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Programming language: Crystal
Tags: ORM/ODM Extensions    

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README

Selenite::DB

Selenite is a persistency-model based library

Installation

Add this to your application's shard.yml:

dependencies:
  selenite-db:
    github: xdougx/selenite-db

Usage

require "selenite-db"

# setup out connection
Selenite::DB::Configuration.configure do |conf|
  conf.client_encoding = "utf8"
  conf.port = "5432"
  conf.database = "crystal"
  conf.user = "root"
  conf.password = ""
  conf.host = "localhost"
  conf.env = "development"
end

When you build your model you'll need to define your properties, initializers, attributes types, and the table name.

1 Create our base model

class Users < Selenite::DB::Persistence
end

2 Define its table

def self.table_name
  "users"
end

3 Setup attributes types

  @name : String?
  @email : String?
  @password : String?
  @password_digest : String?

4 Define the properties

  property(id, created_at, updated_at) # is needed to be separeted

  set_property(name, email, password, password_digest) # base attributes

  set_initializer(true, name, email, password, password_digest) # base initializer, **true** is for timestamp initialization

5 That is our base model

class Users < Selenite::DB::Persistence

  def self.table_name
    "users"
  end

  @name : String?
  @email : String?
  @password : String?
  @password_digest : String?

  property(id, created_at, updated_at) # is needed to be separeted
  set_property(name, email, password, password_digest) # base attributes
  set_initializer(true, id, name, email, password, password_digest)

end

6 Try it

user = Users.new({"name" => "Vitor Hugo", "email" => "vitor.hugo@email.net"})
user.save

puts "User name is: #{user.name}"
puts "User email is: #{user.email}"

Persistency Available Methods


def self.exec(query); end                              # executes a query and return a result from PG
def exec(query); end                                   # alias for an instance
def save; end                                          # persist your model
def update_columns(params); end                        # update the values direct
def self.exists?(column, value); end                   # verify if an id exists
def self.exists?(params); end                          # verify if exists using many params
def self.find(id : Int32 | Int64 | String | Nil); end  # find with id
def self.get_result_by(params); end                    # find using many params
def self.find_by(params); end                          # find using many params

Features Roadmap

  • [ ] has_one
  • [ ] has_many
  • [ ] belongs_to
  • [ ] joins
  • [ ] where
  • [ ] validations
  • [ ] order
  • [ ] limit
  • [ ] offset
  • [ ] scheema

Contributing

Would like to help us to improve our library?

  1. Fork it ( https://github.com/xdougx/selenite-db/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

Contributors

  • xdougx Douglas Rossignolli - creator, maintainer

Credits and Thanks

  • Crystal-Lang Irc/Gitter
  • @mverzilli