ruby - Updating a rails attribute through a model association -


i have 2 models shop , user. shop has_many users , user has_one shop. i'm trying create button on shop/show allows user choose shop. button should send parameter shop_id users_controller#update_shop changes user.shop_id id of shop on page.

the current method in users_controller#update_shop following:

def update_shop   @user = user.find(params[:id])   @user.update_attributes(shop_id: params[:shop][:id])   flash[:success] = "added shop!" end

and button on show/shop this:

  <%= form_for user.update_shop, remote: true |f| %>     <%= f.hidden_field :shop_id, value: @shop.id %>     <%= f.submit 'add shop', :class => 'button blue-button' %>   <% end %>

i'm getting error nomethoderror in shopscontroller#show undefined methodupdate_shop' #`. method defined in users controller though.

i understand there more efficient way update user.shop_id through association, tips on doing or getting work appreciated.

i think it's better have link post method in place of form:

<%= link_to 'add shop', update_shop_url(id: @user.id, shop_id: @shop.id, class: 'button blue-button', data: { method: 'post' } %>

with setup should change controller method well:

def update_shop   ...   @user.update_attributes(shop_id: params[:shop_id])   ... end

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