fastapi-amis-admin快速创建一个后台管理系统增加音乐管理功能(3)

感觉为了实现maui的效果。准备了一个后端及restful项目 ，如同想吃鱼就健个鲁塘一下，但还是写一下吧。

fastapi_amis_admin 是一个功能强大的框架，旨在帮助开发者在使用 FastAPI 进行 web 开发时，能够快速创建一个高效且易于管理的后台界面。通过结合 FastAPI 和 amis 的优势，fastapi_amis_admin 提供了一种简洁而高效的方式来构建和管理 web 应用程序的后台。

主要特性：
高性能：基于 FastAPI，保证了高并发和快速响应的能力。
高效率：通过 amis 实现快速构建可视化界面，减少开发时间。
易于使用：基于标准的 Python 类型提示，简化开发流程。
开源免费：遵循 Apache2.0 协议，鼓励社区参与和贡献。
具体用法：

1. 安装：
   首先，确保你的 Python 版本是 3.6 或更高。然后，使用 pip 进行安装：

bash
pip install fastapi_amis_admin
2. 创建 FastAPI 应用：
如果你还没有一个 FastAPI 项目，可以先创建一个：

python
from fastapi import FastAPI
app = FastAPI()
3. 定义你的数据模型：
例如，如果你有一个用户模型：

python
from pydantic import BaseModel
class User(BaseModel):
id: int
name: str
email: str
4. 使用 fastapi_amis_admin 快速生成管理后台：
python
from fastapi_amis_admin import AdminSite, ModelAdmin
from your_models import User # 引入你刚定义的数据模型

admin_site = AdminSite(app) # 创建一个 AdminSite 实例

注册你的数据模型到 AdminSite 中

admin_site.register(ModelAdmin(User))
5. 启动你的 FastAPI 应用：
使用 UVicorn 或其他你喜欢的 ASGI 服务器来运行你的应用。例如，使用 UVicorn：

bash
uvicorn main:app --reload # ‘main’ 是你的主模块名，‘app’ 是你的 FastAPI 实例名
6. 访问管理后台：
默认情况下，后台管理界面会在 /admin 路径下生成。你可以在浏览器中访问 http://localhost:8000/admin 来查看和使用管理后台。使用你定义的模型名称（例如，“User”）作为菜单项来管理相应的数据。

pip install fastapi_amis_admin[cli]
pip install pydantic[dotenv]

# View help
faa --help

# Initialize a `FastAPI-Amis-Admin` project
faa new music --init

# Initialize a `FastAPI-Amis-Admin` application
faa new music 

# Fast running project
faa run

再回顾：

uvicorn>=0.18.3
pydantic[dotenv]>=1.9.0
aiosqlite>=0.17.0
fastapi-amis-admin>=0.5.0,<0.6.0
fastapi-user-auth>=0.5.0,<0.6.0
fastapi-scheduler>=0.0.6,<0.1.0
aiomysql
fastapi-config
aioredis
celery
flower

在这里我们让项目支持redis 以及rabbitmq

##创建一个项目如下图：

##rabbitmq的配置：

#!/usr/bin/python3
# !--*-- coding: utf-8 --*--
import time

from celery import Celery
from celery.utils.log import get_task_logger

# 实例化 Celery
celery = Celery('tasks', broker='amqp://wanghaibin:wanghaibin@127.0.0.1:5672//')

# 创建 logger，以显示日志信息
celery_log = get_task_logger(__name__)


# 创建任务函数，以订单(Order) 为例，异步进行
@celery.task
def create_order(name, quantity):
    # 5 seconds per 1 order
    complete_time_per_item = 5

    # Keep increasing depending on item quantity being ordered
    time.sleep(complete_time_per_item * quantity)
    # 显示日志
    celery_log.info(f"Order Complete!")
    return {"message": f"Hi {name}, Your order has completed!",
            "order_quantity": quantity}

#!/usr/bin/python3
#!--*-- coding: utf-8 --*--
from pydantic import BaseModel

# Pydantic BaseModel
# Order class model for request body
class Order(BaseModel):
    customer_name: str
    order_quantity: int

##再看music

models.py创建了表：

from datetime import datetime
from typing import List, Optional
import sqlmodel
from fastapi_amis_admin.amis.components import ColumnImage, InputImage, InputRichText
from fastapi_amis_admin.models.enums import IntegerChoices
from fastapi_amis_admin.models.fields import Field
from fastapi_user_auth.auth.models import PkMixin, User
from sqlalchemy import Column, String, select
from sqlalchemy.orm import Session


class ArticleStatus(IntegerChoices):
    unpublished = 0, "未发布"
    published = 1, "已发布"
    inspection = 2, "审核中"
    disabled = 3, "已禁用"


class Category(PkMixin, table=True):
    __tablename__ = "category"
    name: str = Field(title="歌曲分类名", sa_column=Column(String(100), unique=True, index=True, nullable=False))
    description: str = Field(default="", title="描述", amis_form_item="textarea")
    status: bool = Field(False, title="状态")
    articles: List["Article"] = sqlmodel.Relationship(back_populates="category")


class ArticleTagLink(sqlmodel.SQLModel, table=True):
    __tablename__ = "music_tags"
    tag_id: Optional[int] = Field(default=None, foreign_key="tag.id", primary_key=True)
    music_id: Optional[int] = Field(default=None, foreign_key="article.id", primary_key=True)


class Tag(PkMixin, table=True):
    __tablename__ = "tag"
    name: str = Field(..., title="标签名", sa_column=Column(String(255), unique=True, index=True, nullable=False))
    articles: List["Article"] = sqlmodel.Relationship(back_populates="tags", link_model=ArticleTagLink)


class Article(PkMixin, table=True):
    __tablename__ = "article"
    title: str = Field(title="歌曲名", max_length=200)
    img: str = Field(
        None,
        title="图片",
        max_length=300,
        amis_form_item=InputImage(maxLength=1, maxSize=2 * 1024 * 1024, receiver="post:/admin/file/upload"),
        amis_table_column=ColumnImage(width=100, height=60, enlargeAble=True),
    )
    url: str = Field(default="", title="mp3 url", amis_form_item="textarea")
    status: ArticleStatus = Field(ArticleStatus.unpublished, title="status")
    content: str = Field(..., title="说明", amis_form_item=InputRichText())
    create_time: Optional[datetime] = Field(default_factory=datetime.utcnow, title="增加时间")
    source: str = Field(default="", title="来源", max_length=200)
    category_id: Optional[int] = Field(default=None, foreign_key="category.id", title="分类")
    category: Optional[Category] = sqlmodel.Relationship(back_populates="articles")
    tags: List[Tag] = sqlmodel.Relationship(back_populates="articles", link_model=ArticleTagLink)
    user_id: int = Field(default=None, foreign_key="auth_user.id", title="用户")
    user: User = sqlmodel.Relationship()

    @staticmethod
    def check_update_permission(session: Session, user: User, item_id: List[str]):
        # 管理员可以修改全部文章, 并且可以批量修改.
        if user.has_requires(session, roles=["admin"]):
            return True
        # 非管理员,只能修改自己的文章,并且不可批量修改.
        if len(item_id) > 1:
            return False
        stmt = select(1).where(Article.id == item_id[0], Article.user_id == user.id)
        return bool(session.scalar(stmt))

admin.py表现的是菜单的链接

from datetime import datetime, timedelta
from typing import Any, Dict, List

from apps.music.models import Article, Category, Tag
from core.adminsite import site
from fastapi_amis_admin import admin
from fastapi_amis_admin.admin import AdminApp, PageSchemaAdmin
from fastapi_amis_admin.amis.components import PageSchema, TableColumn
from fastapi_amis_admin.crud.parser import LabelField, PropertyField
from fastapi_amis_admin.crud.schema import Paginator
from fastapi_amis_admin.models import Field
from fastapi_user_auth.auth.models import User
from pydantic import BaseModel
from sqlmodel.sql.expression import Select
from starlette.requests import Request


@site.register_admin
class BlogApp(admin.AdminApp):
    page_schema = PageSchema(label="音乐管理", icon="fa fa-calculator")
    router_prefix = "/music"

    def __init__(self, app: "AdminApp"):
        super().__init__(app)
        self.register_admin(ArticleAdmin,CategoryAdmin, TagAdmin)


class CategoryAdmin(admin.ModelAdmin):
    page_schema = PageSchema(label="音乐分类管理", icon="fa fa-folder")
    model = Category
    search_fields = [Category.name]


class TagAdmin(admin.ModelAdmin):
    page_schema = PageSchema(label="音乐标签管理", icon="fa fa-tags")
    model = Tag
    search_fields = [Tag.name]
    link_model_fields = [Tag.articles]


class ArticleAdmin(admin.ModelAdmin):
    page_schema = PageSchema(label="音乐管理", icon="fa fa-file")
    model = Article
    # 配置列表展示字段
    list_display = [
        #TableColumn(type="tpl", label="自定义模板列", tpl='<a href="${source}" target="_blank">ID:${id},Title:${title}</a>'),
        Article.id,
        Article.title.label("歌名"),
        Article.img,
        Category.name,
        User.username,
        Article.create_time,
        Article.url,
        User.nickname.label("昵称"),  # 重命名字段;也可以使用sqlalchemy函数, 例如:
        #func.count('*').label('music_count'), #注意在`get_select`中修改对应的sql查询语句
        LabelField(
            User.nickname.label("nickname2"),
            Field("默认用户", title="发布者"),  # 通过Field配置Amis表格列信息,Amis表单字段信息.
        ),
    ]
    # 配置模糊搜索字段
    search_fields = [Article.title, Category.name, User.username]
    # 配置关联模型
    link_model_fields = [Article.tags]
    # 读取查看表单字段
    read_fields = [
        Article,
        PropertyField(name="category", type_=Category),
        PropertyField(name="user", type_=User),
        PropertyField(name="tags", type_=List[Tag]),
    ]

    # 自定义查询选择器
    async def get_select(self, request: Request) -> Select:
        sel = await super().get_select(request)
        return sel.join(Category, isouter=True).join(User, isouter=True)

    # 权限验证
    async def has_page_permission(self, request: Request, obj: PageSchemaAdmin = None, action: str = None) -> bool:
        return True

    async def has_list_permission(self, request: Request, paginator: Paginator, filters: BaseModel = None, **kwargs) -> bool:
        # 用户未登录,不可按标题过滤文章,并且最多每页最多只能查看10条数据.
        return bool(await self.site.auth.requires(response=False)(request) or (paginator.perPage <= 10 and filters.title == ""))

    async def has_create_permission(self, request: Request, data: BaseModel, **kwargs) -> bool:
        # 用户已登录,并且注册时间大于3天,才可以发布文章
        return bool(
            await self.site.auth.requires(response=False)(request)
            and request.user.create_time < datetime.now() - timedelta(days=3)
        ) or await self.site.auth.requires(roles="admin", response=False)(request)

    async def has_delete_permission(self, request: Request, item_id: List[str], **kwargs) -> bool:
        # 必须管理员才可以删除文章.
        return await self.site.auth.requires(roles="admin", response=False)(request)

    async def has_update_permission(self, request: Request, item_id: List[str], data: BaseModel, **kwargs) -> bool:
        if not await self.site.auth.requires(response=False)(request):
            return False
        if item_id is None:
            return True
        return await self.site.db.async_run_sync(Article.check_update_permission, request.user, item_id)

    async def on_create_pre(self, request: Request, obj: BaseModel, **kwargs) -> Dict[str, Any]:
        data = await super().on_create_pre(request, obj, **kwargs)
        # 创建新文章时,设置当前用户为发布者
        data["user_id"] = request.user.id
        return data

main.py代码：

from starlette.responses import RedirectResponse
from fastapi import FastAPI
from core.adminsite import site
from core.settings import settings
from sqlmodel import SQLModel
from aioredis import create_redis_pool, Redis
from apps.rabbitmq.model import Order
from apps.rabbitmq.celery_worker import create_order
app = FastAPI(debug=settings.debug)
# 安装应用
from apps import admin
admin.setup(app.router, site)
# 安装应用blog
from apps import music
music.setup(app)

from apps import siteconfig
siteconfig.setup(app)

# from apps import project
# project.setup(app)
# 挂载后台管理系统
site.mount_app(app)


@app.get('/')
async def index():
    return RedirectResponse(url=site.router_path)


@app.on_event("startup")
async def startup():
    from core.adminsite import auth
    await site.db.async_run_sync(SQLModel.metadata.create_all, is_session=False)
    await auth.create_role_user('admin')
    app.state.redis = await get_redis_pool()
    from core.adminsite import scheduler
    scheduler.start()

async def get_redis_pool() -> Redis: #redis
    redis = await create_redis_pool(f"redis://:@127.0.0.1:6379/0?encoding=utf-8")
    return redis

@app.on_event("shutdown")
async def shutdown_event():
    app.state.redis.close()
    await app.state.redis.wait_closed()

@app.post('/order')
def add_order(order: Order):
    create_order.delay(order.customer_name, order.order_quantity)
    return {"message": "Order Received! Thank you for your patience."}

这里还有一个core的目录。主要是解决数据据的配置

setting.py

import os
from pathlib import Path
from typing import List

from fastapi_amis_admin.admin.settings import Settings as AmisSettings

BASE_DIR = Path(__file__).resolve().parent.parent


class Settings(AmisSettings):
    name: str = 'JJSOS'
    host: str = '127.0.0.1'
    port: int = 7555
    secret_key: str = 'ssswessss'
    allow_origins: List[str] = None


settings = Settings(_env_file=os.path.join(BASE_DIR, '.env'))

adminsite.py

from core.settings import settings
from fastapi_user_auth.site import AuthAdminSite
site = AuthAdminSite(settings)
auth = site.auth
from fastapi_scheduler import SchedulerAdmin
scheduler = SchedulerAdmin.bind(site)

界面：