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Ruby Build a Simple Ruby on Rails Application Frontend Development Updating the Index Page

Larry Lee
Larry Lee
1,386 Points
Posted by Larry Lee
Larry Lee
1,386 Points

NoMethodError in Statuses#index undefined method `round' for "ago":String

I'm getting the following error when following along with this tutorial and I'm not sure what I might be doing wrong. Any help would be appreciated. Thanks.

NoMethodError in Statuses#index

Showing /Users/larrylee/Documents/juntbook/app/views/statuses/index.html.erb where line #10 raised:

undefined method `round' for "ago":String Extracted source (around line #10):

7: <strong><%= status.name %></strong> 8: <p><%= status.content %></p> 9: <div class="meta"> 10: <%= link_to time_ago_in_words (status.created_at) + "ago", status %> 11: <span class="admin"> | 12: <%= link_to "Edit", edit_status_path(status) %> | 13: <%= link_to "Delete", status, method: :delete, data: {confirm: "Are you sure you want to delete this status?"} %>

3 Answers

dan schmidt
dan schmidt
2,576 Points
dan schmidt
dan schmidt
2,576 Points

Well, somewhere in the code, rails is attempting to call "ago".round and is throwing a NoMethodError as it should. My rails is pretty rusty, but my first guess is that it is failing to parse your link_to invocation correctly. Trying adding parens around the parameters like so:

link_to( time_ago_in_words( status.created_at ).concat( "ago" ), status )

At least, I think that is what you're trying to call there, lol. It's a lot packed into that erb tag.

Larry Lee
Larry Lee
1,386 Points
Larry Lee
Larry Lee
1,386 Points

Thanks Dan, that worked. I know you say it should have given me an error based on my code which is weird because I typed this exactly as it was shown in the Ruby on Rails tutorial. I'm not sure, maybe it has something to do with the version of Ruby/Rails I'm using? I upgraded both after starting the tutorial. I've got to research to see where I went wrong. Thanks again!

dan schmidt
dan schmidt
2,576 Points
dan schmidt
dan schmidt
2,576 Points

Yea, I didn't mean to infer it was some huge mistake on your part and yea, it is very well likely due to different versions of rails being used.

The thing is ruby has a bunch of optional syntax in certain contexts and a lot of over loaded methods. If you are coding in the "haiku" style by leaving off parens and you are getting confusing errors, the first thing you should always try is using parens instead.

dan schmidt
dan schmidt
2,576 Points
dan schmidt
dan schmidt
2,576 Points

And what I meant by saying that it should throw an error is not based on your code, but based on the fact that either erb or rails was calling the round method on the string "ago". String objects do not respond to the method round so they correctly should throw the NoMethodError

Larry Lee
Larry Lee
1,386 Points
Larry Lee
Larry Lee
1,386 Points

Well that makes sense. I'm new to ruby and rails so this was helpful!