项目基础模块代码

This commit is contained in:
2025-02-19 11:47:33 +08:00
parent 3cb2a4c507
commit 31302bcd17
30 changed files with 588 additions and 74 deletions

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@ -0,0 +1,86 @@
from app.model.crud import project_type_crud as ptc
from app.model.crud import project_label_crud as plc
from app.model.crud import project_info_crud as pic
from app.service import project_service as ps
from app.model.schemas.project_info_schemas import ProjectInfoIn, ProjectInfoPager
from app.model.schemas.project_label_schemas import ProjectLabel
from app.db.db_session import get_db
from app.common.jwt_check import get_user_id
from app.common import reponse_code as rc
from fastapi import APIRouter, Depends, Request
from sqlalchemy.orm import Session
"""项目管理API"""
project = APIRouter()
@project.get("/types")
def get_type_list(session: Session = Depends(get_db)):
"""获取项目类别"""
type_list = ptc.get_list(session)
return rc.response_success(data=type_list)
@project.post("/list")
def project_pager(info: ProjectInfoPager, session: Session = Depends(get_db)):
pager = pic.get_project_pager(info, session)
return rc.response_success_pager(pager)
@project.post("/add")
def add_project(request: Request, info: ProjectInfoIn, session: Session = Depends(get_db)):
"""新建项目"""
if pic.check_project_name(info.project_name, session):
return rc.response_error("已经存在相同名称的项目")
user_id = get_user_id(request)
ps.add_project(info, session, user_id)
return rc.response_success(msg="新建成功")
@project.post("/add_label")
def add_label(label: ProjectLabel, session: Session = Depends(get_db)):
"""
新增标签
:param label:
:param session:
:return:
"""
if plc.check_label_name(label.project_id, label.label_name, session):
return rc.response_error("标签名称已经存在,不能重复")
label_save = ProjectLabel(**label.dict())
plc.add_label(label_save, session)
return rc.response_success(msg="保存成功")
@project.post("/up_label")
def up_label(label: ProjectLabel, session: Session = Depends(get_db)):
"""
修改标签
:param label:
:param session:
:return:
"""
if plc.check_label_name(label.project_id, label.label_name, session, label.id):
return rc.response_error("修改的标签名称已经存在,不能重复")
label_save = ProjectLabel(**label.dict())
plc.update_label(label_save, session)
return rc.response_success(msg="修改成功")
@project.post("/del_label")
def del_label(label: ProjectLabel, session: Session = Depends(get_db)):
"""
删除标签
:param label:
:param session:
:return:
"""
row_del = plc.update_label(label.id, session)
if row_del > 0:
return rc.response_success(msg="删除成功")
else:
return rc.response_error("删除失败")

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@ -1,17 +1,18 @@
from typing import List
from fastapi import APIRouter
from fastapi import UploadFile
import os
upload = APIRouter()
from app.config.config_reader import images_url
upload_files = APIRouter()
@upload.post("/")
def upload_file(files: List[UploadFile]):
@upload_files.post("/")
def upload(files: List[UploadFile], project_no: str):
paths = []
for file in files:
path = os.path.join("images", file.filename)
path = os.path.join(images_url, project_no, file.filename)
with open(path, "wb") as f:
for line in file.file:
f.write(line)

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@ -1,8 +1,8 @@
from fastapi import APIRouter, Depends
from app.model.schemas.sys_user_schemas import SysUserOut, SysUserIN, SysUserPager
from app.model.schemas.sys_user_schemas import SysUserOut, SysUserIn, SysUserPager
from app.common import reponse_code as rc
from app.model.crud import sys_user_crud as us
from app.model.model import SysUser
from app.model.sys_model import SysUser
from app.common.redis_cli import redis_conn
from sqlalchemy.orm import Session
@ -20,7 +20,7 @@ def user_pager(user: SysUserPager, session: Session = Depends(get_db)):
@user.post("/")
def add_user(user: SysUserIN, session: Session = Depends(get_db)):
def add_user(user: SysUserIn, session: Session = Depends(get_db)):
"""
新增用户
:param session:
@ -30,7 +30,7 @@ def add_user(user: SysUserIN, session: Session = Depends(get_db)):
if us.check_username(user.username, session):
return rc.response_error(msg="该用户名已存在!")
else:
user_in= SysUser(**user.dict())
user_in = SysUser(**user.dict())
user_in.user_status = '0'
if us.add_user(user_in, session):
return rc.response_success(msg="保存成功")
@ -49,7 +49,7 @@ def get_user(id: int, session: Session = Depends(get_db)):
user = us.get_user_by_id(id, session)
if user is None:
return rc.response_success(data=None)
user_out = SysUserOut(**dict(user))
user_out = SysUserOut.from_orm(user)
return rc.response_success(data=user_out.dict())

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@ -4,6 +4,11 @@ from fastapi.middleware.cors import CORSMiddleware
from app.application.token_middleware import TokenMiddleware
from app.application.logger_middleware import LoggerMiddleware
from app.api.common.upload_file import upload_files
from app.api.sys.login_api import login
from app.api.sys.sys_user_api import user
from app.api.business.project_api import project
my_app = FastAPI()
@ -18,6 +23,14 @@ my_app.add_middleware(
allow_headers=["*"],
)
#注意中间的顺序,这个地方是倒序执行的
'''
注意中间的顺序,这个地方是倒序执行的
'''
my_app.add_middleware(LoggerMiddleware)
my_app.add_middleware(TokenMiddleware)
my_app.include_router(user, prefix="/user", tags=["用户管理API"])
my_app.include_router(login, prefix="/login", tags=["用户登录接口"])
my_app.include_router(upload_files, prefix="/upload", tags=["文件上传API"])
my_app.include_router(project, prefix="/proj", tags=["项目管理API"])

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@ -0,0 +1,10 @@
from fastapi import HTTPException, Request
from app.common.reponse_code import response_error
from app import my_app
"""全局异常处理"""
@my_app.exception_handlers(HTTPException)
async def http_exception(request: Request, he: HTTPException):
return response_error(request.url + "出现异常:" + he.detail)

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@ -2,8 +2,8 @@ from fastapi import status
from starlette.middleware.base import BaseHTTPMiddleware
from urllib.request import Request
from jwt import PyJWTError
from common import reponse_code as rc
from common import jwt_check as jc
from app.common import reponse_code as rc
from app.common import jwt_check as jc

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@ -2,6 +2,7 @@ import datetime
import jwt
from app.common.redis_cli import redis_conn
from fastapi import Request
# 过期时间单位S
exp = 6000
@ -48,3 +49,11 @@ def check_token(token: str):
raise jwt.ExpiredSignatureError("Expired Token")
except jwt.InvalidTokenError:
raise jwt.InvalidTokenError("Invalid Token")
def get_user_id(request: Request):
"""根据Request请求获取token"""
token = request.headers.get("Authorization")
decoded_payload = check_token(token)
user_id = decoded_payload['user_id']
return user_id

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@ -12,6 +12,7 @@ def response_code_view(code: int,msg: str) -> Response:
}
)
def response_success(msg: str = "查询成功", data: object = None):
return JSONResponse(
status_code=status.HTTP_200_OK,
@ -35,7 +36,7 @@ def response_success_pager(pager: Pager):
)
def response_error(msg:str):
def response_error(msg: str):
return JSONResponse(
status_code=status.HTTP_200_OK,
content={

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@ -8,4 +8,11 @@ db = 0
password = sdust2020
[log]
dir = D:\syg\workspace\logs
dir = D:\syg\workspace\logs
[yolo]
datasets_url = D:\syg\yolov5\datasets
runs_url = D:\syg\yolov5\runs
[images]
image_url = D:\syg\images

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@ -1,11 +0,0 @@
[mysql]
database_url = mysql+pymysql://root:root@localhost:3306/sun
[redis]
host = localhost
port = 6379
db = 0
password = 123456
[log]
dir = /Users/macbookpro/sunyg/workspace/logs

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@ -0,0 +1,18 @@
[mysql]
database_url = mysql+pymysql://root:root@localhost:3306/sun
[redis]
host = localhost
port = 6379
db = 0
password = 123456
[log]
dir = /Users/macbookpro/sunyg/workspace/logs
[yolo]
datasets_url = /home/yolov5/datasets
runs_url = /home/yolov5/runs
[images]
image_url = /home/images

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@ -3,6 +3,8 @@ import os
env = "dev"
# env = "prod"
script_directory = os.path.dirname(os.path.abspath(__file__))
config_path = os.path.join(script_directory, f'application_config_{env}.ini')
@ -18,4 +20,9 @@ redis_port = config.get('redis', 'port')
redis_db = config.get('redis', 'db')
redis_password = config.get('redis', 'password')
log_dir = config.get('log', 'dir')
log_dir = config.get('log', 'dir')
datasets_url = config.get('yolo', 'datasets_url')
runs_url = config.get('yolo', 'runs_url')
images_url = config.get('images', 'image_url')

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@ -11,10 +11,6 @@ class DbCommon(Base):
create_time: Mapped[datetime.datetime] = mapped_column(default=datetime.datetime.utcnow())
update_time: Mapped[datetime.datetime] = mapped_column(default=datetime.datetime.utcnow(), onupdate=datetime.datetime.utcnow())
def keys(self):
return ["id", "create_time", "update_time"]
@declared_attr
def __tablename__(cls):
return cls.__name__.lower()

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@ -0,0 +1,42 @@
from app.db.db_base import DbCommon
from sqlalchemy import String, Integer
from sqlalchemy.orm import Mapped, mapped_column
class ProjectType(DbCommon):
"""
项目类别表 - 标识项目的类型目前存在的目标识别OCR识别瑕疵检测图像分类
"""
__tablename__ = "project_type"
type_code = Mapped[str] = mapped_column(String(20), unique=True, nullable=False)
type_name = Mapped[str] = mapped_column(String(20))
icon_path = Mapped[str] = mapped_column(String(255))
description = Mapped[str] = mapped_column(String(255))
type_status = Mapped[str] = mapped_column(String(10))
class ProjectInfo(DbCommon):
"""项目信息表"""
__tablename__ = "project_info"
project_no = Mapped[str] = mapped_column(String(32), unique=True, nullable=False)
project_name = Mapped[str] = mapped_column(String(32), unique=True, nullable=False)
type_code = Mapped[str] = mapped_column(String(10))
description = Mapped[str] = mapped_column(String(255))
project_status = Mapped[str] = mapped_column(String(10))
user_id = Mapped[int] = mapped_column(Integer)
train_version = Mapped[int] = mapped_column(Integer)
class ProjectLabel(DbCommon):
"""项目标签表"""
__tablename__ = "project_label"
label_name = Mapped[str] = mapped_column(String(32), unique=True, nullable=False)
project_id = Mapped[int] = mapped_column(Integer, nullable=False)
class ProjectImage(DbCommon):
"""项目图片表"""
__tablename__ = "project_image"
image_url = Mapped[str] = mapped_column(String(255), nullable=False)
thumb_image_url = Mapped[str] = mapped_column(String(255), nullable=False)
project_id = Mapped[int] = mapped_column(Integer)

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@ -0,0 +1,35 @@
from sqlalchemy.orm import Session
from sqlalchemy import asc
from app.model.bussiness_model import ProjectImage as piModel
from app.model.schemas.project_image_schemas import ProjectImage, ProjectImagePager
from app.db.page_util import get_pager
def get_image_pager(image: ProjectImagePager, session: Session):
query = session.query(piModel).filter(piModel.project_id == image.project_id).order_by(asc(piModel.id))
pager = get_pager(query, image.pagerNum, image.pagerSize)
pager.data = [ProjectImage.from_orm(image) for image in pager.data]
return pager
def get_image_list(image: ProjectImage, session: Session):
query = session.query(piModel).filter(piModel.project_id == image.project_id).order_by(asc(piModel.id))
image_list = [ProjectImage.from_orm(image) for image in query.all()]
return image_list
def add_image(image: ProjectImage, session: Session):
session.add(image)
session.commit()
return image
def del_image(id: str, session: Session):
row_del = session.query(piModel).filter_by(id=id).delete()
session.commit()
return row_del

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@ -0,0 +1,42 @@
from sqlalchemy.orm import Session
from sqlalchemy import desc
from app.model.bussiness_model import ProjectInfo
from app.model.schemas.project_info_schemas import ProjectInfoOut
from app.model.schemas.project_info_schemas import ProjectInfoPager
from app.db.page_util import get_pager
def get_project_pager(info: ProjectInfoPager, session: Session):
"""分页查询项目信息"""
query = session.query(ProjectInfo).order_by(desc(ProjectInfo.id))
filters = []
if info.project_name is not None:
filters.append(ProjectInfo.project_name.ilike(f"%{info.project_name}%"))
if len(filters) > 0:
query.filter(*filters)
pager = get_pager(query, info.pagerNum, info.pagerSize)
pager.data = [ProjectInfoOut.from_orm(info).dict() for info in pager.data]
return pager
def get_project_by_id(id: str, session: Session):
info = session.query(ProjectInfo).filter_by(id=id).first()
info_out = ProjectInfoOut.from_orm(info)
return info_out
def add_project(info: ProjectInfo, session: Session):
"""新建项目,并在对应文件夹下面创建文件夹"""
session.add(info)
session.commit()
return info
def check_project_name(project_name: str, session: Session):
"""检验是否存在重名的项目名称"""
count = session.query(ProjectInfo).filter(ProjectInfo.project_name == project_name).count()
if count > 0:
return True
else:
return False

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@ -0,0 +1,72 @@
from sqlalchemy.orm import Session
from app.model.bussiness_model import ProjectLabel as plModel
from app.model.schemas.project_label_schemas import ProjectLabel
def get_label_list(project_id: int, session: Session):
"""
根绝项目id获取标签列表
:param project_id: 项目id
:param session:
:return:
"""
label_list = session.query(plModel).filter(plModel.project_id == project_id).all()
label_list = [ProjectLabel.from_orm(label) for label in label_list]
return label_list
def add_label(label: plModel, session: Session):
"""
新增标签
:param label:
:param session:
:return:
"""
session.add(label)
session.commit()
return label.id
def check_label_name(project_id: int, label_name: str, session: Session, label_id: int = None):
"""
检验标签名称是否存在
:param label_id:
:param project_id: 项目id
:param label_name: 标签名称
:param session:
:return:
"""
query = session.query(plModel)
filters = [plModel.project_id == project_id, plModel.label_name == label_name]
if label_id is not None:
filters.append(plModel.id != label_id)
query.filter(*filters)
if query.count() > 0:
return False
else:
return True
def update_label(label: plModel, session: Session):
"""
修改标签名称
:param label:
:param session:
:return:
"""
session.query(plModel).filter_by(id=label.id).update({
"label_name": label.label_name
})
session.commit()
def del_label(id: str, session: Session):
"""
根据标签id删除标签
:param id: 标签id
:param session:
:return:
"""
row_del = session.query(plModel).filter_by(id=id).delete()
return row_del

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@ -0,0 +1,13 @@
from app.model.bussiness_model import ProjectType
from app.model.schemas.project_type_schemas import ProjectTypeOut
from sqlalchemy import asc
from sqlalchemy.orm import Session
def get_list(session: Session):
"""获取项目类型列表"""
query = session.query(ProjectType).order_by(asc(ProjectType.id))
query.filter(ProjectType.type_status == "0")
result_list = [ProjectTypeOut.from_orm(project_type).dict() for project_type in query.all()]
return result_list

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@ -1,23 +1,21 @@
from app.model.model import SysUser
from app.model.sys_model import SysUser
from app.model.schemas.sys_user_schemas import SysUserPager, SysUserOut
from app.common.bcrypt_pw import hash_password
from app.db.page_util import get_pager
from sqlalchemy import and_, desc
from sqlalchemy import and_, asc
from sqlalchemy.orm import Session
def user_pager(user: SysUserPager, session: Session):
query = session.query(SysUser).order_by(desc(SysUser.id))
query = session.query(SysUser).order_by(asc(SysUser.id))
filters = []
if user.username is not None:
filters.append(SysUser.username.ilike(f"%{user.username}%"))
if user.dept_id is not None:
filters.append(SysUser.dept_id == user.dept_id)
if len(filters) > 0:
query.filter(and_(*filters))
pager = get_pager(query, user.pagerNum, user.pagerSize)
pager.data = [SysUserOut.from_orm(user) for user in pager.data]
pager.data = [SysUserOut.from_orm(user).dict() for user in pager.data]
return pager
@ -35,13 +33,13 @@ def get_user_by_id(id: int, session: Session):
def stop_user(user: SysUser, session: Session):
user.user_status = "1"
session.commit();
session.commit()
return user
def start_user(user: SysUser, session: Session):
user.user_status = "0"
session.commit();
session.commit()
return user

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@ -1,29 +0,0 @@
from app.db.db_base import DbCommon
from sqlalchemy import String,Integer
from sqlalchemy.orm import Mapped, mapped_column
class SysUser(DbCommon):
__tablename__ = "sys_user"
username: Mapped[str] = mapped_column(String(50), unique=True, nullable=False)
password: Mapped[str] = mapped_column(String(255))
dept_id: Mapped[int] = mapped_column(Integer)
login_name: Mapped[str] = mapped_column(String(255))
avatar: Mapped[str] = mapped_column(String(255))
user_status: Mapped[str] = mapped_column(String(10))
def keys(self):
keys = ["username", "password", "dept_id", "login_name", "avatar", "user_status"]
keys.extend(super().keys())
return keys
def __getitem__(self, item):
'''
内置方法, 当使用obj['name']的形式的时候, 将调用这个方法, 这里返回的结果就是值
:param item:
:return:
'''
return getattr(self, item, None)

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@ -0,0 +1,15 @@
from pydantic import BaseModel, Field
from typing import Optional
class ProjectImage(BaseModel):
id: Optional[int] = Field(None, description="id")
project_id: Optional[int] = Field(..., description="项目id")
image_url: Optional[str] = Field(..., description="原图路径")
thumb_image_url: Optional[str] = Field(..., description="缩略图路径")
class ProjectImagePager(BaseModel):
project_id: Optional[int] = Field(..., description="项目id")
pagerNum: Optional[int] = Field(1, description="当前页码")
pagerSize: Optional[int] = Field(10, description="每页数量")

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@ -0,0 +1,32 @@
from pydantic import BaseModel, Field
from typing import Optional
class ProjectInfoIn(BaseModel):
"""项目信息输入"""
id: Optional[int] = Field(None, description="项目id")
project_name: Optional[str] = Field(..., description="项目名称")
type_code: Optional[str] = Field(..., description="项目类型编码")
description: Optional[str] = Field(None, description="项目描述")
class ProjectInfoOut(BaseModel):
"""项目信息输出"""
id: Optional[int] = Field(None, description="项目id")
project_no: Optional[str] = Field(..., description="项目编号")
project_name: Optional[str] = Field(..., description="项目名称")
type_code: Optional[str] = Field(..., description="项目类型编码")
description: Optional[str] = Field(None, description="项目描述")
user_name: Optional[str] = Field(None, description="创建人")
train_version: Optional[int] = Field(None, description="训练版本号")
project_status: Optional[str] = Field(None, description="项目状态")
class Config:
orm_mode = True
class ProjectInfoPager(BaseModel):
project_name: Optional[str] = Field(None, description="项目名称")
pagerNum: Optional[int] = Field(1, description="当前页码")
pagerSize: Optional[int] = Field(10, description="每页数量")

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@ -0,0 +1,12 @@
from pydantic import BaseModel, Field
from typing import Optional
class ProjectLabel(BaseModel):
"""项目标签输入输出"""
id: Optional[int] = Field(None, description="id")
project_id: Optional[int] = Field(..., description="项目id")
label_name: Optional[str] = Field(..., description="标签名称")
class Config:
orm_mode = True

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@ -0,0 +1,26 @@
from pydantic import BaseModel, Field
from typing import Optional
class ProjectTypeIn(BaseModel):
"""
项目类型输入
"""
type_code: Optional[str] = Field(..., description="类型code", max_length=20)
type_name: Optional[str] = Field(..., description="类型名称", max_length=20, min_length=4)
icon_path: Optional[str] = Field(None, description="iconPath", max_length=255)
description: Optional[str] = Field(None, description="类型描述", max_length=255)
class ProjectTypeOut(BaseModel):
"""
项目类型输出
"""
id: Optional[int] = Field(..., description="id")
type_code: Optional[str] = Field(..., description="类型code", max_length=20)
type_name: Optional[str] = Field(..., description="类型名称", max_length=20, min_length=4)
icon_path: Optional[str] = Field(None, description="iconPath", max_length=255)
description: Optional[str] = Field(None, description="类型描述", max_length=255)
class Config:
orm_mode = True

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@ -3,10 +3,9 @@ from typing import Optional
# 用户相关的原型
class SysUserIN(BaseModel):
class SysUserIn(BaseModel):
username: Optional[str] = Field(..., description="用户名", max_length=50)
password: Optional[str] = Field(..., description="密码", max_length=30, min_length=6)
dept_id: Optional[str] = Field(None, description="部门id")
login_name: Optional[str] = Field(None, description="昵称", max_length=20)
@ -18,9 +17,8 @@ class SysUserLogin(BaseModel):
class SysUserOut(BaseModel):
id: Optional[int] = Field(..., description="id")
username: Optional[str] = Field(..., description="用户名")
dept_id: Optional[str] = Field(None, description="部门id")
dept_name: Optional[str] = Field(None, description="部门名称")
login_name: Optional[str] = Field(None, description="昵称")
user_status: Optional[str] = Field(None, description="用户状态")
class Config:
orm_mode = True
@ -34,7 +32,6 @@ class SysUserUpdatePw(BaseModel):
class SysUserPager(BaseModel):
username: Optional[str] = Field(None, description="用户名")
dept_id: Optional[str] = Field(None, description="部门id")
login_name: Optional[str] = Field(None, description="昵称")
pagerNum: Optional[int] = Field(1, description="当前页码")
pagerSize: Optional[int] = Field(10, description="每页数量")

15
app/model/sys_model.py Normal file
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@ -0,0 +1,15 @@
from app.db.db_base import DbCommon
from sqlalchemy import String
from sqlalchemy.orm import Mapped, mapped_column
class SysUser(DbCommon):
"""
用户表 - 保存用户基本信息
"""
__tablename__ = "sys_user"
username: Mapped[str] = mapped_column(String(50), unique=True, nullable=False)
password: Mapped[str] = mapped_column(String(255))
login_name: Mapped[str] = mapped_column(String(255))
avatar: Mapped[str] = mapped_column(String(255))
user_status: Mapped[str] = mapped_column(String(10))

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from app.model.bussiness_model import ProjectImage
from app.model.schemas.project_info_schemas import ProjectInfoIn, ProjectInfoOut
from app.model.bussiness_model import ProjectInfo
from app.util import random_utils as ru
from app.config.config_reader import datasets_url, runs_url, images_url
from app.model.crud import project_info_crud as pic
from app.util import os_utils as os
from sqlalchemy.orm import Session
from typing import List
from fastapi import UploadFile
def add_project(info: ProjectInfoIn, session: Session, user_id: int):
"""
新建项目,完善数据,并创建对应的文件夹
:param info: 项目信息
:param session: 数据库session
:param user_id: 用户id
:return:
"""
project_info = ProjectInfo(**info.dict())
project_info.user_id = user_id
project_info.project_no = ru.random_str(6)
project_info.project_status = "0"
project_info.train_version = 0
os.create_folder(datasets_url, project_info.project_no)
os.create_folder(runs_url, project_info.project_no)
pic.add_project(project_info, session)
return project_info
def upload_project_image(session: Session, project_info: ProjectInfoOut, files: List[UploadFile]):
"""
上传项目的图片
:param files: 上传的图片
:param project_info: 项目信息
:param image:
:param session:
:return:
"""
for file in files:
image = ProjectImage()
image.project_id = project_info.id
# 保存原图
path = os.save_images(images_url, project_info.project_no, file=file)
image.image_url = path

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app/util/os_utils.py Normal file
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import os
from fastapi import UploadFile
from PIL import Image
def create_folder(*path):
"""根据路径创建文件夹"""
folder_path = os.path.join(*path)
try:
os.makedirs(path, exist_ok=True)
except Exception as e:
print(f"创建文件夹时错误: {e}")
def save_images(*path, file: UploadFile):
"""
保存上传的图片
:param path: 路径
:param file: 文件
:return:
"""
save_path = os.path.join(*path, file.filename)
with open(save_path, "wb") as f:
for line in file.file:
f.write(line)
return save_path
def create_thumbnail(input_image_path, out_image_path, size=(116, 70)):
"""
给图片生成缩略图
:param input_image_path:
:param out_image_path:
:param size: 缩略的尺寸
:return:
"""
with Image.open(input_image_path) as image:
# 使用thumbnail方法生成缩略图参数size指定缩略图的最大尺寸
# 注意thumbnail方法会保持图片的宽高比不变
image.thumbnail(size)
# 保存生成的缩略图
image.save(out_image_path, 'JPEG')

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app/util/random_utils.py Normal file
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import random
import string
def random_str(length=10):
"""随机生成自定义长度的小写字母"""
letters = string.ascii_lowercase
# 使用 random.choices 从 letters 中随机选择 length 个字母,返回一个列表
random_letters = random.choices(letters, k=length)
# 将列表中的字母连接成一个字符串
return ''.join(random_letters)