What's wrong with my RoR custom tag logic?

[moephan]

I would like my web site to include a user's community rating along with their user name whenever their user name is displayed. Since I show the user name in many places on the site, it seemed that a custom tag would be a natural solution. This is my first custom tag in RoR.

First, I created the following method in application_helper.rb:


def user_tag()
concat("output goes here")
end


Then I try to use that in one of my layouts:


<%= user_tag %>


But then I get the following error:


wrong number of arguments (1 for 2)

Extracted source (around line #52):

49: <TD>
50: <DIV id="userControl">
51: <% if @signed_in %>
52: <%= user_tag %>
53: <SPAN class="sentenceText">signed in as <SPAN class="emphasis"><%= @username %>(<%= @user.rating %>)</SPAN></SPAN>
54: <FORM action="/user/signout" method="post">
55: <BUTTON type="submit" class="secondary">Sign Out</BUTTON>


I've tried adding parameters to the definition, but I always end up with the wrong number of arguments.

Does anyone know what I am doing wrong? Thanks.

Cheers, Rick

[skeeterbug]

Your problem isn't the RHTML. The problem is how you use concat.

http://www.techotopia.com/index.php/Ruby_String_Concatenation_and_Comparison




def user_tag()
"output goes ".concat("here")
end




<%= user_tag() %>


Works fine for me.

[moephan]

Actually, that whole concat thing was totally unnecessary. The sample I was using was a little confusing. So often things in RoR turn out way easier than I was expecting.

Cheers, Rick