Class: Terrestrial::Configurations::ConventionalAssociationConfiguration

Inherits:
Object
  • Object
show all
Defined in:
lib/terrestrial/configurations/conventional_association_configuration.rb

Constant Summary collapse

DEFAULT = 
Module.new

Instance Method Summary collapse

Constructor Details

#initialize(inflector, datastore, mapping_name, mappings) ⇒ ConventionalAssociationConfiguration

Returns a new instance of ConventionalAssociationConfiguration.



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# File 'lib/terrestrial/configurations/conventional_association_configuration.rb', line 13

def initialize(inflector, datastore, mapping_name, mappings)
  @inflector = inflector
  @datastore = datastore
  @target_mapping = mappings.fetch(mapping_name)
  @mappings = mappings
end

Instance Method Details

#belongs_to(association_name, key: DEFAULT, foreign_key: DEFAULT, mapping_name: DEFAULT) ⇒ Object 



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# File 'lib/terrestrial/configurations/conventional_association_configuration.rb', line 51

def belongs_to(association_name, key: DEFAULT, foreign_key: DEFAULT, mapping_name: DEFAULT)
  defaults = {
    key: :id,
    foreign_key: [association_name, "_id"].join.to_sym,
    mapping_name: pluralize(association_name).to_sym,
  }

  specified = {
    mapping_name: mapping_name,
    foreign_key: foreign_key,
    key: key,
  }.reject { |_k,v|
    v == DEFAULT
  }

  config = defaults.merge(specified)

  associated_mapping_name = config.fetch(:mapping_name)
  associated_mapping = mappings.fetch(associated_mapping_name)

  belongs_to_mapper(**config)
end

#has_many(association_name, key: DEFAULT, foreign_key: DEFAULT, mapping_name: DEFAULT, order_fields: DEFAULT, order_direction: DEFAULT) ⇒ Object 



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# File 'lib/terrestrial/configurations/conventional_association_configuration.rb', line 25

def has_many(association_name, key: DEFAULT, foreign_key: DEFAULT, mapping_name: DEFAULT, order_fields: DEFAULT, order_direction: DEFAULT)
  defaults = {
    mapping_name: association_name,
    foreign_key: [singular_name, "_id"].join.to_sym,
    key: :id,
    order_fields: [],
    order_direction: "ASC",
  }

  specified = {
    mapping_name: mapping_name,
    foreign_key: foreign_key,
    key: key,
    order_fields: order_fields,
    order_direction: order_direction,
  }.reject { |_k,v|
    v == DEFAULT
  }

  config = defaults.merge(specified)
  associated_mapping_name = config.fetch(:mapping_name)
  associated_mapping = mappings.fetch(associated_mapping_name)

  has_many_mapper(**config)
end

#has_many_through(association_name, key: DEFAULT, foreign_key: DEFAULT, mapping_name: DEFAULT, through_table_name: DEFAULT, association_key: DEFAULT, association_foreign_key: DEFAULT, order_fields: DEFAULT, order_direction: DEFAULT) ⇒ Object 



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# File 'lib/terrestrial/configurations/conventional_association_configuration.rb', line 74

def has_many_through(association_name, key: DEFAULT, foreign_key: DEFAULT, mapping_name: DEFAULT, through_table_name: DEFAULT, association_key: DEFAULT, association_foreign_key: DEFAULT, order_fields: DEFAULT, order_direction: DEFAULT)
  # TODO: join_dataset as mutually exclusive option with join_table_name
  defaults = {
    mapping_name: association_name,
    key: :id,
    association_key: :id,
    foreign_key: [singular_name, "_id"].join.to_sym,
    association_foreign_key: [singularize(association_name), "_id"].join.to_sym,
    order_fields: [],
    order_direction: "ASC",
  }

  specified = {
    mapping_name: mapping_name,
    key: key,
    association_key: association_key,
    foreign_key: foreign_key,
    association_foreign_key: association_foreign_key,
    order_fields: order_fields,
    order_direction: order_direction,
  }.reject { |_k,v|
    v == DEFAULT
  }

  config = defaults.merge(specified)

  associated_mapping = mappings.fetch(config.fetch(:mapping_name))
  default_through_table_name = [associated_mapping.name, target_mapping.name].sort.join("_to_").to_sym

  if through_table_name == DEFAULT
    through_table_name = default_through_table_name
  end

  join_mapping = create_virtual_mapping(
    default_mapping_name: default_through_table_name,
    namespace: through_table_name,
    primary_key: [config[:foreign_key], config[:association_foreign_key]],
  )

  mappings[join_mapping.name] = join_mapping

  join_dataset = datastore[through_table_name.to_sym]

  config = config.merge(
    join_mapping_name: join_mapping.name,
    join_dataset: join_dataset,
  )

  has_many_through_mapper(**config)
end