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PODont understand why I'm encountering this TypeError (Can't convert nil into String)
 

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  1. PODont understand why I'm encountering this TypeError (Can't convert nil into String)
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    <p>Very simple process I'm trying to implement. On a home page or landing page I want to capture emails for an email list. If the email passes validation, it gets saved, Great! Everything works fine when there are no errors.</p> <p>When there is an error like only inputting an 'a' character as shown in the log below. Or even just an empty string I continually get the same <code>TypeError</code> (can't convert nil to String)</p> <p>Here is the log:</p> <pre><code>Started GET "/" for 127.0.0.1 at 2013-06-13 13:48:56 -0400 Connecting to database specified by database.yml Processing by HighVoltage::PagesController#show as HTML Parameters: {"id"=&gt;"home"} Rendered shared/_error_messages.html.erb (0.4ms) Rendered layouts/_visitor_form.html.erb (7.9ms) Rendered pages/home.html.erb within layouts/application (13.1ms) Completed 200 OK in 82ms (Views: 39.6ms | ActiveRecord: 1.8ms) [2013-06-13 13:48:57] WARN Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true Started POST "/visitors" for 127.0.0.1 at 2013-06-13 13:48:59 -0400 Processing by VisitorsController#create as HTML Parameters: {"utf8"=&gt;"✓",authenticity_token"=&gt;"esTPNzNtkmNPTe7Jh+E2aDHNrgocU5Z8g49Nj0QiOhQ=", "visitor"=&gt;{"email"=&gt;""}, "commit"=&gt;"Add to newsletter list"} (0.1ms) begin transaction Visitor Exists (0.2ms) SELECT 1 AS one FROM "visitors" WHERE LOWER("visitors"."email") = LOWER('') LIMIT 1 (0.1ms) rollback transaction Completed 500 Internal Server Error in 39ms TypeError (can't convert nil into String): app/controllers/visitors_controller.rb:12:in `create' </code></pre> <p>Here is the visitors_controller.rb</p> <pre><code> def create @visitor = Visitor.new(params[:visitor]) if @visitor.save flash[:success] = "Your email has been added!" redirect_to '/' else render '/' end end </code></pre> <p>I've also tried </p> <pre><code>@visitor = Visitor.new(:visitor =&gt; params[:visitor][:email]) </code></pre> <p>and a few other sequences with no success.</p> <p>How can I get the unsuccessful saves to gracefully show the validation errors and allow the user to resubmit.</p> <p>Here is the layout:</p> <pre><code> &lt;%= form_for Visitor.new do |f| %&gt; &lt;%= render 'shared/error_messages' %&gt; &lt;%= f.label :email %&gt; &lt;%= f.text_field :email %&gt; &lt;%= f.submit "Add to newsletter list", class: "btn btn-large btn-primary" %&gt; &lt;% end %&gt; </code></pre> <p>Maybe the high_voltage gem is screwing me up. I don't have enough experience to know.</p> <p>UPDATE:</p> <pre><code>rake routes visitors POST /visitors(.:format) visitors#create home /home(.:format) pages#home root / high_voltage/pages#show {:id=&gt;"home"} page GET /pages/*id high_voltage/pages#show </code></pre>
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    1. PO
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      1. PTAnswer
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    1. PTQuestion
    1. USJoe Crocetta
    1. USJoe Crocetta
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    1. PO
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      1. PODont understand why I'm encountering this TypeError (Can't convert nil into String)
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      1. VTUpMod
    1. COPaste whole backtrace. BTW what does `render '/'` mean?
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      1. PODont understand why I'm encountering this TypeError (Can't convert nil into String)
      1. USMarek Lipka
    2. COI just wanted to go back to the same page, which would be '/'. I placed this layout on the home or landing page. I think you're on the right track because I'm not so sure about my routes. My Visitor doesn't have it's own view and I'm not sure about the routes.
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      1. PODont understand why I'm encountering this TypeError (Can't convert nil into String)
      1. USJoe Crocetta
 

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