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51 lines
1.1 KiB
51 lines
1.1 KiB
4 years ago
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import _ from 'lodash'
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/**
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* 自定义表达式
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*/
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const expressionOperator = {
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'eq': function(v1, v2) {
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return _.isEqual(v1, v2)
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},
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'ne': function(v1, v2) {
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return !_.isEqual(v1, v2)
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}
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}
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/**
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* 逻辑连接符
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* @type {{'1': string, '2': string}}
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*/
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const LogicConnector = {
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1: '||',
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2: '&&'
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}
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/**
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* 获取表达式
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* @conditionList 条件列表
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* @connector 连接符 ||或者 &&
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*/
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export function getExpression(conditionList, connector) {
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let exList = conditionList.map(item => {
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return `#id${item.formItemId} ${item.expression} ${item.optionValue}`
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})
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return _.join(exList, LogicConnector[connector])
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}
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/**
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* 执行表达式是否成立
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*/
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export function evalExpression(context, expression) {
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let exArray = expression.split(/[|][&]/)
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exArray.forEach(item => {
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let itemExpArr = item.split(' ')
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let varName = itemExpArr[0].replace('#id')
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let sp = itemExpArr[1]
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let value = itemExpArr[2]
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let flag = expressionOperator[sp](context[varName], value)
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})
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return flag
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}
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