附件的pdf预览添加inline请求头

app/controllers/attachments_controller.rb

@@ -15,7 +15,9 @@ class AttachmentsController < ApplicationController
       update_downloads(@file)
       redirect_to @file.cloud_url and return
     end
-    send_file(absolute_path(local_path(@file)), filename: @file.filename, type: @file.content_type.presence || 'application/octet-stream')
+
+    pdf_attachment = params[:disposition] || "attachment"
+    send_file(absolute_path(local_path(@file)), filename: @file.filename,disposition: pdf_attachment, type: @file.content_type.presence || 'application/octet-stream')
 
     update_downloads(@file)
   end

app/helpers/application_helper.rb

@@ -257,8 +257,8 @@ module ApplicationHelper
     end
   end
 
-  def download_url attachment
-    attachment_path(attachment)
+  def download_url attachment,options={}
+    attachment_path(attachment,options)
   end
 
   # 耗时：天、小时、分、秒

app/views/attachment_histories/_attachment_history.json.jbuilder

@@ -8,5 +8,5 @@ json.downloads_count attachment.downloads_count
 json.created_on attachment.created_on
 # json.url attachment_path(attachment, type: 'history').gsub("/api","")
 json.is_pdf attachment.is_history_pdf?
-json.url attachment.is_history_pdf? ? attachment_path(attachment, type: 'history').gsub("/api","") : attachment_path(attachment, type: 'history')
+json.url attachment.is_history_pdf? ? attachment_path(attachment, type: 'history',disposition:"inline") : attachment_path(attachment, type: 'history')
 json.attachment_id attachment.attachment_id

app/views/attachments/_attachment.json.jbuilder

@@ -12,6 +12,6 @@ json.description attachment.description
 json.downloads_count attachment.downloads_count
 json.created_on attachment.created_on
 json.is_pdf attachment.is_pdf?
-json.url attachment.is_pdf? ? download_url(attachment).gsub("/api","") : download_url(attachment)
+json.url attachment.is_pdf? ? download_url(attachment,disposition:"inline") : download_url(attachment)
 
 # json.url download_url(attachment) unless attachment.locked?(@is_member)

app/views/attachments/_attachment_simple.json.jbuilder

@@ -3,6 +3,6 @@ json.title attachment.title
 json.filesize  number_to_human_size attachment.filesize
 json.description attachment.description
 json.is_pdf attachment.is_pdf?
-json.url attachment.is_pdf? ? download_url(attachment).gsub("/api","") : download_url(attachment)
+json.url attachment.is_pdf? ? download_url(attachment,disposition:"inline") : download_url(attachment)
 # json.url download_url(attachment)
 json.set! :delete, delete.nil? ? true : delete if defined? delete

app/views/attachments/_attachment_small.json.jbuilder

@@ -2,5 +2,5 @@ json.id attachment.id
 json.title attachment.title
 json.filesize number_to_human_size(attachment.filesize)
 json.is_pdf attachment.is_pdf?
-json.url attachment.is_pdf? ? download_url(attachment).gsub("/api","") : download_url(attachment)
+json.url attachment.is_pdf? ? download_url(attachment,disposition:"inline") : download_url(attachment)
 json.created_on attachment.created_on