|
使用场景为,在js中连续的几个异步耗时操作,后面的耗时操作需要使用第一个操作的返回结果。例如调用ajax异步接口,需要先创建完主表,然后拿到主表id在去循环创建明细表,等全部创建完成后,弹出提示来,或者失败提示。通常情况,在耗时操作完成后在去调用,需要将异步方法转成同步方法,结合回调函数,像ajax请求可以直接设置为同步,然后再调用完成的回调函数里继续去调用另一个逻辑代码,但这样就会导致代码嵌套比较多,不易拓展和维护,使用Promise.all可以减少代码里的不断嵌套,直接上代码,具体的一看代码就明白了,promise的使用有单独的笔记整理。- 1 QueryOrderInfo(orderId).then((orderResult) => {
- 2 if (!orderResult.success) {
- 3 Xrm.Utility.alertDialog(`查询所选订单的信息及明细信息失败!【${orderResult.message}】`);
- 4 return
- 5 }
- 6 let shippingId = commonUtil.delBrackets(Xrm.Page.data.entity.getId())
- 7 let promiseArray = []
- 8 orderResult.details.forEach((p, idx) => {
- 9 promiseArray.push(CreateShippingOrderDetailPromise(p, orderResult.order, shippingId))
- 10 })
- 11 Promise.all(promiseArray).then((res) => {
- 12 console.log(res);
- 13 let failReqs = Object.entries(res).filter((a) => !(a[1].success))
- 14 if (failReqs.length) {
- 15 Xrm.Utility.alertDialog(failReqs.map(e => e[1].message).join('\n'))
- 16 }
- 17 window.top.location.reload()
- 18 })
- 19 }).catch((err) => { console.error(err) })
- 20
- 21
- 22 /**
- 23 * 根据整车订单id查询整车销售订单明细
- 24 * @param {any} orderId 整车订单数据id
- 25 */
- 26 function QueryOrderInfo(orderId) {
- 27 return new Promise((resolve, reject) => {
- 28 let queryPromises = [GetOrderInfo(orderId), GetOrderDetails(orderId)]
- 29 Promise.all(queryPromises).then((res) => {
- 30 let orderRes = res[0]
- 31 let detailRes = res[1]
- 32 resolve({
- 33 success: res.every(r => r.success),
- 34 message: (orderRes.success ? "" : `[${orderRes.message}]`) + (detailRes.success ? "" : `[${detailRes.message}]`),
- 35 order: orderRes.data,
- 36 details: detailRes.data
- 37 })
- 38 })
- 39 })
- 40 }
- 41 /**
- 42 * 通过销售订单ID查询销售订单的付款方式(new_paymentmethod)以及对应销售合同的合同号(new_sales_contract_number)
- 43 * @param {any} orderId
- 44 * @returns
- 45 */
- 46 function GetOrderInfo(orderId) {
- 47 return new Promise((resolve, reject) => {
- 48 let queryUrl = `/new_orders(${orderId})?$select=new_paymentmethod&$expand=new_sales_contractid($select=new_sales_contract_number)`
- 49 let result = { success: false, message: '未能正确查找', data: null }
- 50 commonUtil.queryWithUrl(queryUrl, function (res) {
- 51 if (!res) {
- 52 result.message = '查询销售订单信息异常,添加订舱信息反馈单明细失败!'
- 53 } else if (!res.success) {
- 54 result.message = res.message
- 55 } else if (res.data) {
- 56 result.success = true
- 57 result.data = {
- 58 new_paymentmethod: res.data["new_paymentmethod@OData.Community.Display.V1.FormattedValue"],
- 59 new_contractno: res.data.new_sales_contractid && res.data.new_sales_contractid.new_sales_contract_number
- 60 }
- 61 }
- 62 resolve(result)
- 63 }, false);
- 64 })
- 65 }
- 66
- 67 /**
- 68 * 根据销售订单ID查询相关的销售订单明细记录
- 69 * @param {any} orderId
- 70 * @returns
- 71 */
- 72 function GetOrderDetails(orderId) {
- 73 return new Promise((resolve, reject) => {
- 74 let selFields = 'new_count,new_name,new_order_detailid,new_expected_output_time,_new_product_fourthid_value,_new_way_of_packagingid_value'
- 75 let queryUrl = `/new_order_details?$select=${selFields}&$expand=new_way_of_packagingid($select=new_high,new_long,new_wide)&$filter=_new_order_value eq ${orderId}`
- 76 let result = { success: false, message: '未能正确查找', data: null }
- 77 commonUtil.queryWithUrl(queryUrl, function (obj) {
- 78 if (!obj) {
- 79 result.message = '查询销售订单明细异常,添加订舱信息反馈单明细失败!'
- 80 } else if (!obj.success) {
- 81 result.message = obj.message
- 82 } else if (obj.data && obj.data.length) {
- 83 result.success = true
- 84 result.data = obj.data
- 85 }
- 86 resolve(result)
- 87 }, false);
- 88 })
- 89 }
- 90
- 91
- 92 /**
- 93 * 根据销售订单明细创建反馈单明细记录
- 94 * @param {any} orderDetail 销售明细数据
- 95 */
- 96 function CreateShippingOrderDetailPromise(orderDetail, order,shippingId) {
- 97 return new Promise((resolve, reject) => {
- 98 //包装方式
- 99 var wayOfPackaging = orderDetail.new_way_of_packagingid
- 100 let shippingOrderDetail = {
- 101 "new_shipping_orderid_new_shipping_order@odata.bind": `/new_shipping_orders(${shippingId})`, // 订舱信息反馈单ID
- 102 "new_order_detailid@odata.bind": `/new_order_details(${orderDetail.new_order_detailid})`, // 整车销售订单明细
- 103 "new_productcode@odata.bind": `/new_product_fourths(${orderDetail._new_product_fourthid_value})`, // 产品代码
- 104 new_numberofsets: orderDetail.new_count, // 台数
- 105 new_timespan: new Date(orderDetail.new_expected_output_time).toISOString(), // 预计入库时间
- 106 new_paymentmethod: order.new_paymentmethod, // 付款方式
- 107 new_contractno: order.new_contractno, // 合同号
- 108 }
- 109 if (wayOfPackaging) {
- 110 //包装方式
- 111 shippingOrderDetail["new_way_of_packagingid@odata.bind"] = `/new_way_of_packagings(${orderDetail._new_way_of_packagingid_value})`
- 112 //单台长
- 113 shippingOrderDetail.new_singlelong = wayOfPackaging.new_long
- 114 //单台宽
- 115 shippingOrderDetail.new_singlelwide = wayOfPackaging.new_wide
- 116 //单台高
- 117 shippingOrderDetail.new_singlehigh = wayOfPackaging.new_high
- 118 }
- 119 Xrm.WebApi.createRecord("new_shipping_order_detail", shippingOrderDetail).then(
- 120 function success(result) {
- 121 resolve({ success: true })
- 122 },
- 123 function (error) {
- 124 resolve({ success: false, message: error.message })
- 125 }
- 126 );
- 127 })
- 128 }
复制代码 思路就是,将所有的异步耗时操作都封装成Promise对象返回,Promise可以将异步转成同步,在执行完成后结果返回到then中,然后使用Promise.all将promise对象数组一起执行,全部执行完成后再统一返回信息。
来源:https://www.cnblogs.com/adingfirstlove/p/17541177.html
免责声明:由于采集信息均来自互联网,如果侵犯了您的权益,请联系我们【E-Mail:cb@itdo.tech】 我们会及时删除侵权内容,谢谢合作! |
|