我在 Ubuntu 14.04.5 上运行 Django 1.11 和 Python 3.4
将我的开发代码移至测试服务器并遇到一些奇怪的错误。任何人都可以从回溯中看出什么问题吗？
我是 linux 的新手，第一次尝试时犯了在 Windows 机器上进行开发的错误。我已经创建了测试和生产服务器的 virtualbox 副本用于开发，但我希望我现在可以挽救测试服务器上的内容。
我认为我的应用正在寻找适合此环境的正确目录，但我是 Django、Python 和 linux 菜鸟。
任何方向都会非常有帮助。
**更新:我为相关应用程序添加了 models.py 和迁移。另外，我在开发机器上使用 sqlite，在测试服务器上使用 postgreSQL(像个傻瓜一样)。
谢谢! staff_manager/models.py
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
# Create your models here.
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
from smrt.settings import DATE_INPUT_FORMATS
class OrganizationTitle(models.Model):
def __str__(self):
return "{}".format(self.organization_title_name)
organization_title_name = models.CharField(max_length=150, unique=True)
class ClassificationTitle(models.Model):
def __str__(self):
return "{}".format(self.classification_title_name)
classification_title_name = models.CharField(max_length=150, unique=True)
class WorkingTitle(models.Model):
def __str__(self):
return "{}".format(self.working_title_name)
working_title_name = models.CharField(max_length=150, unique=True)
class Category(models.Model):
def __str__(self):
return "{}".format(self.category_name)
category_name = models.CharField(max_length=150, unique=True)
class Department(models.Model):
def __str__(self):
return "{}".format(self.department_name)
department_name = models.CharField(max_length=150, unique=True)
class Employee(models.Model):
first_name = models.CharField(max_length=150)
last_name = models.CharField(max_length=150)
org_title = models.ForeignKey(OrganizationTitle, blank=True, null=True, on_delete=models.SET_NULL)
manager = models.ForeignKey('self', blank=True, null=True, on_delete=models.SET_NULL)
manager_email = models.EmailField(max_length=50, blank=True, null=True)
hire_date = models.DateField(blank=True, null=True)
classification_title = models.ForeignKey(ClassificationTitle, blank=True, null=True, on_delete=models.SET_NULL)
working_title = models.ForeignKey(WorkingTitle, blank=True, null=True, on_delete=models.SET_NULL)
email_address = models.EmailField(max_length=250, blank=False, unique=True,
error_messages={'unique': 'An account with this email exist.',
'required': 'Please provide an email address.'})
category = models.ForeignKey(Category, blank=True, null=True, on_delete=models.SET_NULL)
is_substitute = models.BooleanField(default=False)
department = models.ForeignKey(Department, blank=True, null=True, on_delete=models.SET_NULL)
is_active = models.BooleanField(default=True)
is_manager = models.BooleanField(default=False)
class Meta:
ordering = ('is_active', 'last_name',)
def __str__(self):
return "{}".format(self.first_name + ' ' + self.last_name)
def __iter__(self):
return iter([
self.email_address,
self.last_name,
self.first_name,
self.org_title,
self.manager,
self.manager.email_address,
self.hire_date,
self.classification_title,
self.working_title,
self.email_address,
self.category,
self.is_substitute,
self.department
])
def save(self, *args, **kwargs):
for field_name in ['first_name', 'last_name']:
val = getattr(self, field_name, False)
if val:
setattr(self, field_name, val.capitalize())
super(Employee, self).save(*args, **kwargs)
迁移 staff_manager.0003_auto_20180131_1756:
# -*- coding: utf-8 -*-
# Generated by Django 1.11.7 on 2018-01-31 17:56
from __future__ import unicode_literals
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
('staff_manager', '0002_auto_20171127_2244'),
]
operations = [
migrations.CreateModel(
name='Category',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('category_name', models.CharField(max_length=150, unique=True)),
],
),
migrations.CreateModel(
name='ClassificationTitle',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('classification_title_name', models.CharField(max_length=150, unique=True)),
],
),
migrations.CreateModel(
name='Department',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('department_name', models.CharField(max_length=150, unique=True)),
],
),
migrations.CreateModel(
name='OrganizationTitle',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('organization_title_name', models.CharField(max_length=150, unique=True)),
],
),
migrations.CreateModel(
name='WorkingTitle',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('working_title_name', models.CharField(max_length=150, unique=True)),
],
),
migrations.AlterField(
model_name='employee',
name='category',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='staff_manager.Category'),
),
migrations.AlterField(
model_name='employee',
name='classification_title',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='staff_manager.ClassificationTitle'),
),
migrations.AlterField(
model_name='employee',
name='department',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='staff_manager.Department'),
),
migrations.AlterField(
model_name='employee',
name='email_address',
field=models.EmailField(error_messages={'required': 'Please provide an email address.', 'unique': 'An account with this email exist.'}, max_length=250, unique=True),
),
migrations.AlterField(
model_name='employee',
name='first_name',
field=models.CharField(max_length=150),
),
migrations.AlterField(
model_name='employee',
name='hire_date',
field=models.DateField(blank=True, null=True),
),
migrations.AlterField(
model_name='employee',
name='last_name',
field=models.CharField(max_length=150),
),
migrations.AlterField(
model_name='employee',
name='manager',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='staff_manager.Employee'),
),
migrations.AlterField(
model_name='employee',
name='manager_email',
field=models.EmailField(blank=True, max_length=50, null=True),
),
migrations.AlterField(
model_name='employee',
name='org_title',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='staff_manager.OrganizationTitle'),
),
migrations.AlterField(
model_name='employee',
name='working_title',
field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='staff_manager.WorkingTitle'),
),
]
回溯:
Operations to perform:
Apply all migrations: admin, auth, contenttypes, csvimport, sessions, staff_manager
Running migrations:
Applying staff_manager.0003_auto_20180131_1756...Traceback (most recent call last):
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
psycopg2.DataError: invalid input syntax for integer: "test"
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 "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
utility.execute()
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/core/management/__init__.py", line 356, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 204, in handle
fake_initial=fake_initial,
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/migrations/executor.py", line 115, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/migrations/migration.py", line 129, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/migrations/operations/fields.py", line 216, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/base/schema.py", line 515, in alter_field
old_db_params, new_db_params, strict)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/postgresql/schema.py", line 112, in _alter_field
new_db_params, strict,
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/base/schema.py", line 684, in _alter_field
params,
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/base/schema.py", line 120, in execute
cursor.execute(sql, params)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/utils.py", line 80, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/www-root/envs/django_env_1/lib/python3.4/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
django.db.utils.DataError: invalid input syntax for integer: "test"
(django_env_1) www-root@Server:~/envs/django_env_1/smrt$
^C
(django_env_1) www-root@Server:~/envs/django_env_1/smrt$ django.db.utils.DataError: invalid input syntax for integer: "test"django.db.utils.DataError: invalid input syntax for integer: "test"
最佳答案
该问题可能与 this open bug 有关在 Django 。您现在正在转换为 ForeignKey 的字段之一中有一些测试数据。
例如，也许 department 曾经是一个 CharField 并且您添加了一个将“test”作为其 department 值的员工。现在您正在尝试将 department 从 CharField 更改为 ForeignKey。问题在于 Django 正在尝试将先前的值“test”转换为 ForeignKey 的关系值(整数)。
我能想到几个好的解决方案:
- 如果这只是一个测试数据库，只需重置您的数据库并在干净的数据库上运行迁移
- 如果您需要迁移现有数据，请确定哪个字段具有“测试”值。然后尝试类似于错误报告中给出的解决方案:
```
from __future__ import unicode_literals
from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
('documents', '0042_auto_19700101-0000'),
]
operations = [
migrations.RunSQL('ALTER TABLE documents_document_tags ALTER tag_id TYPE varchar(32);'),
]
关于python - psycopg2.DataError : invalid input syntax for integer: "test" Getting error when moving code to test server，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48548878/