【RN+react+koa2+mongodb实战随笔】4.API和C层逻辑

上回设计了路由,,已经搭好了架构,下面就要进行业务逻辑的实施了。

业务逻辑部分

用户类

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const mongoose = require('mongoose');
const UserModel = mongoose.model('User');
const SupplierModel = mongoose.model('Supplier');
const utils = require('../../utils')
const Data = utils.data()
class userController {

static async signIn(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.username || !body.password) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const userdoc = await UserModel.findOne({username: body.username});
if (!userdoc) {
const supplierdoc = await SupplierModel.findOne({username: body.username});
if (!supplierdoc) {
obj = {
message: 'signIn failed, user nothing'
}
} else {
obj = {
message: 'signIn success',
useruuid: utils.setUuid(supplierdoc._id, 2)
}
}
} else {
if (userdoc.password == body.password) {
obj = {
message: 'signIn success',
useruuid: utils.setUuid(userdoc._id, 1)
}
} else {
obj = {
message: 'signIn failed, password error'
}
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async signUp(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.username || !body.password || !body.userphone || !body.nickname || !body.userType || body.userType === '系统管理员') {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
let userType = await Data.userTypes.indexOf(body.userType);
switch (userType) {
case 1:
const userdoc = await UserModel.create(body);
obj = {
message: 'signUp success'
}
break;
case 2:
const supplierdoc = await SupplierModel.create(body);
obj = {
message: 'signUp success'
}
break;
default:
obj = {
message: 'user type nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async getUserInfo(ctx, next) {
if (!ctx.params.useruuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(ctx.params.useruuid)[0]
const userType = await parseInt(utils.getUuid(ctx.params.useruuid)[1])
switch (userType) {
case 1:
const userdoc = await UserModel.findOne({
_id: useruuid
}, {
password: 0,
_id: 0
});
obj = JSON.stringify(userdoc);
break;
case 2:
const supplierdoc = await SupplierModel.findOne({
_id: useruuid
}, {
password: 0,
_id: 0
});
obj = JSON.stringify(supplierdoc);
break;
default:
obj = {
message: 'user nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async setUserInfo(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.useruuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(body.useruuid)[0]
const userType = await parseInt(utils.getUuid(body.useruuid)[1])
switch (userType) {
case 1:
const userdoc = await UserModel.update({
_id: useruuid
}, body);
obj = {
message: 'setUserInfo success'
};
break;
case 2:
const supplierdoc = await SupplierModel.update({
_id: useruuid
}, body);
obj = {
message: 'setUserInfo success'
};
break;
default:
obj = {
message: 'user nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
}
module.exports = userController;

订单类

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const mongoose = require('mongoose');
const UserModel = mongoose.model('User');
const OrderModel = mongoose.model('Order');
const utils = require('../../utils')
const Data = utils.data()

class orderController {
static async getOrder(ctx, next) {
const params = await utils.getParams(ctx.params);
if (!params.useruuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
if (!params.orderuuid) {
const useruuid = await utils.getUuid(params.useruuid)[0]
const getuserdoc = await UserModel.findOne({
_id: useruuid
}, {password: 0}).populate('orders', {_id: 0});
obj = JSON.stringify(getuserdoc.orders)
} else {
const getorderdoc = await OrderModel
.findOne({_id: params.orderuuid})
.populate('goods', {_id: 0});
obj = JSON.stringify(getorderdoc)
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
// 算钱的
static async addOrder(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.goods) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(body.useruuid)[0]
let userType = await parseInt(utils.getUuid(body.useruuid)[1])
let orderTotal = 0;
for (let i = 0; i < body.goods.length; i++) {
orderTotal += body.goods[i].goodsPrice * body.goods[i].goodsNumber
}
body.orderTotal = orderTotal; // 订单总价
body.actuaPayment = orderTotal; // 实付款
switch (userType) {
case 1:
obj = JSON.stringify(body);
break;
default:
obj = {
message: 'user type nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
// 提交订单的
static async saveOrder(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.goods) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(body.useruuid)[0]
let userType = await parseInt(utils.getUuid(body.useruuid)[1])
body.orderState = 0 // 订单状态
body.createTime = new Date(); // 订单创建时间
switch (userType) {
case 1:
const orderdoc = await OrderModel.create(body);
const updateuserdoc = await UserModel.update({
_id: useruuid
}, {
'$push': {
'orders': orderdoc.id
}
});
obj = {
message: 'saveOrder success'
}
break;
default:
obj = {
message: 'user type nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async removeOrder(ctx, next) {
const params = await utils.getParams(ctx.params);
const getorderdoc = await OrderModel.findOne({_id: params.orderuuid})
if (!params.useruuid || !params.orderuuid || !getorderdoc) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(params.useruuid)[0]
const orderdoc = await OrderModel.remove({_id: params.orderuuid});
const updateuserdoc = await UserModel.update({
_id: useruuid
}, {
'$pull': {
'orders': params.orderuuid
}
});
obj = {
message: 'saveOrder success'
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
}
module.exports = orderController;

购物车类

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const mongoose = require('mongoose');
const ShoppingCartModel = mongoose.model('ShoppingCart');
const UserModel = mongoose.model('User');
const utils = require('../../utils')
const Data = utils.data()

class shoppingCartController {
static async getGoods(ctx, next) {
const params = await utils.getParams(ctx.params);
if (!params.useruuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(params.useruuid)[0]
let userType = await parseInt(utils.getUuid(params.useruuid)[1])
switch (userType) {
case 1:
const doc = await UserModel.findOne({
_id: useruuid
}, {
password: 0,
_id: 0
}).populate('shoppingCart');
obj = JSON.stringify(doc.shoppingCart);
break;
default:
obj = {
message: 'user type nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async addGoods(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.goods) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(body.useruuid)[0]
let userType = await parseInt(utils.getUuid(body.useruuid)[1])
switch (userType) {
case 1:
const getuserdoc = await UserModel.findOne({_id: useruuid});
if (getuserdoc.shoppingCart.length < 100) {
const ShoppingCartdoc = await ShoppingCartModel.create(body.goods)
const updateuserdoc = await UserModel.update({
_id: useruuid
}, {
'$push': {
'shoppingCart': ShoppingCartdoc.id
}
});
} else {
await ShoppingCartModel.remove({_id: getuserdoc.shoppingCart[0]})
const ShoppingCartdoc = await ShoppingCartModel.create(body.goods)
await UserModel.update({
_id: useruuid
}, {
'$pull': {
'shoppingCart': getuserdoc.shoppingCart[0]
}
});
await UserModel.update({
_id: useruuid
}, {
'$push': {
'shoppingCart': ShoppingCartdoc.id
}
});
}
obj = {
message: 'addGoods success'
}
break;
default:
obj = {
message: 'user type nothing~'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async editGoods(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.useruuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
for (let i = 0; i < body.goods.length; i++) {
await ShoppingCartModel.update({
_id: body.goods[i].shoppingCartId
}, body.goods[i]);
}
obj = {
message: 'editGoods success'
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async removeGoods(ctx, next) {
const body = await utils.getParams(ctx.request.body);
const getgoodsdoc = await ShoppingCartModel.find({
'_id': {
$in: body.goodsuuids
}
})
if (!body.goodsuuids || !getgoodsdoc || getgoodsdoc.length === 0 || !body.useruuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const useruuid = await utils.getUuid(body.useruuid)[0]
let userType = await parseInt(utils.getUuid(body.useruuid)[1])
const userdoc = await UserModel.update({
_id: useruuid
}, {
'$pull': {
'shoppingCart': body.goodsuuids
}
});
const ShoppingCartdoc = await ShoppingCartModel.remove({
'_id': {
$in: body.goodsuuids
}
});
obj = {
message: 'removeGoods success'
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
}
module.exports = shoppingCartController;

商品类

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const mongoose = require('mongoose');
const GoodsModel = mongoose.model('Goods');
const utils = require('../../utils')
const Data = utils.data()

class goodsController {
static async getGoodsList(ctx, next) {
if (!ctx.request.query.currentPage || !ctx.request.query.pageSize) {
return next(ctx.throw(400, 'params error'));
}
const currentPage = parseInt(ctx.request.query.currentPage)
const pageSize = parseInt(ctx.request.query.pageSize);
let obj = null;
try {
const query = await utils.getParams(ctx.request.query);
const doc = await GoodsModel
.find(query)
.populate('goodsAttrs', {_id: 0})
.populate('supplier', {
password: 0,
_id: 0,
editTime: 0
})
.skip((currentPage - 1) * pageSize)
.limit(pageSize)
.sort({'_id': -1})
.exec();
const total = await GoodsModel.count();
obj = JSON.stringify({data: doc, currentPage: currentPage, pageSize: pageSize, pageTotal: total})
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async getGoods(ctx, next) {
if (!ctx.params.goodsuuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const doc = await GoodsModel.findOne({
_id: ctx.params.goodsuuid
}, {
password: 0,
_id: 0
})
.populate('goodsAttrs', {_id: 0})
.populate('supplier', {
_id: 0,
password: 0,
editTime: 0
});
obj = JSON.stringify(doc)
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async addGoods(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.goodsName || !body.goodsSummary || !body.goodsImg || !body.goodsPrice || !body.goodsType || !body.goodsStock || !body.goodsAttrs || !body.supplier) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
let userType = await parseInt(utils.getUuid(body.supplier)[1])
body.supplier = await utils.getUuid(body.supplier)[0]
if (userType === 2) {
const doc = await GoodsModel.create(body);
obj = {
message: 'addGoods success'
}
} else {
obj = {
message: 'userType error'
}
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async editGoods(ctx, next) {
const body = await utils.getParams(ctx.request.body);
if (!body.goodsuuid) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const doc = await GoodsModel.update({
_id: body.goodsuuid
}, body);
obj = {
message: 'editGoods success'
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
static async removeGoods(ctx, next) {
const body = await utils.getParams(ctx.request.body);
const getgoodsdoc = await GoodsModel.find({
'_id': {
$in: body.goodsuuids
}
})
if (!body.goodsuuids || !getgoodsdoc) {
return next(ctx.throw(400, 'params error'));
}
let obj = null;
try {
const doc = await GoodsModel.remove({
'_id': {
$in: body.goodsuuids
}
});
obj = {
message: 'removeGoods success'
}
} catch (error) {
console.log(error)
obj = {
error: error,
msg: 'server error'
};
}
ctx.body = obj
}
}
module.exports = goodsController;

server端完结感言

反正真的是不容易,从10号开始陆陆续续,一共十八个api,,写了十八天。。各种查资料,问人,算是把逻辑部分的工程写法大概弄明白了。,剩下就是一些规范和联调部分。后续会随着移动端和pc浏览器端的进展进行项目更新的。

PS:这篇文章发的早。现在已经是七夕了。。

项目链接

https://github.com/shifeng1993/mongo-server

本文作者: haise
本文地址https://www.shifeng1993.com/2017/10/14/rn_react_koa2_mongodb_api2/
版权声明: 转载请注明出处!