我找到了一些解决方案,但都没有。
upload.rb
:
class Upload < ActiveRecord::Base
belongs_to :issue
# This method associates the attribute ":attachment" with a file attachment
has_attached_file :attachment, styles: {
thumb: '100x100>',
square: '200x200#',
medium: '300x300>'
}
# Validate the attached image is image/jpg, image/png, etc
validates_attachment_content_type :attachment,
:content_type => /\Aimage\/(jpg|jpeg|pjpeg|png|x-png|gif)\z/,
:message => "file type is not allowed (only images)"
end
issue.rb
:
class Issue < ActiveRecord::Base
has_many :uploads
accepts_nested_attributes_for :uploads, allow_destroy: true
end
问题的部分形式:
<%= simple_form_for [@project, @issue], wrapper: :horizontal_form, html: { multipart: true, class: "form-horizontal", remote: true, id: "my-form" } do |f| %>
<% f.input :title %>
<div class="dropzone" id="dropzone-upload">
<div class="fallback">
<%= f.input :attachment, as: :file, multiple: true, name: "upload[attachment]" %>
</div>
</div>
<%= f.button :submit, id:"submit", class: "btn btn-default btn-primary" %>
<% end %>
issue_controller.rb
:
def issue_params
params.require(:issue).permit(
:title,
uploads_attributes: [:id, :attachment, :issue_id]
)
end
更新
确定我的控制台日志:
Started POST "/projects/1/issues" for 127.0.0.1 at 2016-03-03 13:36:19 +0100
Processing by IssuesController#create as HTML
Parameters: {"utf8"=>"✓", "issue"=>{"title"=>"kljjl;kklj", "attachment"=>"upload[attachment]"}
Project Load (0.7ms) SELECT `projects`.* FROM `projects` WHERE `projects`.`id` = 1 LIMIT 1
Unpermitted parameter: attachment
(9.5ms) COMMIT
Redirected to http://localhost:3000/projects/1
Completed 302 Found in 46ms (ActiveRecord: 4.5ms)
upload_controller.rb
:
def upload_params
params.require(:upload).permit(:attachment)
end
这里的想法是: Paperlip有对象:附件。此对象在上载模型和模型与问题模型有关系。问题模型具有上传属性的表单。
更新16:45 03.03.16
我已更新表单以使用正确的嵌套属性但仍有相同的错误
<div class="dropzone" id="dropzone-upload">
<div class="fallback">
<%= f.simple_fields_for :uploads do |u| %>
<%= u.input :attachment, as: :file, multiple: true %>
<% end %>
</div>
</div>
更新16:37
控制台日志:
Started POST "/projects/1/issues" for 127.0.0.1 at 2016-03-03 16:26:03 +0100
Processing by IssuesController#create as HTML
Parameters: {"utf8"=>"✓", "issue"=>{"title"=>"wfwrv"}
答案 0 :(得分:0)
这是因为如果您查看表单,文件输入正在使用&#34;附件&#34;因为它的参数名称为f.input :attachment
。
在issue_params
方法中,您不允许参数attachment
,只允许嵌套参数上传[附件]。
调试此类问题时,您需要查看您的参数是什么。正如您在日志中看到的,它们看起来像这样:
Parameters: {"utf8"=>"✓", "issue"=>{"title"=>"kljjl;kklj", "attachment"=>"upload[attachment]"}
因此,您提交问题[附件]。如果你喜欢它在你的参数中,那么只需删除&#34; uploads_attributes:&#34;从你的params方法。
应该看起来像:
def issue_params
params.require(:issue).permit(
:title,
:id,
:attachment,
:issue_id
)
end
您现在不应再看到警告了。顺便说一句,这只是一个警告。
如果您从不路由到上传,则不需要上传控制器。相反,要访问上传模型,请从问题控制器执行此操作,如下所示:
image = issue_params[:attachment]
。upload = Upload.new(image)
upload.save
如果您需要更多说明,请发表评论。
修改强>
看完你的模特后,不要Upload.new
。相反,在#create方法中,使用新创建的问题创建连接上传:issue.uploads.new(image)
。这一切都取决于你的#create方法是什么样的。我目前假设你在其中发了一个新问题,然后保存了。
我还建议摆脱上传模式。 Paperclip是一个伟大的宝石,可以轻松上传所有麻烦。为什么要创建上传模型,Paperclip会无缝地将附件添加到您的问题模型中?
编辑2:
要制作嵌套表单,请按以下方式编写:
<%= f.fields_for :uploads do |upload| %>
<%= upload.input :attachment %>
<% end %>
并使用它代替您目前拥有的单个输入。那有意义吗?您实际上是在表单中嵌套表单。
答案 1 :(得分:0)
你试试这个吗?
<div class="dropzone" id="dropzone-upload">
<div class="fallback">
<%= f.fields_for Upload.new do |u| %>
<%= u.input :attachment, as: :file, multiple: true %>
<% end %>
</div>