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JsonDefaults

Very simple library for defining default options for your object.

Installation

Add this line to your application's Gemfile:

gem 'json_defaults'

And then execute:

$ bundle

Or install it yourself as:

$ gem install json_defaults

Usage

Working with Model

  • Create jsonb field for you model:
rails g migration add_json_field_to_users json_field:jsonb
rake db:migrate
  • Add this to your model:
class User < ActiveRecord::Base
  extend JsonDefaults
  
  json_defaults(
    field: "json_field", 
    options: {
      field1: "It's",
      field2: "awesome"
    }
  )
end

And next just use defined fields with default options

user = User.new
user.json_field # => {"field1"=>"It's", "field2"=>"awesome"}
user.field1 # => It's
user.field2 # => awesome

You can update this field directly

user = User.new
user.field1 # => It's
user.field1 = "cool" 
user.field1 # => cool
  • You can also define type for each field:
class User < ActiveRecord::Base
  extend JsonDefaults
  
  json_defaults(
    field: "json_field", 
    options: {
      field1: "It's",
      field2: "awesome",
      field3: {
        value: false,
        boolean: true
      },
      field4: {
        value: 666,
        integer: true
      }
    }
  )
end
user = User.new
user.field4 # => 666
user.field4 = "123" 
user.field4 # => 123

Options for defining field

  json_defaults(
    field: "json_field", 
    options: {
      key: "value",
      key: {
        value: 666,
        integer: true
      }
    }
  )
Option type Description
field String This parameter specifies which field in the model the json_defaults plugin will be applied to.
options Hash Default hash for selected field with key and value
key Key's name in default hash. Can be string or symbol

About

ruby plugin for manage json default fields

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