语法错误，意外的 ')'，需要 keyword_then 或 ';'或'\n'

Question

此错误与什么有关？我不知道代码不正确的地方？

用户 索引.html.erb

<%= @events.all.each do |event| %>
  <%= if current_user.activities.include?(event.activity) %>
    <%= event.activity %>
    <%= event.description %>
    <%= event.start_time %>
    <%= event.end_time %>
    <%= event.num_attendees_requested %>
    <%= event.location_name %>
    <%= event.street_address %>
    <%= event.city %>
    <%= event.state %>
  <% end %>
<% end %>

用户控制器

class UsersController < ApplicationController
  def index
    @users = User.all
    @activities = Activity.all
    @events = Event.all
  end

  def show
    @user = current_user
    @events = Event.all
    @activities = Activity.all
  end

Answer 1

<%= if current_user.activities.include?(event.activity) %>

到

<% if current_user.activities.include?(event.activity) %>