Ruby On Rails image_path

Question

link_to（image_tag（“ icons /＃{icon_name} .png”），url_or_object，options）我试图像这样使用它，但是当我进入项目时，我看到的像这样http://prntscr.com/329yzz我看不到图片请帮助我，我也是Ruby的初学者请帮助我

Answer 1

link_to takes an optional block, if you need anything more complicated than text:

link_to url_or_object, options do
  image_tag("icons/#{icon_name}.png")
end

Since those method is being used within the views, link_to is using capture to evaluate the block. Hence it can be used like:

<%= link_to url_or_object, options do %>
  <div class='wrapper'>
    <label>Some text</label>
    <%= image_tag("icons/#{icon_name}.png") %>
  </div>
<% end %>

Answer 2

You are getting raw html output.

Use html_safe as shown below:

EDIT As per OP's comments, html_safe was required in project_title_links method to convert the link returned from link_to_icon into an HTML safe string(DOM ready):

def link_to_icon(icon_name, url_or_object,options={})     
  link_to(image_tag("icons/#{icon_name}.png", ),url_or_object,options)    
end 

def project_title_links(project) 
  content_tag :h1 do [project.title, link_to_icon('show',project) ].join(' ').html_safe end     
end