Dependencies

Express.js

Submited Data validation

You can use this validator by requiring the "request-validator" like below:

let RequestDataValidator = require('./request-data-validators');
let validator = new RequestDataValidator(req,res);

let data = {
    "value1": validator.body(request,true,'Value 1').type('int').val(),
    "value2": validator.body(request,true,'Value 2').type('int').allow([0,1]).val()
}

you have to call isValidate method to check that all data is validate

let is_validated = validator.isValidate()

if you provide true as parameter then it redirect to back by defalut with old data erros in flash. YOu can retrive old data and error like below

let errors = Req.flash('errors')[0],
let old = Req.flash('old')[0]

if you want to get the errors in json format

let errors = validator.errors.details;

Request validator methods:

| Methods | Parameters | Decription| |---------|------------|-----------| | get/params| key(string) | retrive the value url params | | body/post | key(string), isRequired(bool), name(string), custom_message(string) | retrive value of url params | | type | type(string) | validate the value type such as int, float,bool,number etc| | length | length(int), custom_message(string) | validate the value is fixed length | | minLength | length(int), custom_message(string)|validate minimum length of the value | | maxLength | length(int), custom_message(string)|validate maximum length of the value | | minNumber | value(int), custom_message(string)|validate minimum number of the value | | maxNumber | value(int),custom_message(string)|validate maximum number of the value | | disallow | values(array), custom_message(string) | validate if disallow value is provided | | allow | values(array), custom_message(string) | validate the value is from allowed list | | custom | callback function, custom_message(string) | return true of false from the callback methods | | sameAs | key(string), custom_message(string) | check the value is same as others value | | format | type(string="array_obj"), format(array of object),custom_message(string) | validate the provide array is correct format | | val| N/A | finally return the value | | validate| auto_response(bool) | validate all required validation and return the result |

Example of format array :

You have to pass this type of format array in calling the format method

[{ "update_quantity": 'int', "inventory_item_id": "int" }]

List of the value of type in type method:

| type | Decription | |------|------------| | int| Accept only integer type value | | string | Accept only string type value | | email | Accept only email type value | | date | Accept only date type value | | number | Accept only number type value | | boolean | Accept only boolean type value | | array_int | Accept only array int type value | | mobile_bd | Accept only valid mobile number of bangladesh |