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POError building a theme with middleman (can't convert nil into String), /usr/local/bin/middleman:23:in `load'
 

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  1. POError building a theme with middleman (can't convert nil into String), /usr/local/bin/middleman:23:in `load'
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    <p>I try to built a theme with ruby (css, js, etc) but I have an error that I've spent hours trying to resolve it and reading docs, but without success.</p> <p>Here is the error I get when I do a : bundle exec middleman build --verbose </p> <pre><code>== Request: /pages/forms/forms.html error build/pages/forms/forms.html can't convert nil into String /var/lib/gems/1.9.1/gems/activesupport-3.2.14/lib/active_support/core_ext/string/output_safety.rb:114:in `concat' /var/lib/gems/1.9.1/gems/activesupport-3.2.14/lib/active_support/core_ext/string/output_safety.rb:114:in `safe_concat' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-more/core_extensions/default_helpers.rb:63:in `block in content_tag' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-more/core_extensions/default_helpers.rb:63:in `each' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-more/core_extensions/default_helpers.rb:63:in `content_tag' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/vendored-middleman-deps/padrino-helpers-0.11.2/lib/padrino-helpers/tag_helpers.rb:140:in `safe_content_tag' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/vendored-middleman-deps/padrino-helpers-0.11.2/lib/padrino-helpers/form_helpers.rb:646:in `select_tag' /home/polylan/Documents/dev/core-admin-release/source/pages/forms/forms.html.erb:60:in `block in singletonclass' /home/polylan/Documents/dev/core-admin-release/source/pages/forms/forms.html.erb:65530:in `instance_eval' /home/polylan/Documents/dev/core-admin-release/source/pages/forms/forms.html.erb:65530:in `singletonclass' /home/polylan/Documents/dev/core-admin-release/source/pages/forms/forms.html.erb:65528:in `__tilt_16623600' /var/lib/gems/1.9.1/gems/tilt-1.3.7/lib/tilt/template.rb:144:in `call' /var/lib/gems/1.9.1/gems/tilt-1.3.7/lib/tilt/template.rb:144:in `evaluate' /var/lib/gems/1.9.1/gems/tilt-1.3.7/lib/tilt/template.rb:77:in `render' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/rendering.rb:273:in `render_individual_file' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/rendering.rb:150:in `render_template' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/sitemap/resource.rb:150:in `block in render' /var/lib/gems/1.9.1/gems/activesupport-3.2.14/lib/active_support/notifications.rb:125:in `instrument' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/util.rb:60:in `instrument' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/application.rb:196:in `instrument' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/sitemap/resource.rb:16:in `instrument' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/sitemap/resource.rb:121:in `render' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/request.rb:252:in `process_request' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/request.rb:202:in `block in call!' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/request.rb:201:in `catch' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/request.rb:201:in `call!' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/core_extensions/request.rb:187:in `call' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:138:in `call' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/urlmap.rb:65:in `block in call' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/urlmap.rb:50:in `each' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/urlmap.rb:50:in `call' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-more/extensions/minify_css.rb:48:in `call' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/lint.rb:49:in `_call' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/lint.rb:37:in `call' /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:138:in `call' /var/lib/gems/1.9.1/gems/rack-test-0.6.2/lib/rack/mock_session.rb:30:in `request' /var/lib/gems/1.9.1/gems/rack-test-0.6.2/lib/rack/test.rb:230:in `process_request' /var/lib/gems/1.9.1/gems/rack-test-0.6.2/lib/rack/test.rb:57:in `get' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli/build.rb:138:in `render_to_file' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli/build.rb:280:in `block in execute!' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli/build.rb:277:in `each' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli/build.rb:277:in `execute!' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli/build.rb:199:in `invoke!' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/actions.rb:95:in `action' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli/build.rb:64:in `build' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/command.rb:27:in `run' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/invocation.rb:120:in `invoke_command' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor.rb:363:in `dispatch' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/base.rb:439:in `start' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli.rb:77:in `method_missing' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/command.rb:29:in `run' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/command.rb:128:in `run' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/invocation.rb:120:in `invoke_command' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor.rb:363:in `dispatch' /var/lib/gems/1.9.1/gems/thor-0.18.1/lib/thor/base.rb:439:in `start' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/lib/middleman-core/cli.rb:22:in `start' /var/lib/gems/1.9.1/gems/middleman-core-3.1.4/bin/middleman:18:in `&lt;top (required)&gt;' /usr/local/bin/middleman:23:in `load' /usr/local/bin/middleman:23:in `&lt;main&gt;' </code></pre> <p>Here is the result of : bundle install</p> <pre><code>Using i18n (0.6.5) Using multi_json (1.7.9) Using activesupport (3.2.14) Using chunky_png (1.2.8) Using coffee-script-source (1.6.3) Using execjs (1.4.0) Using coffee-script (2.2.0) Using fssm (0.2.10) Using sass (3.2.10) Using compass (0.12.2) Using ffi (1.9.0) Using tilt (1.3.7) Using haml (4.0.3) Using hike (1.2.3) Using json (1.7.7) Using kramdown (1.1.0) Using rb-fsevent (0.9.3) Using rb-inotify (0.9.1) Using rb-kqueue (0.2.0) Using listen (1.2.3) Using bundler (1.3.5) Using rack (1.5.2) Using rack-test (0.6.2) Using thor (0.18.1) Using middleman-core (3.1.4) Using middleman-more (3.1.4) Using sprockets (2.10.0) Using sprockets-helpers (1.0.1) Using sprockets-sass (1.0.1) Using middleman-sprockets (3.1.4) Using uglifier (2.1.2) Using middleman (3.1.4) Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed. </code></pre> <p>My Gemfile</p> <pre><code>source 'http://rubygems.org' gem "middleman", "~&gt;3.1.4" # Live-reloading plugin gem "middleman-livereload", "~&gt; 3.1.0" gem 'json', '~&gt; 1.7.7' gem 'therubyracer' if RUBY_PLATFORM =~ /linux/i gem 'rb-inotify', '~&gt; 0.9' else gem 'rb-inotify' end </code></pre> <p>I use : ruby 1.9.1 ruby1.9.1-dev middleman (last version) nodejs therubyracer execjs</p> <p><strong>UPDATE 1 :</strong></p> <p>Thanks to j03w comment the error looks like to be indeed to this portion of code in forms.html.erb</p> <pre><code>&lt;li&gt; &lt;label&gt;Dropdown with search:&lt;/label&gt; &lt;%= select_tag :colors, options: @colorList.shuffle, class: "chzn-select" %&gt; &lt;/li&gt; &lt;li&gt; &lt;label&gt;Dropdown menu:&lt;/label&gt; &lt;%= select_tag :colors, options: @colorList.shuffle, class: "uniform" %&gt; &lt;/li&gt; </code></pre> <p>Here is a part of my config.rb where the array is :</p> <pre><code>@release = false @colorList = ["Aero blue","Air Force blue (RAF)","Air Force blue (USAF)","Air superiority blue","Alabama Crimson","Alice blue","Alizarin crimson","Alloy orange","Almond","Amaranth","Amazon","Amber", "SAE/ECE Amber (color)","American rose","Amethyst","Android Green","Anti-flash white","Antique brass","Antique bronze","Antique fuchsia "] </code></pre> <p>If you need more information, feel free to ask.</p> <p>Any help would be very appreciated if you had de the same problem or any idea about that error.</p> <p>Thanks in advance.</p> <p>Yann</p>
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    1. This table or related slice is empty.
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    1. USyann
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. CO`/home/polylan/Documents/dev/core-admin-release/source/pages/forms/forms.html.erb:60` you are missing something or passing something `nil` to `select_tag` I think…
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      1. POError building a theme with middleman (can't convert nil into String), /usr/local/bin/middleman:23:in `load'
      1. USj03w
    2. COhello, thanks for your comment, I've updated (UPDATE 1) the question with more information, because for me the table is called correctly, but when i remove "options: @colorList.shuffle" it's working.
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      1. POError building a theme with middleman (can't convert nil into String), /usr/local/bin/middleman:23:in `load'
      1. USyann
 

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