param-matcher

param-matcher

a middle-wear for Express to validate the parameters of request

usage:

  const Matcher = require("param-matcher");
  let router = Express.Route();
  
  let options = {
    id:"required;isInt",
    name:"optional;REGEXP:^[a-z_0-9]{6,20}$"
  } 
  router.all("/",Matcher.newMatcher(options),(req,res,next)=>{
      //TODO:your code
  }
  

"required","optional" 2 items are mutual exclusion,and they must be the first item.

Matcher.newMatcher(options,fail)

options：

an object contains key-values that used for specifying which method to match the parameter in request

fail:

a string variate,only 3 patterns, specifed which way to return the unmatch message.

1. "" or "json" :return an msg object.
2. "redirect:${URL}" : redirect to the URL with unmatch message in the query string
3. "render:${templat}" : render the specified templat to browser,with unmatch message

Matcher.setMatcher(name,matcher)

name

a string to mark the matcher

matcher

a function to check the pattern ,if the pattern is matched return "ok" ,not return your tips