Module: ViewModel::ActiveRecord::CollectionNestedController

Extended by:
ActiveSupport::Concern
Includes:
NestedControllerBase
Included in:
Controller
Defined in:
lib/view_model/active_record/collection_nested_controller.rb

Overview

Inherits the following routes to manipulate children directly: POST /children #create – create or update without parent GET /children #index – list all child models regardless of parent GET /children/:id #show DELETE /children/:id #destroy

Instance Method Summary collapse

Instance Method Details

#append(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context) ⇒ Object

Deserialize items of the associated type and append them to the owner’s collection.



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# File 'lib/view_model/active_record/collection_nested_controller.rb', line 41

def append(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context)
  assoc_view = nil
  pre_rendered = owner_viewmodel.transaction do
    update_hash, refs = parse_viewmodel_updates

    before = parse_relative_position(:before)
    after  = parse_relative_position(:after)

    if before && after
      raise ViewModel::DeserializationError::InvalidSyntax.new("Can not provide both `before` and `after` anchors for a collection append")
    end

    owner_view = owner_viewmodel.find(owner_viewmodel_id, eager_include: false, serialize_context: serialize_context)

    assoc_view = owner_view.append_associated(association_name,
                                              update_hash,
                                              references: refs,
                                              before:     before,
                                              after:      after,
                                              deserialize_context: deserialize_context)
    ViewModel::Callbacks.wrap_serialize(owner_view, context: serialize_context) do
      child_context = owner_view.context_for_child(association_name, context: serialize_context)
      ViewModel.preload_for_serialization(assoc_view, serialize_context: child_context)
      assoc_view = yield(assoc_view) if block_given?
      prerender_viewmodel(assoc_view, serialize_context: child_context)
    end
  end
  render_json_string(pre_rendered)
  assoc_view
end

#disassociate(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context) ⇒ Object 



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# File 'lib/view_model/active_record/collection_nested_controller.rb', line 72

def disassociate(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context)
  owner_viewmodel.transaction do
    owner_view = owner_viewmodel.find(owner_viewmodel_id, eager_include: false, serialize_context: serialize_context)
    owner_view.delete_associated(association_name, viewmodel_id, type: viewmodel_class, deserialize_context: deserialize_context)
    render_viewmodel(nil)
  end
end

#disassociate_all(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context) ⇒ Object 



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# File 'lib/view_model/active_record/collection_nested_controller.rb', line 35

def disassociate_all(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context)
  destroy_association(true, serialize_context: serialize_context, deserialize_context: deserialize_context)
end

#index_associated(scope: nil, serialize_context: new_serialize_context, &block) ⇒ Object 



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# File 'lib/view_model/active_record/collection_nested_controller.rb', line 25

def index_associated(scope: nil, serialize_context: new_serialize_context, &block)
  show_association(scope: scope, serialize_context: serialize_context, &block)
end

#replace(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context, &block) ⇒ Object

Deserialize items of the associated type and associate them with the owner, replacing previously associated items.



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# File 'lib/view_model/active_record/collection_nested_controller.rb', line 31

def replace(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context, &block)
  write_association(serialize_context: serialize_context, deserialize_context: deserialize_context, &block)
end