django报错：django.db.utils.InternalError

Model类：

fromdjango.dbimportmodels

fromcommon.modelsimportDepartment,User

# Create your models here.

classEmployer(models.Model):

user = models.ForeignKey(User)

birthdate = models.DateField

hometown = models.CharField("籍贯",max_length=50)

nation = models.CharField("民族",max_length=20)

edu = models.TextField("教育经历",max_length=500)

resume = models.TextField("工作经历",max_length=500)

def__str__(self):

returnself.emp_name

classMeta:

verbose_name ="职工"#默认显示复数的形式

verbose_name_plural = verbose_name#显示成单数的形式

运行makemigrations正常，但运行migrate报错：

manage.py@travel > migrate"C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\bin\runnerw.exe" C:\Users\Acer\AppData\Local\Programs\Python\Python35\python.exe "C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\helpers\pycharm\django_manage.py" migrate E:/python_project/travelOperations to perform: Synchronize unmigrated apps: staticfiles, messages Apply all migrations: contenttypes, common, travel_list, sessions, auth, admin, employerSynchronizing apps without migrations: Creating tables... Running deferred SQL... Installing custom SQL...Running migrations: Rendering model states... DONE Applying employer.0003_auto_20161203_1445...Traceback (most recent call last): File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 64, in execute return self.cursor.execute(sql, params) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\mysql\base.py", line 124, in execute return self.cursor.execute(query, args) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 166, in execute result = self._query(query) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 322, in _query conn.query(q) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 835, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1019, in _read_query_result result.read() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1302, in read first_packet = self.connection._read_packet() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 981, in _read_packet packet.check_error() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 393, in check_error err.raise_mysql_exception(self._data) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\err.py", line 107, in raise_mysql_exception raise errorclass(errno, errval)pymysql.err.InternalError: (1067, "Invalid default value for 'nation'")The above exception was the direct cause of the following exception:Traceback (most recent call last): File "C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\helpers\pycharm\django_manage.py", line 41, inrun_module(manage_file, None, '__main__', True) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\runpy.py", line 182, in run_module return _run_module_code(code, init_globals, run_name, mod_spec) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\runpy.py", line 96, in _run_module_code mod_name, mod_spec, pkg_name, script_name) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\runpy.py", line 85, in _run_code exec(code, run_globals) File "E:/python_project/travel\manage.py", line 22, inexecute_from_command_line(sys.argv) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\__init__.py", line 354, in execute_from_command_line utility.execute() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\__init__.py", line 346, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\base.py", line 394, in run_from_argv self.execute(*args, **cmd_options) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\base.py", line 445, in execute output = self.handle(*args, **options) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\commands\migrate.py", line 222, in handle executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\executor.py", line 110, in migrate self.apply_migration(states[migration], migration, fake=fake, fake_initial=fake_initial) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\executor.py", line 148, in apply_migration state = migration.apply(state, schema_editor) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\migration.py", line 115, in apply operation.database_forwards(self.app_label, schema_editor, old_state, project_state) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\operations\fields.py", line 201, in database_forwards schema_editor.alter_field(from_model, from_field, to_field) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\base\schema.py", line 484, in alter_field old_db_params, new_db_params, strict) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\base\schema.py", line 636, in _alter_field params, File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\base\schema.py", line 111, in execute cursor.execute(sql, params) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 79, in execute return super(CursorDebugWrapper, self).execute(sql, params) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 64, in execute return self.cursor.execute(sql, params) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\utils.py", line 98, in __exit__ six.reraise(dj_exc_type, dj_exc_value, traceback) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\utils\six.py", line 685, in reraise raise value.with_traceback(tb) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 64, in execute return self.cursor.execute(sql, params) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\mysql\base.py", line 124, in execute return self.cursor.execute(query, args) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 166, in execute result = self._query(query) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 322, in _query conn.query(q) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 835, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1019, in _read_query_result result.read() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1302, in read first_packet = self.connection._read_packet() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 981, in _read_packet packet.check_error() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 393, in check_error err.raise_mysql_exception(self._data) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\err.py", line 107, in raise_mysql_exception raise errorclass(errno, errval)django.db.utils.InternalError: (1067, "Invalid default value for 'nation'")Process finished with exit code 1manage.py@travel > makemigrations"C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\bin\runnerw.exe" C:\Users\Acer\AppData\Local\Programs\Python\Python35\python.exe "C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\helpers\pycharm\django_manage.py" makemigrations E:/python_project/travelMigrations for 'employer': 0005_auto_20161203_1451.py: - Change Meta options on employerProcess finished with exit code 0manage.py@travel > migrate"C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\bin\runnerw.exe" C:\Users\Acer\AppData\Local\Programs\Python\Python35\python.exe "C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\helpers\pycharm\django_manage.py" migrate E:/python_project/travelOperations to perform: Synchronize unmigrated apps: messages, staticfiles Apply all migrations: employer, auth, travel_list, admin, sessions, common, contenttypesSynchronizing apps without migrations: Creating tables... Running deferred SQL... Installing custom SQL...Running migrations: Rendering model states... DONE Applying employer.0003_auto_20161203_1445...Traceback (most recent call last): File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 64, in execute return self.cursor.execute(sql, params) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\mysql\base.py", line 124, in execute return self.cursor.execute(query, args) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 166, in execute result = self._query(query) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 322, in _query conn.query(q) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 835, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1019, in _read_query_result result.read() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1302, in read first_packet = self.connection._read_packet() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 981, in _read_packet packet.check_error() File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 393, in check_error err.raise_mysql_exception(self._data) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\err.py", line 107, in raise_mysql_exception raise errorclass(errno, errval)pymysql.err.InternalError: (1067, "Invalid default value for 'nation'")The above exception was the direct cause of the following exception:Traceback (most recent call last): File "C:\Program Files (x86)\JetBrains\PyCharm 2016.2.3\helpers\pycharm\django_manage.py", line 41, inrun_module(manage_file, None, '__main__', True) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\runpy.py", line 182, in run_module return _run_module_code(code, init_globals, run_name, mod_spec) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\runpy.py", line 96, in _run_module_code mod_name, mod_spec, pkg_name, script_name) File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\runpy.py", line 85, in _run_code exec(code, run_globals) File "E:/python_project/travel\manage.py", line 22, inexecute_from_command_line(sys.argv)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\__init__.py", line 354, in execute_from_command_line

utility.execute()

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\__init__.py", line 346, in execute

self.fetch_command(subcommand).run_from_argv(self.argv)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\base.py", line 394, in run_from_argv

self.execute(*args, **cmd_options)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\base.py", line 445, in execute

output = self.handle(*args, **options)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\core\management\commands\migrate.py", line 222, in handle

executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\executor.py", line 110, in migrate

self.apply_migration(states[migration], migration, fake=fake, fake_initial=fake_initial)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\executor.py", line 148, in apply_migration

state = migration.apply(state, schema_editor)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\migration.py", line 115, in apply

operation.database_forwards(self.app_label, schema_editor, old_state, project_state)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\migrations\operations\fields.py", line 201, in database_forwards

schema_editor.alter_field(from_model, from_field, to_field)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\base\schema.py", line 484, in alter_field

old_db_params, new_db_params, strict)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\base\schema.py", line 636, in _alter_field

params,

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\base\schema.py", line 111, in execute

cursor.execute(sql, params)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 79, in execute

return super(CursorDebugWrapper, self).execute(sql, params)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 64, in execute

return self.cursor.execute(sql, params)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\utils.py", line 98, in __exit__

six.reraise(dj_exc_type, dj_exc_value, traceback)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\utils\six.py", line 685, in reraise

raise value.with_traceback(tb)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\utils.py", line 64, in execute

return self.cursor.execute(sql, params)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\backends\mysql\base.py", line 124, in execute

return self.cursor.execute(query, args)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 166, in execute

result = self._query(query)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\cursors.py", line 322, in _query

conn.query(q)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 835, in query

self._affected_rows = self._read_query_result(unbuffered=unbuffered)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1019, in _read_query_result

result.read()

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 1302, in read

first_packet = self.connection._read_packet()

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 981, in _read_packet

packet.check_error()

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\connections.py", line 393, in check_error

err.raise_mysql_exception(self._data)

File "C:\Users\Acer\AppData\Local\Programs\Python\Python35\lib\site-packages\pymysql\err.py", line 107, in raise_mysql_exception

raise errorclass(errno, errval)

django.db.utils.InternalError: (1067, "Invalid default value for 'nation'")

Process finished with exit code 1

解决办法：

在该字段增加允许为空

最后编辑于：2017.12.04 22:20:30

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django报错：django.db.utils.InternalError

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