Ruby on rails Rails cocoon嵌套字段,在编辑窗体上渲染每个字段旁边的现有图像
我正在使用Ruby on rails Rails cocoon嵌套字段,在编辑窗体上渲染每个字段旁边的现有图像,ruby-on-rails,cocoon-gem,Ruby On Rails,Cocoon Gem,我正在使用cocoon gem向产品添加附件。这是我在新产品表单中呈现cocoon嵌套表单字段的部分 <div id="attachments"> <%= f.label :images, required: true %> <%= render 'products/attachment_fields', form: attachment %> <% end %> <div class="links" id
cocoon gem
向产品添加附件。这是我在新产品表单中呈现cocoon嵌套表单字段的部分
<div id="attachments">
<%= f.label :images, required: true %>
<%= render 'products/attachment_fields', form: attachment %>
<% end %>
<div class="links" id="add_attachment" style="display: inline; float: right;">
<%= link_to_add_association 'add more images', f, :attachments, form_name: 'form' %>
</div>
</div>
<div id="attachments">
<%= f.label :images, required: true %>
<%= render 'products/attachment_fields', form: attachment %>
<% end %>
<div class="links" id="add_attachment" style="display: inline; float: right;">
<%= link_to_add_association 'add more images', f, :attachments, form_name: 'form' %>
</div>
</div>
这是部分原因:
<div class="nested-fields">
<span class="control-fileupload">
<%= form.input :images,:label => "Choose a file", as: :file, :input_html => { class: "file_input" } %>
</span>
<%= link_to_remove_association "remove", form %>
</div>
“选择一个文件”,如::file,:input_html=>{class:“file_input”}%>
以上所有工作都很好。产品也随附件一起创建
现在我正在尝试开发“编辑产品”表单,在这里我可以编辑产品和附件。这件也可以用。我唯一的麻烦是。。。。如何将每个现有附件图像添加到编辑表单中的关联cocoon嵌套字段???目前只显示字段,用户不知道哪个字段包含什么图像,因此他可以根据自己的意愿进行更改。我尝试了以下操作,图像在每个字段上正确显示,但每个现有字段渲染两次:
<div id="attachments">
<%= f.label :images, required: true %>
<%= f.simple_fields_for :attachments do |attachment| %>
<% if @attachments.present? %>
<% @attachments.each do |attached| %>
<%=image_tag attached.images_url(:thumb).to_s %>
<%= render 'retailer_products/attachment_fields', form: attachment %>
<% end %>
<% end %>
<% end %>
<div class="links" id="add_attachment" style="display: inline; float: right;">
<%= link_to_add_association 'add more images', f, :attachments, form_name: 'form' %>
</div>
</div>
在您的
附件\u字段中,添加这些行以显示图像
<% if form.object.persisted? %>
<%= image_tag form.object.images_url(:thumb).to_s %> ## form.object will return your attachment object, from this you can access your image
<% end %>