Rails - Problems Passing Params Through link_to

Question

I'm trying to update the game_started attribute through a link_to. I've also tried using a form_for via hidden_field with no luck.

I also keep getting the below errors

ArgumentError in GamesController#update

When assigning attributes, you must pass a hash as an argument.

Using Rails 5 and Ruby 2.4

Any explanation would be greatly appreciated!

show.html.erb

<% if @game.game_started %>
  # some code
<% else %>
  <%= link_to "Start The Game", game_path(@game, :game_started => true), :method => :put %>
<% end %>

GamesController

def edit
end

def update
  @game = Game.find(params[:id])

  if @game.update_attributes (params[:game_started])
    redirect_to @game
  end
end

def game_params
  params.require(:game).permit(:game_type, :deck_1, :deck_2, :user_1, :user_2, :game_started)
end

Answer 1

Change it to

if @game.update_attributes (game_started: params[:game_started])
  redirect_to @game
end

Answer 2

In show.html.erb should change to

<%= link_to "Start The Game", game_path(@game, :game => {:game_started => true}), :method => :put %>

In Controller should be

if @game.update_attributes (game_started: params['game']['game_started'])
  redirect_to @game
end

Answer 3

The error is telling you that you're passing the wrong arguments into the update_attributes method call. It's expecting a hash like {game_started: params['game_started']} , while you're just giving it the value of params['game_started'] . When you just give it a value, it won't know which field in the model to update. So change your code to:

```

if @game.update_attributes(game_started: params[:game_started])
   redirect_to @game
end

```