Question

我尝试上传照片似乎没有工作。 FOR MANY PHOTOS

在视图＆gt; building＆gt; _form

中

<%= form_for(@building, :html=>{:multipart => true}) do |f| %>
  <% if @building.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@building.errors.count, "error") %> prohibited this building from being saved:</h2>

      <ul>
      <% @building.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :title %><br />
    <%= f.text_field :title %>
  </div>
  <div class="field">
    <%= f.label :status %><br />
    <%= f.select :status, Building::STATUS, :prompt=>'Select status of the building' %>
  </div>
  <div class="field">
    <%= f.label :description %><br />
    <%= f.text_area :description, :rows => 10 %>
  </div>
  <div class="field">
    <%= f.label :location %><br />
    <%= f.text_field :location %>
  </div>
  <div class="field">
    <%= f.label :price %><br />
    <%= f.text_field :price %>
  </div>
  <div class="field">
    <h3>Tasks</h3>
  <% f.fields_for :tasks do |task_form| -%>
    <%= render :partial => 'task', :locals => { :form => task_form } %>
  <% end -%>


  <%= add_photo(f) %>

   <%= f.file_field :foto%>

      </div>

      <div class="actions">
        <%= f.submit %>
      </div>
    <% end %>

在视图中＆gt;构建＆gt; _task

    <div class="task">
      <p>
        <%= form.label :name %>
        <%= form.text_field :name, :size => 15 %>
        <%= remove_task_link( form ) %>
      </p>
    </div>

in helpers>building_helpers

module BuildingsHelper

def add_photo(form_builder)
  link_to_function "add", :id  => "add_photo" do |page|
  form_builder.fields_for :tasks, Task.new, :child_index => 'NEW_RECORD' do |f|
        html = render(:partial => 'task', :locals => { :form => f })
        page << "$('tasks').insert({ bottom: '#{escape_javascript(html)}'.replace(/NEW_RECORD/g, new Date().getTime()) });"
       end
  end
end

   def remove_task_link(form_builder)
    if form_builder.object.new_record?
      # If the task is a new record, we can just remove the div from the dom
      link_to_function("remove", "$(this).up('.task').remove();");
    else
      # However if it's a "real" record it has to be deleted from the database,
      # for this reason the new fields_for, accept_nested_attributes helpers give us _delete,
      # a virtual attribute that tells rails to delete the child record.
      form_builder.hidden_field(:_delete) +
      link_to_function("remove", "$(this).up('.task').hide(); $(this).previous().value = '1'")
    end
  end
end

在控制器＆gt;建筑物

中

 def new
    @building = Building.new
    2.times { @building.tasks.build }
    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @building }
    end
  end

  # GET /buildings/1/edit
  def edit
    @building = Building.find(params[:id])
    2.times { @building.tasks.build }
  end

在视图＆gt;布局＆gt;应用

中

<!DOCTYPE html>
<html>
<head>
  <title>Welcome to koshbay</title>
  <%= stylesheet_link_tag :all %>
  <%= stylesheet_link_tag    "application", :media => "all" %>
  <%= javascript_include_tag "application" %>

  <%= csrf_meta_tags %>
</head>

模型＆GT;任务

class Task < ActiveRecord::Base
  attr_accessible :building_id, :name 
  belongs_to :project
has_attached_file :foto, :styles => { :medium => "300x300>",
                      :thumb => "100x100>" , 
                     :default_url => "/images/:style/missing.png"}

end

模型＆GT;建立

class Building < ActiveRecord::Base
  attr_accessible :description, :price, :status, :title ,:location, `:foto`

  has_many :tasks, :dependent => :destroy
  # This is new!
  accepts_nested_attributes_for :tasks, :allow_destroy => true
 end

更新1个数据库表

分贝＆GT; create_task

class CreateTasks < ActiveRecord::Migration
  def change
    create_table :tasks do |t|
      t.string :name
      t.integer :building_id

      t.timestamps
    end
  end
end

分贝＆GT; create_buildings

class CreateBuildings < ActiveRecord::Migration
  def change
    create_table :buildings do |t|
      t.string :title
      t.string :location     
      t.string :status
      t.text :description
      t.decimal :price, :precision=>8, :scale => 2

      t.timestamps
    end
  end
end

更新2

问题出在_task.html.erb

更新3

我已经运行了rails g paperclip building foto

现在在db我有

class AddAttachmentFotoToBuildings < ActiveRecord::Migration
  def self.up
    change_table :buildings do |t|
      t.has_attached_file :foto
    end
  end

  def self.down
    drop_attached_file :buildings, :foto
  end
end

我正在使用这个例子＆＃39; http://railsforum.com/viewtopic.php?id=28447＆＃39;

我没有得到任何错误，我无法看到任何我可以把照片上传它。当我按下添加按钮没有做任何事情。

任何想法有什么不对？

Answer 1

你可以在这里看到你的项目：

<强> https://github.com/DamirSvrtan/For-mario

你可以从那里克隆它。无论如何，给你详细信息：

1.您未将此行添加到config/environments/development.rb:

Paperclip.options[:command_path] = "/usr/local/bin/"

你可以看到我把那条线放在那里，它实际上是"/usr/bin"

运行哪个转换命令，获得的内容，然后从中删除最后一个'/convert'并将其放在development.rb文件中。

2.您的建筑模型中有foto属性，但您的任务模型中有has_attached。我也修好了。我还改变了你的视图并删除了嵌套属性来处理照片，而我已经制作了建筑形式来处理它。我不小心擦除了表单中的嵌套属性部分，所以只需将其取回，我认为有两行。

3.由于某种原因，您的代码不能与has_attachment的“styles”部分一起使用。我真的不知道为什么会这样，因为我的所有人到目前为止都完美地工作了。我试图解决它，但我找不到解决方案。其他一些人在stackoverflow上也有同样的问题，也许它是一些ruby-rails版本的东西。我没有其他任何想法。如果你没有找到解决方案，你仍然可以“呼吸”它，但是，也许再问一下这里为什么会这样。

4.我将回形针宝石改为：

gem "paperclip", "~> 3.0"

5.希望你能理解我所做的所有改变。您可以接受代码，也可以不接受。

Answer 2

好的，这就是我使用嵌套属性所做的工作。要做到这一点，你需要2插入1）paperclip 2）imagemagick

宝石文件中的

添加行

gem'paperclip'

然后在cmd：bundle install

中运行

然后运行gem install rmagick //＆lt; -------我会工作的。我忘了

一步步骤

** p.s：建筑是关系一（建筑物）到（很多）照片**

步骤1：我用commant创建一个表：rails g model buildingphoto building_id：integer

分贝

class CreateBuildingPhotos < ActiveRecord::Migration
  def change
    create_table :building_photos do |t|
      t.integer :building_id


      t.timestamps
    end
  end
end

第2步：commant＆gt; rails g paperclip buildingphoto photo

分贝

class AddAttachmentPhotoToBuildingPhotos < ActiveRecord::Migration
  def self.up
    change_table :building_photos do |t|
      t.has_attached_file :photo
    end
  end

  def self.down
    drop_attached_file :building_photos, :photo
  end
end

完成第2步后：rake db：migrate

in model＆gt; buildingphoto

class BuildingPhoto < ActiveRecord::Base
  attr_accessible :building_id , :photo
  belongs_to :building

    has_many :photo

    has_attached_file :photo

end

在模型＆gt;建筑

中

class Building < ActiveRecord::Base
  attr_accessible :building_photos_attributes

  has_many :building_photos, :dependent => :destroy
  accepts_nested_attributes_for :building_photos
end

控制器＆gt; buildingcontroller中的

def new
    @building = Building.new

    4.times { @building.building_photos.build }
    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @building }
    end
  end

在视图中＆gt;构建＆gt; _buildingphoto.html.erb //我创建它

 <%= f.label :photo %><br />
    <%= f.file_field :photo %>

在视图中＆gt;构建＆gt; _form.html.erb //我添加此行

<div class="field">
   <%= f.fields_for :building_photos do |builder| %>
    <%= render "buildingphoto", :f => builder %>
  <% end %>
  </div>

在config＆gt;环境中＆gt; development.rb //告诉Paperclip在哪里找到您的ImageMagick安装（并非总是需要）

Paperclip.options[:command_path] = "/usr/bin/"

查看您上传的照片

<% building.building_photos.each do |photo| %>
        <%= link_to (image_tag (photo.photo.url)), building %>
        <% end %>

嵌套属性使用回形针在ror上传多张照片

2 个答案: