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xiaoxia-saas/apps/api/app/api/routes/_default_template.py
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xiaoxia 352221f199
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fix(p0): #1922 from-assets 空 templateId 双斜杠 404 兜底 (#1926)
Co-authored-by: xiaoxia <dev@xiaoxiajianji.com>
Co-committed-by: xiaoxia <dev@xiaoxiajianji.com>
2026-09-15 11:54:06 +08:00

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"""默认模板兜底共享逻辑(P0 #1922).
提供 get_or_create_default_template_id(db, user_id) 共享函数,
供 templates.py 列表查询、clips_standalone.py 独立端点、dependencies.py
resolve_draft_plan_id 三处复用,避免三处各写一套兜底逻辑产生分叉。
根因:PR#1918 清理模板管理 API 时误删了 GET /templates 自动创建默认模板
兜底,前端 PR#1913 去掉空 tid 拦截后首次进入生成页拼出
/templates//editor/clips/from-assets(双斜杠)→ FastAPI 404,阻断新用户首次
生成。
"""
from __future__ import annotations
import logging
from typing import Optional
from sqlalchemy.orm import Session
logger = logging.getLogger(__name__)
def get_or_create_default_template_id(db: Session, user_id: str) -> Optional[str]:
"""获取或自动创建默认配音模板的 id。
判定逻辑(不做异常降级,只有确实创建失败时才回滚重查):
1. 查用户名下 is_active=True 且有 TemplateClipConfig 的模板 → 返回其 id;
2. 无则调用 CreateTemplateUseCase 创建一条默认 voice_over 模板;
3. 创建异常时 rollback 再重查一次(防并发唯一键冲突),重查仍无返回 None。
"""
from packages.adapters.sqlalchemy_impl.models import (
TemplateClipConfigModel,
TemplateModel,
)
from packages.adapters.sqlalchemy_impl.template_repository import (
SQLAlchemyTemplateRepository,
)
from packages.application.template.commands import (
CreateTemplateCommand,
SegmentCommand,
)
from packages.application.template.use_cases import CreateTemplateUseCase
existing = (
db.query(TemplateModel)
.filter(TemplateModel.user_id == user_id, TemplateModel.is_active.is_(True))
.order_by(TemplateModel.created_at.asc())
.first()
)
if existing is not None:
has_seg = (
db.query(TemplateClipConfigModel.id).filter(TemplateClipConfigModel.template_id == existing.id).first()
)
if has_seg:
return existing.id
try:
repo = SQLAlchemyTemplateRepository(db)
cmd = CreateTemplateCommand(
user_id=user_id,
name="默认配音模板",
mode="voice_over",
category="default",
tags=[],
title_config={},
subtitle_config={},
bgm_config={},
estimated_duration=0.0,
segments=[SegmentCommand(segment_order=0, duration_min=1.0, duration_max=30.0)],
)
tpl = CreateTemplateUseCase(repo).execute(cmd)
db.commit()
logger.info("auto-created default voice_over template: id=%s user=%s", tpl.id, user_id)
return tpl.id
except Exception:
db.rollback()
# 重查:可能并发请求已建好
existing = (
db.query(TemplateModel)
.filter(TemplateModel.user_id == user_id, TemplateModel.is_active.is_(True))
.order_by(TemplateModel.created_at.asc())
.first()
)
if existing is not None:
has_seg = (
db.query(TemplateClipConfigModel.id).filter(TemplateClipConfigModel.template_id == existing.id).first()
)
if has_seg:
return existing.id
logger.exception("failed to auto-create default template user=%s", user_id)
return None