Rails link_to Ruby-Variable in Onclick Javascript

Question

Was mit dieser Aussage falsch ist Es zeigt Syntaxfehler

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion("+ question.id +");return false;"%> 

Aber

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion();return false;"%> 

korrekt den Code unten zu erzeugen

<a title="Delete" onclick="removeQuestion();return false" class="action remove" href="/quizzes/remove/1"><img src="/images/cancel.png?1290165811" alt="Cancel"></a> 

Answer 1

Was du geschrieben hast

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion("+ question.id +");return false;"%> 

Diese Bomben, weil question.id ist ein Fixnum. Sie würden can't convert Fixnum into StringTypeError erhalten.

Möglichkeiten, dies Dadurch wird die Frage-ID als String an Ihre removeQuestion Javascript-Funktion senden

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion("+ question.id.to_s +");return false;"%> 

ODER

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion('#{question.id}');return false;"%> 

zu lösen.

ODER

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion(#{question.id});return false;"%> 

Dies wird die Frage-ID als Integer an Ihre removeQuestion Javascript-Funktion senden.

Answer 2

<%= link_to image_tag('cancel.png'), {:action => 'remove', :id => question.id}, :title=>'Delete', :class=>'action', :onclick=>"removeQuestion($(this).attr('id'));return false;"%> 

Dies funktioniert