);
timeStamp=models.DateTimeField(default=now)
class rating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
email=models.CharField(max_length=80,default='')
timeStamp=models.DateTimeField(default=now)
class languagerating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
email=models.CharField(max_length=80,default='')
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
timeStamp=models.DateTimeField(default=now)
class interactionrating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
email=models.CharField(max_length=80,default='')
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
timeStamp=models.DateTimeField(default=now)
class qualityrating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
email=models.CharField(max_length=80,default='')
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
timeStamp=models.DateTimeField(default=now)
# class user_detai(models.Model):
# username=models.CharField(max_length=50);
# email=models.CharField(max_length=50)
# password=models.CharField( max_length=50)
class Info(models.Model):
name=models.CharField(max_length=40,default='')
email=models.CharField(max_length=80, null=True, );
comment=models.CharField(max_length=1000, null=True);
在您的 pageinfo 模型中，您似乎有
subscriber=models.CharField(max_length=15,null=True);
尝试增加此字段的 max_length 并重新 运行 您的 makemigrations 和 migrate 命令。
I just deleted the junk file inside the migrations>pycache
我在 PostgreSQL Heroku 上迁移时遇到的错误。注意：它在本地服务器上运行正常。
Traceback (most recent call last):
File "/app/manage.py", line 22, in <module>
main()
File "/app/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/__init__.py", line 413, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/base.py", line 354, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/base.py", line 398, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/base.py", line 89, in wrapped
res = handle_func(*args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/management/commands/migrate.py", line 244, in handle
post_migrate_state = executor.migrate(
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/executor.py", line 227, in apply_migration
state = migration.apply(state, schema_editor)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/migration.py", line 126, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/migrations/operations/fields.py", line 104, in database_forwards
schema_editor.add_field(
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 522, in add_field
self.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 145, in execute
cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
**django.db.utils.DataError: value too long for type character varying(30)**
没有任何长度为 30 的列，即使在删除所有数据后尝试迁移，仍然出现相同的错误。
这是项目的模型 models.py
from django.db import models
from django.contrib.auth.models import User
from django.db.models.fields import AutoField
from django.utils.timezone import now
class pageinfo(models.Model):
page_id=models.IntegerField(AutoField,primary_key=True);
# thumbnail=models.ImageField(null=True,blank=True);
channellink=models.URLField(null=True,default='#')
logo= models.URLField(null=True,blank=True);
youtube_link1=models.URLField(null=True,default='#')
youtube_link2=models.URLField(null=True,default='#')
title=models.CharField(max_length=150,null=True);
display_title=models.CharField(max_length=150,null=True);
subscriber=models.CharField(max_length=15,null=True);
description=models.TextField(null=True)
ratingtitle1=models.CharField(max_length=150,default='Course Depth')
ratingtitle2=models.CharField(max_length=150,default='Language Clarity')
ratingtitle3=models.CharField(max_length=150,default='How interactive videos are')
ratingtitle4=models.CharField(max_length=150,default='Quality of Content')
# Create your models here.
class review(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
comment=models.CharField(max_length=1000,null=True);
type=models.CharField(max_length=120,null=False)
username= models.ForeignKey(User,on_delete=models.CASCADE, null=True);
timeStamp=models.DateTimeField(default=now)
class rating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
email=models.CharField(max_length=80,default='')
timeStamp=models.DateTimeField(default=now)
class languagerating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
email=models.CharField(max_length=80,default='')
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
timeStamp=models.DateTimeField(default=now)
class interactionrating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
email=models.CharField(max_length=80,default='')
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
timeStamp=models.DateTimeField(default=now)
class qualityrating(models.Model):
# id=models.ForeignKey(pageinfo,on_delete=models.CASCADE,primary_key=True)
rate=models.IntegerField();
type=models.CharField(max_length=120,null=False)
email=models.CharField(max_length=80,default='')
username= models.ForeignKey(User,on_delete=models.CASCADE,null=True);
timeStamp=models.DateTimeField(default=now)
# class user_detai(models.Model):
# username=models.CharField(max_length=50);
# email=models.CharField(max_length=50)
# password=models.CharField( max_length=50)
class Info(models.Model):
name=models.CharField(max_length=40,default='')
email=models.CharField(max_length=80, null=True, );
comment=models.CharField(max_length=1000, null=True);
在您的 pageinfo 模型中，您似乎有
subscriber=models.CharField(max_length=15,null=True);
尝试增加此字段的 max_length 并重新 运行 您的 makemigrations 和 migrate 命令。
I just deleted the junk file inside the migrations>pycache