easy_model¶ ↑

EasyModel provides features of database independent attribute. You can define the attribute like ActiveRecord that perform data conversion during assignment.

Define database independent attribute¶ ↑

First, include EasyModel to your model. Next define attribute by ‘column` method.

class LoginForm

  include EasyModel::Column

  column :member_no, :integer
  column :password, :string
  column :remember, :boolan, default: false

end

When you assign a value to attribute defined by ‘column` method, a value is converted to attribute’s data type (like ActiveRecord).

login_form = LoginForm.new(:member_no => '1234567',
                           :password  => 'PASSWORD',
                           :remember  => 'false')

login_form.member_no                  # => 1234567
login_form.member_no_before_type_cast # => '1234567'
login_form.password                   # => 'PASSWORD'
login_form.password_before_type_cast  # => 'PASSWORD'
login_form.remember                   # => false
login_form.remember_before_type_cast  # => 'false'

Internationalization¶ ↑

EasyModel uses I18n to internationalization. By default, the look up key is ‘<locale>.easy_model`.

en:
  easy_model:
    models:
      login_form: Login form
    attributes:
      login_form:
        member_no: Member number
        password: Password
        remember: Keep the login state.

By define the ‘i18n_scope` method, you can change the look up key. For example, to use the look up key same as ActiveRecord:

class LoginForm

  include EasyModel::Column

  def self.i18n_scope
    :activerecord
  end

end

Search form¶ ↑

EasyModel::SearchForm is useful to create search form model. EasyModel::SearchForm includes EasyModel::Column, and provides useful features to searching. Only define the ‘scoped` method, you can use query method same as ActiveRecord.

For example:

class UserSearchForm < EasyModel::SearchForm

  column :name, :string

  column :status, :integer

  validates :status, :inclusion => [1, 2, 3]

  def scoped
    scoped = User.all

    # Add to conditions if value is present.
    scoped = scoped.where(:name => name) if self.name.present?
    scoped = scoped.where(:status => status) if self.status.present?

    # Return scope including search conditions.
    scoped
  end

end

Query methods (i.e. find, all, …) is delegated to ‘scoped` method. So, you can use the interface same as ActiveRecord::Relation.

user_search_form = UserSearchForm.new(params[:user_search_form])

if user_search_form.valid?
  users = user_search_form.all
else
  ...
end

Copyright¶ ↑

Copyright © 2012 Synergy Marketing, Inc. See LICENSE.txt for further details.