Radio buttons in scaffold

rubyonrails-talk
1

I was trying to create a radio button in scaffold form but got error here is the form codes- <%= form_for(@value) do |f| %>   <% if @value.errors.any? %>     <div id="error_explanation">       <h2><%= pluralize(@value.errors.count, "error") %> prohibited this value from being saved:</h2>

      <ul>       <% @value.errors.full_messages.each do |msg| %>         <li><%= msg %></li>       <% end %>       </ul>     </div>   <% end %>

  <div class="field">     <%= f.label :fname %><br />     <%= f.text_field :fname %>   </div>    <div class="field">     <%= f.label :lname %><br />     <%= form.radio_button :lname, 'yes I have' %> <!-- <label id="helper.radio"/> -->   <%= form.label :red %>   <%= form.radio_button :lname, 'No I don't' %>   <%= form.label :yellow %>   </div>

  <div class="actions">     <%= f.submit %>   </div> <% end %> but when I clicked on new button. It's giving me this error- SyntaxError in Values#new

Showing /home/vmuser/workspace/trial-9/app/views/values/_form.html.erb where line #22 raised:

/home/vmuser/workspace/trial-9/app/views/values/_form.html.erb:22: syntax error, unexpected tIDENTIFIER, expecting ')' ...adio_button :lname, 'No I don't' );@output_buffer.safe_conca... ... ^ /home/vmuser/workspace/trial-9/app/views/values/_form.html.erb:28: unknown regexp options - dv unmatched close parenthesis: /div>

  <div class="actions">     ');@output_buffer.append= ( f.submit );@output_buffer.safe_concat(' ');@output_buffer.safe_concat(' </i /home/vmuser/workspace/trial-9/app/views/values/_form.html.erb:29: unterminated string meets end of file /home/vmuser/workspace/trial-9/app/views/values/_form.html.erb:29: syntax error, unexpected $end, expecting ')'

Extracted source (around line #22):

19: <%= f.label :lname %><br /> 20: <%= form.radio_button :lname, 'yes I have' %> <!-- <label id="helper.radio"/> --> 21: <%= form.label :red %> 22: <%= form.radio_button :lname, 'No I don't' %> 23: <%= form.label :yellow %> 24: </div> 25:

2

Surely you can see the error here, you have single quote character in the middle of a string using single quote to identify it. Ruby will see the string as 'No I don' and is then confused by the t character. Use "No I don't" instead.

Colin

3

Thanks....I fixed it . But now it's giving me this error-

Trace of template inclusion: app/views/values/new.html.erb

undefined method `radio_button' for nil:NilClass

Extracted source (around line #20):

17: </div> 18: <div class="field"> 19: <%= f.label :lname %><br /> 20: <%= form.radio_button :lname, "yes I have"%> <!-- <label id="helper.radio"/> --> 21: <%= form.label :red %> 22: <%= form.radio_button :lname, "No I don't"%> 23: <%= form.label :yellow %>

Trace of template inclusion: app/views/values/new.html.erb

Rails.root: /home/vmuser/workspace/trial-9 Application Trace | Framework Trace | Full Trace

app/views/values/_form.html.erb:20:in `block in _app_views_values__form_html_erb__544020744__641603598' app/views/values/_form.html.erb:1:in `_app_views_values__form_html_erb__544020744__641603598' app/views/values/new.html.erb:3:in `_app_views_values_new_html_erb__132110805__641585578' app/controllers/values_controller.rb:31:in `new'

4

Once again the error is not difficult to see if you look carefully. The error says undefined method radio_button for something that is nil and tells you the line. Look at the line, what variable are you calling radio_button on? What is the value of that variable?

Colin

5

Thanks.....I got it....actually last few days I was trying to fix the issue and tried to type lots of stuffs...my mistake was mainly cotton marks.....thanks for your assistance ...I like this forum....

6

It is always worth looking at the error carefully and trying to work out what it means. That is not always obvious but will get easier with practice.

Colin