Yield should test if there's a block to yield to in persistence/update

In lib / dynamoid / persistence.rb, line 185, there's a "yield t". There's no check to see if there's a block to yield to. If there's no block passed in, this fails with

LocalJumpError: no block given (yield)

    def update!(conditions = {}, &block)
      run_callbacks(:update) do
        options = range_key ? {:range_key => dump_field(self.read_attribute(range_key), self.class.attributes[range_key])} : {}
        new_attrs = Dynamoid::Adapter.update_item(self.class.table_name, self.hash_key, options.merge(:conditions => conditions)) do |t|
          if(self.class.attributes[:lock_version])
            raise "Optimistic locking cannot be used with Partitioning" if(Dynamoid::Config.partitioning)
            t.add(lock_version: 1)
          end

          yield t
        end
        load(new_attrs)
      end
    end

The way this code got run as "@event.update(event_params)" without a block was in some auto-generated Rails code in my project's EventController. Here's the controller method that was autogenerated.

  def update
    respond_to do |format|
      if @event.update(event_params)
        format.html { redirect_to @event, notice: 'Event was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: 'edit' }
        format.json { render json: @event.errors, status: :unprocessable_entity }
      end
    end
  end

It's easy enough for me to do update differently, I don't want to do it the boilerplate way anyway. However, I thought I'd point out what's going on here, and that others might run into the same issue pretty fast if they're following Rails standard practices.

Veraticus / Dynamoid

Yield should test if there's a block to yield to in persistence/update #160