diff --git a/app/controllers/apply_signatures_controller.rb b/app/controllers/apply_signatures_controller.rb
index 54f64aa6..19907b11 100644
--- a/app/controllers/apply_signatures_controller.rb
+++ b/app/controllers/apply_signatures_controller.rb
@@ -11,9 +11,12 @@ class ApplySignaturesController < ApplicationController
   def create 
     ActiveRecord::Base.transaction do
       begin
-        @signature = current_user.apply_signatures.create!(project_id: params[:project_id])
+        @signature = current_user.apply_signatures.find_or_create_by!(project_id: params[:project_id])
+        @signature.status = 0
+        @signature.attachments = Attachment.none
         @attachment = Attachment.find_by_id(params[:attachment_id])
         @attachment.container = @signature
+        @signature.save!
         @attachment.save!
       rescue Exception => e
         tip_exception("#{e}")
diff --git a/app/models/apply_signature.rb b/app/models/apply_signature.rb
index f6f7bfc3..d14283f7 100644
--- a/app/models/apply_signature.rb
+++ b/app/models/apply_signature.rb
@@ -23,5 +23,7 @@ class ApplySignature < ApplicationRecord
 
     scope :with_user_id, -> (user_id) {where(user_id: user_id)}
 
+    validates :project_id, uniqueness: {scope: :user_id}
+
     enum status: {unpassed: -1, waiting: 0, passed: 1}
 end
diff --git a/app/views/admins/apply_signatures/shared/_list.html.erb b/app/views/admins/apply_signatures/shared/_list.html.erb
index ec028b30..36984aa9 100644
--- a/app/views/admins/apply_signatures/shared/_list.html.erb
+++ b/app/views/admins/apply_signatures/shared/_list.html.erb
@@ -22,7 +22,7 @@
       <td>
         <% if signature.attachments.present? %>
           <% signature.attachments.each do |attachment|%>
-            <%= image_tag("/api/attachments/#{attachment.id}", width: 40, height: 40, class: 'preview-image auth-image', data: { toggle: 'tooltip', title: '点击预览' }) %>
+            <%= link_to "#{attachment.try(:filename)}",attachment_path(attachment), target: "_blank"  %>
           <% end %>
         <% end %>
         
diff --git a/public/react/build b/public/react/build
new file mode 160000
index 00000000..6348a15c
--- /dev/null
+++ b/public/react/build
@@ -0,0 +1 @@
+Subproject commit 6348a15cdb954862dc1b7b5f045a432bcfde7dc4