module InventoryRefresh::InventoryCollection::Helpers::AssociationsHelper

Public Instance Methods

association_to_base_class_mapping() click to toggle source

@return [Hash{Symbol => String}] Hash with association name mapped to base class of the association

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 49
def association_to_base_class_mapping
  return {} unless model_class

  @association_to_base_class_mapping ||= model_class.reflect_on_all_associations.each_with_object({}) do |x, obj|
    obj[x.name] = x.klass.base_class.name unless x.polymorphic?
  end
end
association_to_foreign_key_mapping() click to toggle source

@return [Hash{Symbol => String}] Hash with association name mapped to foreign key column name

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 13
def association_to_foreign_key_mapping
  return {} unless model_class

  @association_to_foreign_key_mapping ||= belongs_to_associations.each_with_object({}) do |x, obj|
    obj[x.name] = x.foreign_key
  end
end
association_to_foreign_type_mapping() click to toggle source

@return [Hash{Symbol => String}] Hash with association name mapped to polymorphic foreign key type column name

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 31
def association_to_foreign_type_mapping
  return {} unless model_class

  @association_to_foreign_type_mapping ||= model_class.reflect_on_all_associations.each_with_object({}) do |x, obj|
    obj[x.name] = x.foreign_type if x.polymorphic?
  end
end
belongs_to_associations() click to toggle source

@return [Array<ActiveRecord::Reflection::BelongsToReflection“>] All belongs_to associations

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 8
def belongs_to_associations
  model_class.reflect_on_all_associations.select { |x| x.kind_of?(ActiveRecord::Reflection::BelongsToReflection) }
end
fixed_foreign_keys() click to toggle source

@return [Array<Symbol>] List of all column names that are foreign keys and cannot removed, otherwise we couldn't

save the record
# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 66
def fixed_foreign_keys
  # Foreign keys that are part of a manager_ref must be present, otherwise the record would get lost. This is a
  # minimum check we can do to not break a referential integrity.
  return @fixed_foreign_keys_cache unless @fixed_foreign_keys_cache.nil?

  manager_ref_set = (manager_ref - manager_ref_allowed_nil)
  @fixed_foreign_keys_cache = manager_ref_set.map { |x| association_to_foreign_key_mapping[x] }.compact
  @fixed_foreign_keys_cache += foreign_keys & manager_ref
  @fixed_foreign_keys_cache.map!(&:to_sym)
  @fixed_foreign_keys_cache
end
foreign_key_to_association_mapping() click to toggle source

@return [Hash{String => Hash}] Hash with foreign_key column name mapped to association name

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 22
def foreign_key_to_association_mapping
  return {} unless model_class

  @foreign_key_to_association_mapping ||= belongs_to_associations.each_with_object({}) do |x, obj|
    obj[x.foreign_key] = x.name
  end
end
foreign_keys() click to toggle source

@return [Array<Symbol>] List of all column names that are foreign keys

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 58
def foreign_keys
  return [] unless model_class

  @foreign_keys_cache ||= belongs_to_associations.map(&:foreign_key).map!(&:to_sym)
end
foreign_type_to_association_mapping() click to toggle source

@return [Hash{Symbol => String}] Hash with polymorphic foreign key type column name mapped to association name

# File lib/inventory_refresh/inventory_collection/helpers/associations_helper.rb, line 40
def foreign_type_to_association_mapping
  return {} unless model_class

  @foreign_type_to_association_mapping ||= model_class.reflect_on_all_associations.each_with_object({}) do |x, obj|
    obj[x.foreign_type] = x.name if x.polymorphic?
  end
end