puts WaYdotNET => Carlo Bertini

LAZY Agnostic Application Generators (padrino-lazy)

Published on May 21, 2011 by WaYdotNET in ruby, Script, tips, Uncategorized

Overview

Through padrino-lazy, we can include some common properties shared between the model object used a base model object

Padrino is very good framework, and almost follows the DRY principle (Don’t Repeat Yourself) When we need to have some common properties shared between the model object of our ORM, using the generator padrino-gen, We can only include these properties in each model to generate.

I hope this idea will be included in Padrino Framework.
Principle / Step

generate a model
convert the model into base model ( move this model into lib/ folder)
save config file with model base’s list
generate a model from base model
generate a migration file

Usage

Step 1-2-3

1	$ padrino-lazy base --c config_file --b base_model_name --f field_to_create

Step 4-5

1	$ padrino-lazy model --c config_file --b base_model_name --f field_to_create --m model_name

Install

1	gem install padrino-lazy --pre

Example

1	$ padrino-lazy base --c config --b BaseModel --f "create_at:datetime is_active:boolean"

now we have

lib/base_model.rb class BaseModel

 
include DataMapper::Resource
 
  # property ,
  property :id, Serial
  property :create_at, DateTime
  property :is_active, Boolean
 
end

config/config.yml

 
---
- base: BaseModel
fields: create_at:datetime is_active:boolean

1	$ padrino-lazy model --c config --b BaseModel --f "name:string have_children:boolean born:date foo:integer" --m User

app/models/user.rb

class User <  BaseModel
 
  # property ,
  property :name, String
  property :have_children, Boolean
  property :born, Date
  property :foo, Integer
end

db/migrate/001_create_users.rb

 
migration 1, :create_users do
  up do
    create_table :users do
      column :id, Integer, :serial =&gt; true
      column :name, String
      column :have_children, Boolean
      column :born, Date
      column :foo, Integer
    end
  end
 
  down do
    drop_table :users
    end
  end

db/migrate/002_add_basic_model_to_user.rb

 
migration 2, :add_basic_model_to_user do
  up do
    modify_table :users do
      add_column :name, String
      add_column :have_children, Boolean
      add_column :born, Date
      add_column :foo, Integer
  end
end
 
down do
modify_table :users do
drop_column :name
drop_column :have_children
drop_column :born
drop_column :foo
end
end
end