Error with Ejs: Cannot read equals of undefined

[twhite96]

The equals method in the show template is throwing an error: cannot read 'equals' of undefined. I have the same file as you but I am not sure what's happening.

  </div>
  <div class="col-md-9">
    <div class="thumbnail">
      <img class="img-responsive" src="<%= campground.image %>">
      <div class="caption-full">
        <h4 class="pull-right">
          $<%= campground.cost %>/night
        </h4>
        <h4><a><%=campground.name%></a></h4>
        <p><%= campground.description %></p>
        <p>
          <em>Submitted by: <%= campground.author.username %>, <%= moment(campground.createdAt).fromNow() %></em>
        </p>
        <% if(currentUser && campground.author.id.equals(currentUser._id) || currentUser && currentUser.isAdmin){ %>
        <a class="btn btn-warning" href="/campgrounds/<%= campground._id %>/edit">Edit</a>
        <form action="/campgrounds/<%= campground._id %>?_method=DELETE" method="POST" class="delete-form">
          <button class="btn btn-danger">Delete</button>
        </form>
        <% } %>
      </div>
    </div>
    <div class="well">
      <div class="text-right">
        <a class="btn btn-success" href="/campgrounds/<%= campground._id %>/comments/new">Add New Comment</a>
      </div>
      <hr>
      <% campground.comments.forEach(function(comment){ %>
      <div class="row">
        <div class="col-md-12">
          <strong><%= comment.author.username %></strong>
          <span class="pull-right"><%= moment(comment.createdAt).fromNow() %></span>
          <div>
           <%= comment.text %> 

           <% if(currentUser && comment.author.id.equals(currentUser._id) || currentUser && currentUser.isAdmin){ %>
            <div class="pull-right">
              <a href="/campgrounds/<%=campground._id%>/comments/<%=comment._id%>/edit" class="btn btn-xs btn-warning">EDIT</a>
              <form class="delete-form" action="/campgrounds/<%=campground._id%>/comments/<%=comment._id%>?_method=DELETE" method="POST">
                <button class="btn btn-xs btn-danger">DELETE</button>
              </form>
            </div>
          <% } %>
          <hr>
        </div>
      </div>
    </div>
    <% }) %>
  </div>
</div>
</div>

[twhite96]

Found the answer in the comments on The Web Developer Bootcamp. Closing this now.

[jiaquan1]

Hi I got the same error, did not find the answer yet. Could you help to put the link of the answer? Great thanks!

[INDALPHA]

can you tell the solution?

[twhite96]

I'm sorry guys but I haven't opened this in years now. I'll reopen this just in case one of the maintainers can help out.