Class: StoreTasks

Inherits:
Volt::TaskHandler show all
Defined in:
app/volt/tasks/store_tasks.rb

Instance Method Summary collapse

Methods inherited from Volt::TaskHandler

inherited, known_handlers, method_missing, #store

Constructor Details

#initialize(channel = nil, dispatcher = nil) ⇒ StoreTasks

Returns a new instance of StoreTasks.



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# File 'app/volt/tasks/store_tasks.rb', line 5

def initialize(channel = nil, dispatcher = nil)
  @channel = channel
  @dispatcher = dispatcher
end

Instance Method Details

#db ⇒ Object 



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# File 'app/volt/tasks/store_tasks.rb', line 10

def db
  @@db ||= Volt::DataStore.fetch
end

#delete(collection, id) ⇒ Object 



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# File 'app/volt/tasks/store_tasks.rb', line 57

def delete(collection, id)
  db[collection].remove('_id' => id)

  QueryTasks.live_query_pool.updated_collection(collection, @channel)
end

#load_model(collection, path, data) ⇒ Object 



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# File 'app/volt/tasks/store_tasks.rb', line 14

def load_model(collection, path, data)
  model_name = collection.singularize.camelize

  # Fetch the model
  collection = store.send(:"_#{path[-2]}")

  # See if the model has already been made
  model = collection.find_one(_id: data[:_id])

  # Otherwise assign to the collection
  model ||= collection

  # Create a buffer
  buffer = model.buffer

  # Assign the data
  buffer.attributes = data

  buffer
end

#save(collection, path, data) ⇒ Object 



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# File 'app/volt/tasks/store_tasks.rb', line 35

def save(collection, path, data)
  data = data.symbolize_keys
  model = nil
  Volt::Model.nosave do
    model = load_model(collection, path, data)
  end

  # On the backend, the promise is resolved before its returned, so we can
  # return from within it.
  #
  # Pass the channel as a thread-local so that we don't update the client
  # who sent the update.
  Thread.current['in_channel'] = @channel
  promise = model.save!.then do |result|
    return nil
  end

  Thread.current['in_channel'] = nil

  promise
end