Module: HasSlug::SluggableClassMethods

Defined in:
lib/has_slug/sluggable_class_methods.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(base) ⇒ Object

:nodoc:#



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# File 'lib/has_slug/sluggable_class_methods.rb', line 3

def self.extended(base) #:nodoc:#
  class << base
    alias_method_chain :find_one, :slug
    alias_method_chain :find_some, :slug
  end
end

Instance Method Details

#find_one_with_same_slug(object) ⇒ Object

Find a single record that has the same slug as the given record’s slug



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# File 'lib/has_slug/sluggable_class_methods.rb', line 27

def find_one_with_same_slug(object)
  slug_column = has_slug_options[:slug_column]
  
  options  = if object.new_record? then {}
                                   else { :conditions => ["#{quoted_table_name}.#{primary_key} != ?", object] }
                                   end

  if scope = has_slug_options[:scope]
    result = send("find_by_#{slug_column}_and_#{slug_scope_attribute}",
                  object.slug, object.send(scope), options)
  else
    result = send("find_by_#{slug_column}", object.slug, options)
  end
    
  result.found_by_slug! if result

  result
end

#find_one_with_slug(id_or_slug, options = {}) ⇒ Object

Find a single record using the record’s slug or the record’s id



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# File 'lib/has_slug/sluggable_class_methods.rb', line 47

def find_one_with_slug(id_or_slug, options = {})
  return find_one_without_slug(id_or_slug, options) if id_or_slug.is_a?(Fixnum)

  slug_column = has_slug_options[:slug_column]

  if result = send("find_by_#{slug_column}", id_or_slug, options)
    result.found_by_slug!
  else
    result = find_one_without_slug(id_or_slug, options)
  end
  
  result
end

#find_some_with_slug(ids_or_slugs, options = {}) ⇒ Object

Find multiple records using the records slugs or the records id’s



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# File 'lib/has_slug/sluggable_class_methods.rb', line 62

def find_some_with_slug(ids_or_slugs, options = {})
  return find_some_without_slug(ids_or_slugs, options) if ids_or_slugs.all? { |x| x.is_a?(Fixnum) }
  
  find_options = options.dup
  
  find_options[:conditions] ||= [""]
  find_options[:conditions]   = [find_options[:conditions] + " AND "] if find_options[:conditions].is_a?(String)
  find_options[:conditions][0] << "(#{quoted_table_name}.#{primary_key} IN (?)" <<
                                  " OR #{quoted_table_name}.#{has_slug_options[:slug_column]} IN (?))"
  
  find_options[:conditions] << ids_or_slugs
  find_options[:conditions] << ids_or_slugs.map(&:to_s)
  
  found    = find_every(find_options)
  expected = ids_or_slugs.map(&:to_s).uniq
  
  unless found.size == expected.size
    raise ActiveRecord::RecordNotFound, "Couldn't find all #{name.pluralize} with IDs (#{ids_or_slugs * ', '}) AND #{sanitize_sql(options[:conditions])} (found #{found.size} results, but was looking for #{expected.size})"
  end
  
  ids_or_slugs.each do |slug|
    slug_record = found.detect { |record| record.send(has_slug_options[:slug_column]) == slug }
    slug_record.found_by_slug! if slug_record
  end
  
  found
end

#slug_scope_attribute ⇒ Object 



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# File 'lib/has_slug/sluggable_class_methods.rb', line 10

def slug_scope_attribute
  return @@slug_scope_attribute if defined?(@@slug_scope_attribute)

  if scope = has_slug_options[:scope]
    if columns.any? { |c| c.name == scope }
      @@slug_scope_attribute = scope.to_sym
    elsif columns.any? { |c| c.name == "#{scope}_id" }
      @@slug_scope_attribute = "#{scope}_id".to_sym
    else
      raise Exception, "has_slug's scope '#{scope}' does not exist in the model '#{self.class.to_s}'"
    end
  end
  
  @@slug_scope_attribute
end