api_validator

This gem helpful to validate api calls. You need to set rules and messages in yml file and rest of the things are handle by gem.

Installation

Add this line to your application's Gemfile:

gem 'api_validator'

And then execute:

$ bundle

Or install it yourself as:

$ gem install api_validator

Also you need to run generator to set the files -

	$ rails g api_validator:install api_validator

Note : Here you can pass any name you want to set for initilizer file and validation yml file, instead of 'api_validator'.

Usage

Before use of this gem you need to set before_action :request_validation in controller where you want to validate request before reach to controller's method.

Also you need to set rules in the api_validator.yml.erb file. Example are mentioned in yml file.

Sample pattern for validation as follows -

controller_name:
   method_name:
     param1:
       rules:
         presence: true
         integer: true
         min_length: 5
         max_length: 15
         pattern: <%= /\A^[a-zA-Z\s'.-]*$\Z/.source %>
         inclusion: "1..10"
       messages:
         presence: "Param1 must present."
         integer: "Param1 must contain integer only."
         min_length: "Param1 must have minimum length of 5."
         max_length: "Param1 must have maximum length of 15."
         pattern: "Invalid Param1"
         inclusion: "The param1 must be between 1 and 10"

Sample validation for JSON value in request parameter -

 controller_name:
   method_name:
     param1:
       rules:
         presence: true
         json_string: true
       messages:
         presence: "Param1 must present."
         json_string: "Invalid json string."
       paramters:
         json_1st_param:
           rules:
             presence: true
           messages:
             presence: "Json first param must prresent."
         json_2nd_param:
           rules:
             integer: true
           messages:
             integer: "Json second param must be integer only."

License

The gem is available as open source under the terms of the MIT License.