mw.validation

This librarie is able to validate an entire javascript Object or just properties. The main features:

• The syntaxe is human readable.

• You can still validate with the code (the phylosophy is; you will ever have specific validation)

• Full object validation

• Single property object validation from 2 side

  • Single propery validation from a view (everything is a string) https://www.guillaume-chervet.fr/articles/item/0548276c-4209-4b8f-beb8-da9067840248/encore-un-peu-de-validation
    • will require "parsing"
  • Single property validation from an object to a view
    • will require "formatting"

• Pre-customize rules :

  • url
  • require
  • digit: represent an integer
  • string
  • color
  • minLength
  • maxLength
  • date
  • etc. //TODO

How install

//Install it with :
- npm install mw.validation --save

Packages

• mw.validation

How to use it server side (node.js)

For server side, inside node.js you can use Object validation:

var validation = require("mw.validation");
 
var model = {
  id: "3",
  name: "Ploufragan",
  author: "Guillaume",
  review: 3,
  image: {
    url:
      "http://localhost:8081/api/files/7577fcc0-0580-11e7-a2b8-5dcb02604871_hackathon.PNG",
    title: ""
  }
};
 
const rules = {
  id: ["required"],
  name: [
    "required",
    {
      minLength: {
        minLength: 3
      }
    },
    {
      maxLength: {
        maxLength: 100
        message: "Expression is too long {maxLength} characters maximum"
      }
    },
    {
      pattern: {
        regex: /^[a-zA-Z -]*$/
      }
    }
  ],
  author: ["required"],
  review: ["required", "digit"],
  "@image": {
    url: ["url"],
    title: [
      {
        required: {
          onlyIf: onlyIf,
          message: "Field Image title is required"
        }
      }
    ]
  }
};
var validationResult = validation.objectValidation.validateModel(
  newPlace,
  rules,
  true
);
 
if (!validationResult.success) {
  console.log(validationResult.detail);
}

Object validation samples

    (function () {
      var model = {
        id: "3",
        name: "Ploufragan",
        author: "Guillaume",
        review: 3,
        image: {
          url: "http://localhost:8081/api/files/7577fcc0-0580-11e7-a2b8-5dcb02604871_hackathon.PNG",
          title: ""
        }
      };
 
      var rules = {
        id: ['required'],
        name: ['required'],
        author: ['required'],
        review: ['required', 'digit'],
        '@image': {
          url: ['url'],
          title: ['required']
        }
      };
 
      var result = mw.objectValidation.validateModel(model, rules);
 
      console.log(JSON.stringify(result));
      // {"success":false,"detail":{"model.image.url.url":"Veuillez saisir une url valide.","model.image.title.required":"Le champ est requis."}}
 
      var model = {
        id: "3",
        name: "sd",
        author: "Guillaume",
        review: 3,
        image: {
          url: "",
          title: ""
        },
        youhou: ''
      };
 
      var result2 = mw.objectValidation.validateModel(model, rules, true);
 
      console.log(JSON.stringify(result2));
      // {"success":false,"detail":{"model.youhou.illegal":"La proprieté n'est pas authorisée.","model.image.title.required":"Le champ est requis."}}
 
      var onlyIf = function(){
         if(model.image && model.image.url){
           return true;
         }
         return false;
      }
 
        var rules3 = {
        id: ['required'],
        name: ['required', {minLength: { minLength: 3}}, { maxLength : { maxLength: 100}}, {pattern: { regex: /^[a-zA-Z -]*$/}} ],
        author: ['required'],
        review: ['required', 'digit'],
        '@image': {
          url: ['url'],
          title: [ { required: { onlyIf:onlyIf, message: 'Field Image title is required' }}]
        }
      };
       var result3 = mw.objectValidation.validateModel(model, rules3, true);
      console.log(JSON.stringify(result3));
      // {"success":false,"detail":{"model.name.minLength":"Veuillez saisir au moins 3 caractère(s).","model.youhou.illegal":"La proprieté n'est pas authorisée."}}
 
       var model = {
        id: "3",
        name: "sd",
        author: "Guillaume",
      };
 
       var result4 = mw.objectValidation.validateModel(model, rules3, true);
      console.log(JSON.stringify(result4));
      // {"success":false,"detail":{"model.name.minLength":"Veuillez saisir au moins 3 caractère(s).","model.review.notfound":"La proprieté n'est pas présente.","model.image.notfound":"La proprieté n'est pas présente."}}
 

View validation (generaly used at client side)

View validation validate only one property from a list of rules.

var rules = {
  input: ["color"]
};
 
//#abc and #abcdef   but not #abcd
 
var result = validation.validateView("#abc", rules.input);
expect(result[0].success).to.equal(true);

Sample of custom validation

You can define "one" custome validation rule :

const validatePassword = function () {
        if (vm.user.password === vm.user.passwordConfirm) {
            return { success: true, message: '' };
        }
        return { success: false, message: 'Les deux mot de passe doivent être identique.' };
    };
    const customPassword = {
        custom: {
            message: 'a default message'
            validateView: validatePassword,
            validateModel: validatePassword
        }
    };
 
    vm.rules = {
        password: login.rules.password,
        passwordConfirm: ['required', customPassword],
    };
 

Your return message can be dynamically generated like bellow :

const getSourceRules = function(synonyme) {
  const validate = function(value) {
    const val = validateSupplierReference(value);
    if (!val.success) {
      return val;
    }
 
    for (let index = 0; index < vm.Synonymes.length; index++) {
      const element = vm.Synonymes[index];
      if (element.Source != null && value != null) {
        if (
          element !== synonyme &&
          element.Source.toLowerCase() === value.toLowerCase()
        ) {
          return {
            message: "Un élément ne peut pas être en doublons en source.",
            success: false
          };
        }
      }
    }
 
    if (
      value &&
      vm.Model.Dest &&
      value.toLowerCase() === vm.Model.Dest.toLowerCase()
    ) {
      return {
        message: "La source ne peut être égale à la cible.",
        success: false
      };
    }
    return { message: "", success: true };
  };
 
  const customDest = {
    custom: {
      validateView: validate,
      validateModel: validate
    }
  };
 
  const rules = {
    Dest: ["required", { maxLength: 40 }, customDest]
  };
 
  return rules.Dest;
};

Roadmap

• Update documentation => Describe all rules, more internal detail
• Plug moment or something else to internationalize date validation (date lib should be injected and not required)
• Make API more fluent