{
  "id": "python/django-multiple-db-router-error",
  "signature": "django.core.exceptions.ImproperlyConfigured: 'default' database isn't configured.",
  "signature_zh": "配置错误：'default'数据库未配置",
  "regex": "django\\.core\\.exceptions\\.ImproperlyConfigured:\\ 'default'\\ database\\ isn't\\ configured\\.",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "DATABASES设置中缺少default键",
  "root_cause_type": "generic",
  "root_cause_zh": "settings.py中DATABASES字典没有default配置项",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Django默认使用default，除非显式指定",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "所有数据库操作都会失败",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "DATABASES = {'default': {'ENGINE': 'django.db.backends.sqlite3', 'NAME': BASE_DIR / 'db.sqlite3'}}",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "配置路由器类以处理数据库选择",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-08-21",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}