routefilter.emb
Version:
路由过滤中间件 ，注入在 request 一组 过滤器。可实现请求过滤器，和在过滤器中实现请求和返回，实现RMVC中把请求脱离出去
104 lines (83 loc) • 2.87 kB
JavaScript
function registerFilter(filterObject, isPromise = false) {
function fn(req, res, next) {
/// 过滤器对象
let filter = {}
// 如果是数组进行遍历
if (filterObject instanceof Array) {
// 挂载执行函数结果
filterObject.forEach(filterItem => {
filter['_' + filterItem.name] = (req) => {
return new Promise((resolve, reject) => {
try {
resolve(filterItem(req))
} catch (error) {
reject({
isVail: false,
msg: filterItem.name + '过滤器 执行失败',
erro: error
})
}
})
}
Object.assign(filter, {
get [filterItem.name]() {
return filter['_' + filterItem.name]()
}
})
})
}
// 如果是对象 定制filter
else if (filterObject instanceof Object && typeof filterObject === "object") {
Object.assign(filter, filterObject)
}
// 函数直接挂载可执行
else {
filter['_' + filterObject.name] = (req) => {
return new Promise((resolve, reject) => {
try {
resolve(filterObject(req))
} catch (error) {
reject({
isVail: false,
msg: '过滤器 执行失败',
erro: error
})
}
})
}
Object.assign(filter, {
get [filterObject.name]() {
return filter['_' + filterObject.name]()
}
})
}
req = req ? req : {}
req.filter = (req.filter ? {
...filter,
...req.filter
} : filter)
if (window) {
window._filter = window._filter ? {
...window._filter,
...req.filter
} : req.filter
}
return req.filter;
}
if (isPromise) {
return new Promise((resolve, reject) => {
resolve(fn())
})
} else {
return fn
}
}
if (typeof module === "object" && typeof module.exports === "object") {
module.exports = registerFilter
} else {
if (window) {
window.registerFilter = registerFilter
} else {
throw new Error("无法使用浏览器环境")
}
}