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Rails链接到onclick javascript中的ruby变量

ruby-on-rails

Mithun Sreedharan Kuldeep Modi · 技术社区 · 15 年前

这句话有什么不对显示语法错误

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

但是

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

正在正确生成以下代码

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

2 回复 | 直到 15 年前

Chirantan 15 年前

你写的

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

这些炸弹是因为 question.id 是一个Fixnum。你会得到 can't convert Fixnum into String TypeError .

解决这个问题的方法

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

或者

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

这将把问题id作为字符串发送到removeQuestion javascript函数。

或者

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

这将把问题id作为整数发送到removeQuestion javascript函数。

polaiah 12 年前

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

这样就行了

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