Module: ROM::ConfigurationDSL

Included in:
Configuration
Defined in:
core/lib/rom/configuration_dsl.rb,
core/lib/rom/configuration_dsl/command.rb,
core/lib/rom/configuration_dsl/relation.rb,
core/lib/rom/configuration_dsl/mapper_dsl.rb,
core/lib/rom/configuration_dsl/command_dsl.rb

Overview

This extends Configuration class with the DSL methods

Defined Under Namespace

Classes: Command, CommandDSL, MapperDSL, Relation

Instance Method Summary collapse

Instance Method Details

#commands(name, &block) ⇒ Object

Command definition DSL

Examples:

setup.commands(:users) do
  define(:create) do
    input NewUserParams
    result :one
  end

  define(:update) do
    input UserParams
    result :many
  end

  define(:delete) do
    result :many
  end
end


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# File 'core/lib/rom/configuration_dsl.rb', line 51

def commands(name, &block)
  register_command(*CommandDSL.new(name, default_adapter, &block).command_classes)
end

#mappers(&block) ⇒ Object

Mapper definition DSL



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# File 'core/lib/rom/configuration_dsl.rb', line 58

def mappers(&block)
  register_mapper(*MapperDSL.new(self, mapper_classes, block).mapper_classes)
end

#plugin(adapter, spec, &block) ⇒ Plugin

Configures a plugin for a specific adapter to be enabled for all relations

Examples:

config = ROM::Configuration.new(:sql, 'sqlite::memory')

config.plugin(:sql, relations: :instrumentation) do |p|
  p.notifications = MyNotificationsBackend
end

config.plugin(:sql, relations: :pagination)

Parameters:

  • adapter (Symbol) —

    The adapter identifier

  • spec (Hash<Symbol=>Symbol>) —

    Component identifier => plugin identifier

Returns:



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# File 'core/lib/rom/configuration_dsl.rb', line 79

def plugin(adapter, spec, &block)
  type, name = spec.flatten(1)
  plugin = plugin_registry[type].adapter(adapter).fetch(name) do
    plugin_registry[type].fetch(name)
  end

  if block
    register_plugin(plugin.configure(&block))
  else
    register_plugin(plugin)
  end
end

#relation(name, options = EMPTY_HASH, &block) ⇒ Object

Relation definition DSL

Examples:

setup.relation(:users) do
  def names
    project(:name)
  end
end


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# File 'core/lib/rom/configuration_dsl.rb', line 22

def relation(name, options = EMPTY_HASH, &block)
  klass_opts = { adapter: default_adapter }.merge(options)
  klass = Relation.build_class(name, klass_opts)
  klass.schema_opts(dataset: name, relation: name)
  klass.class_eval(&block) if block
  register_relation(klass)
  klass
end