存储多个图像 - 嵌套属性 - 导轨5

Question

有另一种方式使用的，而不是这一个，我使用的，因为它看起来丑陋

this is how the form looks like

这是代码

纸夹来存储多个图像

应用程序/视图/职位/ _form.html.erb

<%= simple_form_for @post, html: { class: 'form-horizontal', multipart: true } do |f| %> 
    <%= f.input :title %> 
    <%= f.input :description %> 

     <%= f.simple_fields_for :pictures do |builder| %> 
    <% if builder.object.new_record? %> 

     <%= builder.input :image, :input_html => { :multiple => true } %> 
    <% end %> 
     <% end %> 

    <%= f.input :price %> 
    <%= f.input :city %> 
    <%= f.input :phone %> 

    <%= f.button :submit %> 
<% end %> 

，这是在posts_controller新创建行动

应用程序/控制器/ posts_controller.rb

def new 
    @post = current_user.posts.build 
    @post.pictures.build 
    end 

    def create 
    @post = current_user.posts.build(post_params) 

    if @post.save 
     params[:image].each do |picture|  

     @post.images.create(:image=> picture) 

     end 
     redirect_to root_path 
    else 
     redirect_to new_post_path 
    end  
    end 
    private 

    def post_params 
     params.require(:post).permit(:title, :price, :description, :phone, :image, :city, pictures_attributes: [:image]) 
    end 

现在有一个错误不允许的参数：图像

Started POST "/posts" for 127.0.0.1 at 2016-08-18 07:04:27 +0100 
Processing by PostsController#create as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"1M2k+ZnouBRdtP6/EDHtLtewiwiS32uSLcZldPNghFt/8n81txtUAAdbKzlCpn6x5l4RJNZYYqV7OVTs6pyvBQ==", "post"=>{"title"=>"setst", "description"=>"setset", "pictures_attributes"=>{"0"=>{"image"=>[#<ActionDispatch::Http::UploadedFile:0xa337e44 @tempfile=#<Tempfile:/tmp/RackMultipart20160818-20404-fu0x0v.jpg>, @original_filename="column-01.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"post[pictures_attributes][0][image][]\"; filename=\"column-01.jpg\"\r\nContent-Type: image/jpeg\r\n">, #<ActionDispatch::Http::UploadedFile:0xa337e30 @tempfile=#<Tempfile:/tmp/RackMultipart20160818-20404-1sidf3n.png>, @original_filename="fiy_away.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"post[pictures_attributes][0][image][]\"; filename=\"fiy_away.png\"\r\nContent-Type: image/png\r\n">]}}, "price"=>"3", "city"=>"setset", "phone"=>""}, "commit"=>"Create Post"} 
    User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? ORDER BY "users"."id" ASC LIMIT ? [["id", 2], ["LIMIT", 1]] 
Unpermitted parameter: image 
    (0.2ms) begin transaction 
    (0.1ms) rollback transaction 
Redirected to http://localhost:3000/posts/new 
Completed 302 Found in 26ms (ActiveRecord: 0.8ms) 

我只希望在使用文件字段添加所有的图像，并将它们存储为一个数组是可能的！

这是回购https://github.com/vogdev/colne2

Answer 1

，我发现这个问题，我所做的是我删除了simple_form和使用的普通的form_for

<%= form_for @post, html: { class: 'form-horizontal', multipart: true } do |f| %> 

<%= f.label :title %> 
<%= f.text_field :title %> 

<%= f.label :description %> 
<%= f.text_field :description %> 

     <%= f.fields_for :pictures do |builder| %> 

    <%= f.label :pictures, :class => 'control-label' %> 

    <%= file_field_tag "images[]", type: :file, multiple: true %> 

     <% end %> 
<%= f.label :price %> 
<%= f.text_field :price %> 

    <%= f.label :city %> 
<%= f.text_field :city %> 

    <%= f.label :phone %> 
<%= f.text_field :phone %> 


    <%= f.submit nil, :class => 'btn btn-primary' %> 
<% end %> 

并在创建操作的解决方案posts_controller

def create 

    @post = current_user.posts.build(post_params) 


    if @post.save 
     if params[:images] 
     #===== The magic is here ;) 
     params[:images].each { |image| 
      @post.pictures.create(image: image) 
     } 
     end 
     redirect_to root_path 
    else 
     redirect_to new_post_path 
    end  
    end 

Answer 2

我有一个sim在嵌套资源Rails 5的Ilar问题上，我发现解决方案只添加了倍数：真对file_field。

我有两个模型军医和病人。患者是从梅迪奇嵌套的资源，我使用的设计，这样我就可以访问@patient = current_medic.patient

在视图：

<%= form_for @patient, url: patients_path, html: { multipart: true } do |f| %> 
    <%= f.file_field :image, multiple: true %> 
<% end %> 

编辑 - 创建方法：

def create 
    @patient = current_medic.patients.new(patient_params) 

    respond_to do |format| 
    if @patient.save 
     format.html { redirect_to @patient, :flash => { :success => 'Patient was successfully created.' } } 
    else 
     format.html { render :new } 
    end 
    end 
end 

希望这帮帮我！