Module: HasRelationship::Base

Defined in:
lib/has_relationship/has_relationship.rb

Instance Method Summary collapse

Instance Method Details

#has_inverse_relationship(types, options = {}) ⇒ Object 



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# File 'lib/has_relationship/has_relationship.rb', line 55

def has_inverse_relationship(types, options={})
  types = [types] unless types.kind_of?(Array)

  types.each do |type|
    class_name = options[:class_name] ? options[:class_name].classify : type.to_s.classify
    base_class = class_name.constantize.base_class.name.to_s

    # default relationship: Class2_Class1, where Class1 is the class of this class, 
    #   Class2 is the class of that this class has a relationship with
    relationship = "#{class_name}_#{self.to_s}"
  
    unless options[:singular].present?
      as = options[:as] ? options[:as].to_s : type.to_s
      options[:singular] = (as.pluralize != as) 
    end
  
    if options[:as]
      resource_name = options[:as].to_sym
      relationship = "#{options[:as].to_s.classify}_#{self.to_s}"
    elsif options[:singular]
      resource_name = type.to_s.tableize.singularize.to_sym
    else
      resource_name = type.to_s.tableize.to_sym
    end

    relationship = options[:relationship] if options[:relationship] 
    
    relationships = relationship.kind_of?(Array) ? relationship : [relationship]
    
    relationship_through = options[:singular] ? ("#{self.to_s}_#{resource_name}").to_s.tableize.singularize.to_sym : ("#{self.to_s}_#{resource_name}").to_s.tableize.to_sym
  
    class_eval do
      through_conditions = (relationship.kind_of?(Array) ? nil : {:relationship => relationship})
      
      if options[:singular]
        has_one relationship_through, :as => :relation2, :dependent => :destroy, :class_name => "HasRelationship::Relationship", 
                                      :conditions => through_conditions
        has_one resource_name, :through => relationship_through, :class_name => class_name, 
                               :source => :relation1, :source_type => base_class, 
                               :conditions => ["relationships.relation1_type = ? and relationships.relationship in (?)", base_class, relationships], :select => options[:select]
      else
        has_many relationship_through, :as => :relation2, :dependent => :destroy, :class_name => "HasRelationship::Relationship", 
                                       :conditions => through_conditions
        has_many resource_name, :through => relationship_through, :readonly => false, :class_name => class_name, 
                                :source => :relation1, :source_type => base_class, 
                                :conditions => ["relationships.relation1_type = ? and relationships.relationship in (?)", base_class, relationships], :select => options[:select]
      end
    end
  end
end

#has_relationship(types, options = {}) ⇒ Object 



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# File 'lib/has_relationship/has_relationship.rb', line 3

def has_relationship(types, options={})
  types = [types] unless types.kind_of?(Array)

  types.each do |type|
    class_name = options[:class_name] ? options[:class_name].classify : type.to_s.classify
    base_class = class_name.constantize.base_class.name.to_s

    # default relationship: Class1_Class2, where Class1 is the class of this class, 
    #   Class2 is the class of that this class has a relationship with
    relationship = "#{self.to_s}_#{class_name}"    
  
    unless options[:singular].present?
      as = options[:as] ? options[:as].to_s : type.to_s
    
      options[:singular] = (as.pluralize != as) 
    end
  
    if options[:as]
      resource_name = options[:as].to_sym
      relationship = "#{self.to_s}_#{options[:as].to_s.classify}"
    elsif options[:singular]
      resource_name = type.to_s.tableize.singularize.to_sym
    else
      resource_name = type.to_s.tableize.to_sym
    end

    relationship = options[:relationship] if options[:relationship] 
    
    relationships = relationship.kind_of?(Array) ? relationship : [relationship]
    
    relationship_through = options[:singular] ? ("#{self.to_s}_#{resource_name}").to_s.tableize.singularize.to_sym : ("#{self.to_s}_#{resource_name}").to_s.tableize.to_sym
  
    class_eval do
      through_conditions = (relationship.kind_of?(Array) ? nil : {:relationship => relationship})
      
      if options[:singular]
        has_one relationship_through, :as => :relation1, :dependent => :destroy, :class_name => "HasRelationship::Relationship", 
                                      :conditions => through_conditions
        has_one resource_name, :through => relationship_through, :class_name => class_name, 
                               :source => :relation2, :source_type => base_class, 
                               :conditions => ["relationships.relation2_type = ? and relationships.relationship in (?)", base_class, relationships], :select => options[:select]
      else
        has_many relationship_through, :as => :relation1, :dependent => :destroy, :class_name => "HasRelationship::Relationship", 
                                       :conditions => through_conditions
        has_many resource_name, :through => relationship_through, :readonly => false, :class_name => class_name, 
                                :source => :relation2, :source_type => base_class, 
                                :conditions => ["relationships.relation2_type = ? and relationships.relationship in (?)", base_class, relationships], :select => options[:select]
      end
    end
  end
end