Question

我有一个product.rb

class Product < ApplicationRecord
  belongs_to :category
  has_many :comments,dependent: :destroy 
  has_many :photos,inverse_of: :product
  accepts_nested_attributes_for :photos ,reject_if: :all_blank, allow_destroy: true
end

product_controller.rb

 def new 
        @product=Product.new
        @product.photos.new
 end

def product_params 
        params.require(:product).permit(:name,:price,:decription,:category_id,photos_attributes: [:avatar])
    end

product / new.html.erb

<%= simple_form_for @product do |f| %>
  <%= f.input :name %>
  <%= f.input :price %>
  <%= f.input :decription, as: :text%>
  <%= f.select :category_id , @categorys.collect{|c|[c.name,c.id]},include_blank:false %></br>
  <h2> photo</h2>
  <%= f.simple_fields_for :photos do |photo|%>
    <%= render 'photo_fields', f:photo %>
    <%=link_to_add_association 'add photo', f, :photos%> 
 <%end%>
  <%=f.submit%>
<% end %>
<%= link_to 'Back', products_path %>

_photo_fields.html.erb

<%= f.input :avatar , as: :file%> 
  <%= link_to_remove_association "remove photo", f %>

，我上传了多张用于产品的照片。但是当我显示产品的所有照片时，产品仅保存了一张照片图片

<strong>image</strong>
  <% @product.photos.each do |p| %>
  <%= image_tag p.avatar.url(:medium) %>
  <% end %>%>

我希望产品有很多照片（关联1 -n）。对不起，我英语不好。请帮助我！

上传多照片使用宝石茧

0 个答案: