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https://github.com/aghabeiki/paramvalidator

A multipurpose param validator for SailsJS
https://github.com/aghabeiki/paramvalidator

middle-ware param-validator sailsjs

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A multipurpose param validator for SailsJS

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# Param-Validator

A Param Validator in Middleware for Sailsjs/Express.js

**note**: \
***this project is under heavy developments.***
### Installing

Install node module

```
npm i param-validator
```

Add it as a middelware to your sails http.js .

```
paramValidator: function (req, res, next) {
let paramValidator = new ParamValidator(sails.config.ParamValidator
, sails.log, sails.config.routes, sails.config.environment);
paramValidator.validator(req, res, next);
},
```
#### Config :

Create a config file under Config folder with any name and put this content on it.

```
module.exports.ParamValidator = {
projectBaseDIR: require('path').resolve(__dirname, '../'),
validatorBaseRepo: 'api/ParamValidator/ValidatorBank',
scriptBaseRepo: 'api/ParamValidator/ValidatorBank/script',
excludePrefix: '^(\/upload\/center).*$',
}
```

* ###### validatorBaseRepo :
This config is required, and point to the path of your JSON defenition of param validation

* ###### scriptBaseRepo :
This cinfig is required, and point to the path of your script defenition of param validation

* ##### excludePrefix :
A regex that exclude any path from param validator

##### Param Validator

###### The JSON Object properties

* **URL** \
The URL that should validate ( should be like route config )
* METHOD \
The METHOD should be GET, PUT, DELETE or POST
* BODY or SCRIPT \
The way of validations :D

###### Validation config
* BODY : In this method, you can define a JSON file to validate your param automatically
* Independed properties
* `type` : number, date, string, array, object, email, phone, boolean`
* Multi data type could assign to a param with separator `|`
* `required`: define the param is required or not,default value is true
* Depend properties
* type `number`
* min : minimum acceptable value
* max : maximum acceptable value
* type `string`
* minLength : minimum acceptable lenght of string
* maxLength : maximum acceptable lenght of string
* length : acceptable lenght of string
* type `array`
* rows: in the rows we can define the param and flow the validation config as well.
* type `object`
* body: the properties of the JSON Object and can use all the validation config as well.

* Addition operation
* `compareWithFiled` : compare one pram with another ones
* this param defined as an array, each rows of this arrasy should defined with a single string like ` operator:param_name `
* acceptable operators: all the valid logical compare operand in JS!
* `regex64` : validate a param with regex,this param should define in config file as an regex that encoded with base64

* SCRIPT: In this method you can write your own script to validate your param in your way
* this param should contain the path of your validatior script file
* the file should be under your `scriptBaseRepo` path
* in valid param checking the script should return `true` value
* on any invalidation just throw an Error
* any Error message that you throwen will be send and formated in response
* the script file should be like :

```
module.exports.validator = function (params) {
"use strict";

return true;
}
```
#### Some Validator Config
* **Simple JSON Config**
```
{
"URL": "/test/:param1/callcenter/:param2",
"METHOD": "GET",
"BODY": {
"param1": {
"type": "number"
},
"param2": {
"type": "number",
"min": 1,
"max": 4,
"required": false
},
}
}
```
* **Array Base JSON Config**
```
[
{
"URL": "/test1",
"METHOD": "get",
"BODY": {
"date_from": {
"type": "date",
"required": false,
"regex64": "aBase64String",
"compareWithFiled": [
"<:date_to"
]
},
"date_to": {
"type": "date",
"required": false,
"regex64": "aBase64String",
"compareWithFiled": [
">:date_from"
]
}
}
},
{
"URL": "/test2",
"METHOD": "get",
"SCRIPT": "./script/testScript2.js"
}
]
```
* ***single JSON Config***
```
{
"URL": "/test3",
"METHOD:"post",
"BODY":{
"details": {
"type": "array",
"required": false,
"rows": {
"type": "object",
"body": {
"detail_id": {
"type": "number"
},
"language": {
"type": "string",
"required": false,
"regex64": "aBase64String",
"length": 5
},
"title": {
"type": "string",
"required": false,
"maxLength": 1024
},
"channel": {
"type": "string",
"required": false
}
}
}
}
}
}
```
* ***A complext Config Desing***
```
{
"group a": [
{
"URL": "/test5/:id",
"METHOD": "DELETE",
"SCRIPT": "./script/something.js"
},
{
"URL": "/test6",
"METHOD": "POST",
"SCRIPT": "./script/something2.js"
}
],
"group b": [
{
"URL": "/test7",
"METHOD": "PUT",
"SCRIPT": "./script/something3.js"
}
]
}

```

## Authors

* **Amin Aghabeiki**

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details