Class: ProductScope

Inherits:
ActiveRecord::Base
  • Object
show all
Extended by:
Scopes::Dynamic
Defined in:
app/models/product_scope.rb

Overview

ProductScope is model for storing named scopes with their arguments, to be used with ProductGroups.

Each product Scope can be applied to Product (or product scope) with #apply_on method which returns new combined named scope

Instance Method Summary collapse

Methods included from Scopes::Dynamic

price_scopes_for

Instance Method Details

#apply_on(another_scope) ⇒ Object

Applies product scope on Product model or another named scope



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# File 'app/models/product_scope.rb', line 25

def apply_on(another_scope)
  array = *self.arguments
  if Product.respond_to?(self.name.intern)
    relation2 = if (array.blank? || array.size < 2)
                    Product.send(self.name.intern, array.try(:first))
                else
                    Product.send(self.name.intern, *array)
                end
  else
    relation2 = Product.metasearch({self.name.intern => array}).relation
  end
  unless another_scope.class == ActiveRecord::Relation
    another_scope = another_scope.send(:relation)
  end
  another_scope.merge(relation2)
end

#check_validity_of_scope ⇒ Object

checks validity of the named scope (if its safe and can be applied on Product)



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# File 'app/models/product_scope.rb', line 50

def check_validity_of_scope
  errors.add(:name, "is not a valid scope name") unless Product.respond_to?(self.name.intern)
  apply_on(Product).limit(0) != nil
rescue Exception => e
  unless Rails.env.production?

    puts "name: #{self.name}"
    puts "arguments: #{self.arguments.inspect}"
    puts e.message
    puts e.backtrace
  end
  errors.add(:arguments, "are incorrect")
end

#is_ordering? ⇒ Boolean

test ordering scope by looking for name pattern or missed arguments

Returns:

  • (Boolean) 


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# File 'app/models/product_scope.rb', line 65

def is_ordering?
  name =~ /^(ascend_by|descend_by)/ || arguments.blank?
end

#products ⇒ Object

Get all products with this scope



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# File 'app/models/product_scope.rb', line 18

def products
  if Product.respond_to?(name)
    Product.send(name, *arguments)
  end
end

#to_s ⇒ Object 



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# File 'app/models/product_scope.rb', line 75

def to_s
  to_sentence
end

#to_sentence ⇒ Object 



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# File 'app/models/product_scope.rb', line 69

def to_sentence
  result = I18n.t(:sentence, :scope => [:product_scopes, :scopes, self.name], :default => "")
  result = I18n.t(:name, :scope => [:product_scopes, :scopes, self.name]) if result.blank?
  result % [*self.arguments]
end