我一直在寻找答案很久了,但是没有任何帮助。我一直在关注Github页面上关于Carrierwave(https://github.com/carrierwaveuploader/carrierwave/blob/master/README.md#multiple-file-uploads)的教程。就像说明(用餐厅代替用户,用头像代替照片)一样,我有以下内容(我正在使用Rails 5.2.1):
rails g migration add_photos_to_restaurant photos:json
# app/models/restaurant.rb
class Restaurant < ApplicationRecord
belongs_to :user
mount_uploaders :photos, PhotoUploader
end
# app/views/restaurants/_form.html.erb
<div class="container" style="margin-bottom: 200px;">
<div class="row">
<div class="col-xs-6 col-sm-offset-3">
<div class="form-inputs">
<%= simple_form_for(@restaurant) do |f| %>
<% if @restaurant.errors.any? %>
<ul>
<% @restaurant.errors.full_messages.each do |message| %>
<li>
<%= message %>
</li>
<% end %>
</ul>
<% end %>
#[...]
<%= f.file_field :photos, multiple: true %>
</div>
<div class="form-actions">
<%= f.submit class: "btn btn-success" %>
<%= link_to 'Back', restaurants_path, class: "btn btn-primary" %>
</div>
</div>
<% end %>
</div>
</div>
# app/controllers/restaurants_controller.rb
class RestaurantsController < ApplicationController
skip_before_action :authenticate_user!, only: [ :index, :show ]
before_action :set_restaurant, only: [ :show, :edit, :update, :destroy ]
def index
@restaurants = Restaurant.all
end
def show
end
def new
@restaurant = Restaurant.new
end
def create
@restaurant = Restaurant.new(restaurant_params)
@restaurant.user = current_user
if @restaurant.save
redirect_to restaurant_path(@restaurant)
else
render :new
end
end
def edit
end
def update
if @restaurant.update(restaurant_params)
redirect_to restaurant_path(@restaurant)
else
render :edit
end
end
def destroy
@restaurant.destroy
redirect_to restaurants_path
end
private
def set_restaurant
@restaurant = Restaurant.find(params[:id])
end
def restaurant_params
params.require(:restaurant).permit(
#[...],
{photos: []}
)
end
end
执行此操作后得到的是,只有第一张照片保存在restaurant.photo中,但是在Cloudinary上,我收到了所有照片。
另一件事是,我不能与此一起使用可标记标签的gem,因为如果这样做,我会收到此错误:
PG::UndefinedFunction: ERROR: could not identify an equality operator for type json
LINE 1: ..., restaurants.created_at, restaurants.updated_at, restaurant...
这与在餐厅表中将照片作为json列有关。也没有找到解决方法。我希望我可以继续使用Acts作为可标记标签,因为它对于我正在构建的类型网站非常有用。因此,现在我不得不评论与该宝石有关的所有事情。
有人可以帮我摆脱困境吗?非常感谢。