bmfe-vue2-base/src/js/baseLibs/promiseAjax/index.js

BM 后台系统基础框架

/**
* @Author: songqi
* @Date:   2016-06-29 22:06:00
* @Email:  songqi@benmu-health.com
* @Last modified by:   songqi
* @Last modified time: 2017-02-20
*/


var _ = require('lodash'),
    Ajax = require('./ajax'),
    Promise = Promise ? Promise : require('es6-promise').Promise;

var pathMap = {},       // 路径配置
    ajaxMap = {},       // ajax 对象 map
    paramMap = {},      // 请求参数 map
    errorFunction,      // 全局错误回调
    successFuction;     // 全局成功回调

 /**
  * [setConfig 初始化配置文件]
  * @author songqi
  * @date   2016-07-06
  * @param  {[Object]}   options [配置选项]
  */
function setConfig(options){
    if(_.isEmpty(options)){
        return;
    }
    if(_.isPlainObject(options.pathMap)){
        pathMap = options.pathMap;
    }
    if(_.isPlainObject(options.paramMap)){
        paramMap = options.paramMap;
    }
    if(_.isFunction(options.errorFunction)){
        errorFunction = options.errorFunction;
    }
    if(_.isFunction(options.successFuction)){
        successFuction = options.successFuction;
    }
}

/**
 * [dealParam 处理传入的参数]
 * @author songqi
 * @date   2016-07-06
 * @param  {[String]}   type  [请求 method 类型]
 * @param  {[Object]}   param [传入的参数]
 * @return {[Object]}         [参数列表]
 */
function dealParam(type, param){
    if(!param.url){
        return false;
    }
    param.url = pathMap[param.url] || param.url;
    return _.assignIn(_.cloneDeep(paramMap[type] || {}), param);
}

/**
 * [_abortAll abort 掉所有请求]
 * @author songqi
 * @date   2016-07-06
 */
function _abortAll(){
    for(var i in ajaxMap){
        _abortAjax(i);
    }
}

/**
 * [_abortAjax abort 某个确定的 ajax]
 * @author songqi
 * @date   2016-07-06
 * @param  {[String]}   name [ajax id]
 */
function _abortAjax(name){
    if(ajaxMap[name]){
        ajaxMap[name].abort();
        delete ajaxMap[name];
        return;
    }

    if(_.isArray(name)){
        names.map(function(item){
            _abortAjax(item);
        });
    }
}

/**
 * [bindVM 和 vue 进行绑定]
 * @author songqi
 * @date   2016-07-06
 * @param  {[Object]}   vm    [vue component]
 * @param  {[String]}   times [ajax id]
 */
function bindVM(vm, times){
    if(!vm._ajaxNames){
        vm._ajaxNames = [];
        var _destory = vm.$destroy;
        vm.$destroy = function(){
            _destory.apply(vm, arguments);
            vm.abortAjax();
        };
    }
    vm._ajaxNames.push(times);
    vm.abortAjax = function(){
        vm._ajaxNames.map(function(item){
            _abortAjax(item);
        });
    };
}

/**
 * [sendAjax 发送 ajax 请求]
 * @author songqi
 * @date   2016-07-06
 * @param  {[Sting]}   type  [发送类型]
 * @param  {[Object]}   param [参数]
 * @return {[Object]}         [promise ajax]
 */
function sendAjax(type, param){
    var _ajaxObj,
        times = +new Date();

    param = dealParam(type, param);

    var _promiseAjax = new Promise(function(resolve, reject){
        _ajaxObj = Ajax(_.assignIn({}, param, {
            success: function(resData){
                if(resData && resData.resCode === 0 && !_.isUndefined(resData.data)){
                    !param.noDefaultSuccess && successFuction && successFuction(resData);
                    resolve(resData);
                }else{
                    resData.type = 'RE';
                    !param.noDefaultError && errorFunction && errorFunction(resData);
                    reject(resData);
                }
            },
            error: function(err, type){
                var resData = {
                    resCode: -1,
                    msg: '系统错误，请重试',
                    type: type,
                    errInfo: err
                };
                !param.noDefaultError && errorFunction && errorFunction(resData);
                reject(resData);
            },
            complete: function(){
                delete ajaxMap[times];
            }
        }));
    });
    // 和 vm 绑定
    param.vm && bindVM(param.vm, times);

    ajaxMap[times] = _ajaxObj;
    _promiseAjax.name = times;
    _promiseAjax.ajax = _ajaxObj;
    return _promiseAjax;
}

/**
 * [_post 对外提供的 post 方法]
 * @author songqi
 * @date   2016-07-06
 * @param  {[Object]}   param [传入的参数]
 * @return {[Object]}         [Promise ajax]
 */
function _post(param){
    return sendAjax('post', param);
}

/**
 * [_get 对外提供的 post 方法]
 * @author songqi
 * @date   2016-07-06
 * @param  {[Object]}   param [传入的参数]
 * @return {[Object]}         [Promise ajax]
 */
function _get(param) {
    return sendAjax('get', param);
}

module.exports = {
    get: _get,
    post: _post,
    abortAll: _abortAll,
    setConfig: setConfig
};