heroku控制檯命令添加類別

Question

我將我的rails應用程序部署到Heroku。我正在嘗試使用Heroku控制檯爲我的應用程序添加類別，但我不知道這些命令。

控制器：

class PortfolioController < ApplicationController 
    def index 
    @posts = Post.all.order("created_at DESC") 
    end 

    def about 
    end 

    def portfolio 
    end 

    def contact 
    end 

    def webapp 
    category = Category.find_by_category('webapp') 
    @posts = Post.where(category_id: category.id) 
    end 

    def art 
    category = Category.find_by_category('gameart') 
    @posts = Post.where(category_id: category.id) 
    end 
end 

模式：

ActiveRecord::Schema.define(version: 20160910220215) do 

create_table "admins", force: :cascade do |t| 
t.string "email",     default: "", null: false 
t.string "encrypted_password",  default: "", null: false 
t.string "reset_password_token" 
t.datetime "reset_password_sent_at" 
t.datetime "remember_created_at" 
t.integer "sign_in_count",   default: 0, null: false 
t.datetime "current_sign_in_at" 
t.datetime "last_sign_in_at" 
t.string "current_sign_in_ip" 
t.string "last_sign_in_ip" 
t.datetime "created_at",       null: false 
t.datetime "updated_at",       null: false 
end 

add_index "admins", ["email"], name: "index_admins_on_email", unique: true 
add_index "admins", ["reset_password_token"], name: "index_admins_on_reset_password_token", unique: true 

create_table "categories", force: :cascade do |t| 
t.string "category" 
t.datetime "created_at", null: false 
t.datetime "updated_at", null: false 
end 

create_table "posts", force: :cascade do |t| 
t.string "title" 
t.text  "content" 
t.datetime "created_at",   null: false 
t.datetime "updated_at",   null: false 
t.string "image_file_name" 
t.string "image_content_type" 
t.integer "image_file_size" 
t.datetime "image_updated_at" 
t.integer "category_id" 
end 

end 

Answer 1

到表Categories下創建導軌/ Heroku的控制檯類別，只需運行：

Category.connection 

然後：

Category.create(name: "NAME_OF_CATEGORY") 

然後它會創建一個類別爲這樣：

#<Category id: 1, name: "NAME_OF_CATEGORY", created_at: "2016-09-14 22:25:14", updated_at: "2016-09-14 22:25:14">