personal-journal1/app/views/admin/journal_papers/index.html.erb

<script src="https://kit.fontawesome.com/1fa49cfdc9.js" crossorigin="anonymous"></script>
<table class="table main-list">
	<thead>
		<tr>
			<th class="span1"><%= t('personal_journal.year') %></th>
			<th class="span7"><%= t('module_name.journal_paper') %></th>
			<th class="span1"><%= t("personal_plugins.author") %></th>
		</tr>
	</thead>
	<tbody id="tbody_writing_journals" class="sort-holder">
		<%= render 'writing_journal' %>
	</tbody>
</table>

<div class="bottomnav clearfix">
	<div class="action pull-right">
		<div class="dropup upload-button">
		    <button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">
    			<i class="far fa-object-group"></i>
    			<span class="group"></span>合併
    		</button>
    		<button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">
    			<i class="icon-upload-alt icon-white"></i>上傳
    			<span class="caret"></span>
    		</button>
	    	<div class="dropdown-menu upload-box">
	    		<form action="/admin/journal_papers/import_from_excel" method="post" enctype="multipart/form-data">
	    			<%= hidden_field_tag :authenticity_token, form_authenticity_token %>
	    			<input type="file" name="import_file" >
	      			<button class="btn btn-primary" type="submit"><%= t(:submit) %></button>
	      			<a class="" href="/admin/journal_papers/download_excel_format.xlsx">Download excel format</a>
	    		</form>
	    	</div>
  		</div>
		<%= link_to content_tag(:i, nil, :class => 'icon-plus icon-white') + t(:new_), new_admin_journal_paper_path, :class => 'btn btn-primary' %>
		<%= link_to content_tag(:i, nil, :class => 'icon-cog icon-white') + t('setting'), admin_writing_journal_setting_path, :class => 'btn btn-primary pull-right' %>
	</div>
	<div class="pagination pagination-centered">
		<%= content_tag :div, paginate(@writing_journals), class: "pagination pagination-centered" %>
	</div>
</div>
<% if params[:error] == "1" %>
	<script type="text/javascript">
		alert("File cannot be imported. File has more than 500 entries. Please seperate the entries in different files.");
		window.location.href = "<%= admin_journal_papers_url %>"
	</script>
<% end %>