Heroku Django ValueError：無效文字爲int（）以10爲底：' - '

在Heroku上運行遷移時，我總是收到ValueError。我的django應用程序在本地沒有問題。從我所能看到的情況來看，我認爲問題出在這個模型上，但我找不到它會是什麼。特別是因爲運行makemigrations並遷移本地工作就好了。Heroku Django ValueError：無效文字爲int（）以10爲底：' - '

的錯誤，我得到：（注：僅在Heroku上運行時：heroku run python manage.py migrate）

Running python manage.py migrate on ⬢ nameless-sands-... up, run.1867 (Free) 
Operations to perform: 
    Apply all migrations: admin, auth, contenttypes, narocilnice, sessions 
Running migrations: 
    Applying narocilnice.0012_auto_20170808_1312...Traceback (most recent call last): 
    File "manage.py", line 22, in <module> 
    execute_from_command_line(sys.argv) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line 
    utility.execute() 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/__init__.py", line 355, in execute 
    self.fetch_command(subcommand).run_from_argv(self.argv) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/base.py", line 283, in run_from_argv 
    self.execute(*args, **cmd_options) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/base.py", line 330, in execute 
    output = self.handle(*args, **options) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 204, in handle 
    fake_initial=fake_initial, 
    File "/app/.heroku/python/lib/python2.7/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 "/app/.heroku/python/lib/python2.7/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 "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/executor.py", line 244, in apply_migration 
    state = migration.apply(state, schema_editor) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/migration.py", line 129, in apply 
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/operations/fields.py", line 215, in database_forwards 
    schema_editor.alter_field(from_model, from_field, to_field) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 515, in alter_field 
    old_db_params, new_db_params, strict) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/postgresql/schema.py", line 112, in _alter_field 
    new_db_params, strict, 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 613, in _alter_field 
    new_default = self.effective_default(new_field) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 229, in effective_default 
    default = field.get_db_prep_save(default, self.connection) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 770, in get_db_prep_save 
    prepared=False) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 762, in get_db_prep_value 
    value = self.get_prep_value(value) 
    File "/app/.heroku/python/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 1853, in get_prep_value 
    return int(value) 
ValueError: invalid literal for int() with base 10: '-'

來源

2017-08-11 Super Cokoloko

我改變0012_auto_20170808_1312.py文件，有行時整數提交了默認爲「 - 」。我刪了它。但我仍然不知道爲什麼在當地這不是問題？

來源

2017-08-11 16:38:09

您是否在本地使用與heroku相同的數據庫？ –

是的我使用相同的數據庫 –

我最好的猜測是，當你在本地運行時，默認值是別的東西，無論是在makemigrations期間用戶輸入還是文件不同。 ValueError有效，如果DBMS相同，則應在同一遷移文件上本地提出。 –

Heroku Django ValueError：無效文字爲int（）以10爲底：' - '

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