eggjs&sequelize使用教程一（表单自动验证）

egg form 表单验证

共三个文件

1.validate.config.js 主要是配置 formateError: 是定制错误时返回的结构， default设置对应的错误代码

module.exports = {    formateError: null,    defaultMsg: {        required: 'missing filed',        isReg: 'not match',        notReg: 'match',        isEmail: 'not email',        isUrl: 'not url',        isIP: 'not IP',        isAlpha: 'not all letter',        isAlphanumeric: ' not letter or number',        isNumeric: 'not a number',        isInt: 'not int number',        isFloat: 'not float number',        isLowercase: 'letters are not small letter',        isUppercase: 'letters are not big letter',        notNull: 'not allow null',        isNull: 'must be null',        notEmpty: 'string not allow empty',        contains: 'not contain require letters',        notIn: 'is in required array',        isIn: 'not in required array',        len: 'the length is out of bounds',        max: 'the number bigger than max value',        min: 'the number samller than min value',            }   }

2.validate.js 验证的对象，所有的验证方法都在里面，可以自行扩充

3.测试文件 validate.test.js

示例

const validate = require('./validate.js');const assert = require('assert');require('should');function getInstance(){    return new validate({            // formateError:function(err){            //     return err;            // }    });}function check(rule,key,ruleName,data,ResultBoolean){    if(ResultBoolean===true){        let instance = getInstance();        let result = instance.validate(rule,data);        assert.equal(result, true);        assert.equal(instance.errors.length,0);            }else{        let instanceFalse = getInstance();        let resultFalse = instanceFalse.validate(rule,data);        assert.equal(resultFalse, false);        assert.equal(instanceFalse.errors.length,1);        instanceFalse.errors[0].should.have.property('msg',rule[key][ruleName].msg);        instanceFalse.errors[0].should.have.property('filed').equal(key);            }    // validate false    // instance.should.have.propertyByPath('errors',0,'filed').equal('name');    }it('required',function(){    let rule =  { name: { required:{args:true,msg:'required'}} };    let myCheck= check.bind(null,rule,'name','required');    myCheck({name:'ac'},true);    myCheck({names:'ac2'},false);  });

运行测试
自行安装相应的包

# mocha validate.test.js

在egg中的使用方法

在app/middelware下创建 form-validate.js

module.exports = app => {    return async function formValidate(rule,ctx,next) {             const validate = new ctx.app.validate();        const requireFiled = Object.getOwnPropertyNames(rule);        let form = {};        if(ctx.method=='POST'){            let queryFiled = Object.getOwnPropertyNames(ctx.request.body);            for(let queryKey of queryFiled){                if(requireFiled.indexOf(queryKey)==-1){                    delete ctx.request.body[queryKey];                }            }            form = ctx.request.body;        }else{            let queryFiled = Object.getOwnPropertyNames(ctx.request.query);            for(let queryKey of queryFiled){                if(requireFiled.indexOf(queryKey)==-1){                    delete ctx.request.query[queryKey];                }            }                        form = ctx.request.query;        }        if(validate.validate(rule,form) === false){            return ctx.setReturn(app.code.formError,validate.errors);        }        await next();    }}

validate.validate(rule,form)遮就是验证表单，前面只是区分get和post，和去除掉多余的表单项
rule这个变量就是从路由中传过来的

路由的写法

module.exports = app => {  const { router } = app;  let formValidate = app.middlewares.formValidate(app);  let { testFormRule,loginForm } = require('./form/form-rule')(app);  router.get('/', formValidate.bind(null,testFormRule), 'home.index');  router.post('/api/login',formValidate.bind(null,loginForm),'login.login');};

loginForm

module.exports = app => {    const loginForm = {        username: {            required: {                args: true,                msg: app.code.usernameNotNull            },            notEmpty: {                args: true,                msg: app.code.usernameNotNull            }        },        password: {            required: {                args: true,                msg: app.code.passwordNotAllowNull            },            notEmpty: {                args: true,                msg: app.code.passwordNotAllowNull            }        }    };    return loginForm;}

当错误是返回的错误结构是[{filed:’username’,msg:501}]
具体代码位置