Rails ActiveStorage 错误 - MessageVerifier-InvalidSignature [英] Rails ActiveStorage Error - MessageVerifier-InvalidSignature

问题描述

我正在处理一个需要 ActiveStorage has_many_attached :photos 情况在 Location 模型上的项目.

I'm working on a project that requires an ActiveStorage has_many_attached :photos situation on a Location model.

我在下面设置了代码，但是在尝试上传表单时，我收到以下错误:

I have the code set up below, but when attempting to upload a form, I receive the following error:

ActiveSupport::MessageVerifier::InvalidSignature in 
                                 LocationsController#attach_photo

这是将文件添加"到特定父记录(即:Location 记录)的附件集中的方式吗?

Is this the way to "add" a file to the set of attachments for a particular parent record (i.e: a Location record)?

class Location < ApplicationRecord
  ...
  has_many_attached :photos
  ...
end

位置控制器

class LocationsController < ApplicationController
  ...
  def attach_photo
    @location = Location.find(params[:id])
    @location.photos.attach(params[:photo])
    redirect_to location_path(@location)
  end
  ...
end

查看

<%= form_tag attach_photo_location_path(@location) do %>
  <%= label_tag :photo %>
  <%= file_field_tag :photo %>

  <%= submit_tag "Upload" %>
<% end %>

查看

resources :locations do
  member do
    post :attach_photo
  end
end

推荐答案

确保在 form_tag 中添加 multipart: true.它生成 enctype="multipart/form-data".

Make sure to add multipart: true in form_tag. It generates enctype="multipart/form-data".

form_tag 默认不负责，必须有(如果附加文件).

form_tag by default not responsible for it, must have it (if attaching a file).

multipart/form-data 没有编码字符.此值是必需的当您使用具有文件上传控件的表单时

multipart/form-data No characters are encoded. This value is required when you are using forms that have a file upload control

表格:

<%= form_tag attach_photo_location_path(@location), method: :put, multipart: true do %>
  <%= label_tag :photo %>
  <%= file_field_tag :photo %>

  <%= submit_tag "Upload" %>
<% end %>

还有:

将 post 更改为 put 方法，我们正在更新而不是创建 幂等性

Change post to put method, We are updating not creating Idempotency

resources :locations do
  member do
    put :attach_photo
  end
end

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