How to develop a simple questionnaire system using MySQL and Ruby on Rails

How to use MySQL and Ruby on Rails to develop a simple questionnaire system

Introduction:
In today's information age, questionnaires are commonly used as a Data collection methods are widely used in various research and survey activities. In order to conduct questionnaire surveys conveniently and efficiently, this article will introduce how to use MySQL and Ruby on Rails to develop a simple questionnaire survey system. Through this system, users can create and manage questionnaires, as well as collect and analyze user response data.

1. System requirements and functional design:

1. User management functions:
   a. User registration and login functions
   b. User role classification: ordinary users and management Member user
   c. User password encryption and verification function
2. Questionnaire management function:
   a. Create questionnaire
   b. Edit questionnaire
   c. Delete questionnaire
   d. View Questionnaire list
   e. Publish/close questionnaire
3. Question management function:
   a. Create question
   b. Edit question
   c. Delete question
   d. Combine question with Questionnaire association
4. Answer sheet management function:
   a. User fills in the questionnaire
   b. Save answer sheet data
   c. Export answer sheet data
5. Data analysis function:
   a . Statistical questionnaire answer data
   b. Generate charts and report displays

2. System architecture design:

1. Database design:
   The system uses MySQL database for data storage. Design the database table structure as follows:

   • User table: id, username, email, password, role
   • Questionnaire table: id, title, description, status, user_id
   • Question form: id, content, question_type, questionnaire_id
   • Answer form: id, user_id, questionnaire_id, question_id, answer

2. Model design:
   Design the corresponding model class according to the database table structure, and use the ORM function of Rails for data manipulation and association.

   • User model: User
   • Questionnaire model: Questionnaire
   • Question model: Question
   • Answer model: Answer

3. Controller design:
   Design the corresponding controller class to handle user requests and return corresponding views.

   • User Controller: UsersController
   • Questionnaires Controller: QuestionnairesController
   • Question Controller: QuestionsController
   • Answer Controller: AnswersController
4. View design:
   Use Rails view templates to design the user interface, including user registration, login, questionnaire list, question list, answer sheet entry and other pages.

3. System implementation steps:

1. Install and configure the MySQL database:
   Configure the database.yml file in the Rails project and specify the connection information of the MySQL database.
2. Create a Rails application:
   Use the command line to create a new Rails application and configure related dependencies and gems.
3. Design the database table structure:
   Use the Rails generator command to create the database migration file and write the corresponding database table structure design.
4. Generate models and controllers:
   Use the Rails generator command to create model and controller class files and write corresponding code logic.
5. Design view template:
   Use Rails’ view template to design the user interface and write the corresponding style and page interaction logic.
6. Testing and debugging:
   Use the Rails testing framework for unit testing and integration testing to ensure the stability and correctness of the system.
7. Deployment and release system:
   Deploy the application to the server and configure relevant environment variables and security settings.

4. Code example:

The following is a simple example code to implement user registration and login functions:

1. User model (user.rb ):

class User < ApplicationRecord
  # 密码加密
  has_secure_password

  # 用户名和邮箱唯一性验证
  validates :username, :email, presence: true, uniqueness: true
end

2. User Controller (users_controller.rb):

class UsersController < ApplicationController
  def new
    @user = User.new
  end

  def create
    @user = User.new(user_params)
    if @user.save
      redirect_to login_path, notice: '用户注册成功！'
    else
      render :new
    end
  end

  private
  
  def user_params
    params.require(:user).permit(:username, :email, :password, :password_confirmation)
  end
end

3. User registration page (new.html.erb):

<h2>用户注册</h2>

<%= form_for @user do |f| %>
  <%= f.label :username %>
  <%= f.text_field :username %>

  <%= f.label :email %>
  <%= f.email_field :email %>

  <%= f.label :password %>
  <%= f.password_field :password %>

  <%= f.label :password_confirmation %>
  <%= f.password_field :password_confirmation %>

  <%= f.submit '注册' %>
<% end %>

4. User login page (login.html.erb):

<h2>用户登录</h2>

<%= form_tag login_path do %>
  <%= label_tag :email %>
  <%= text_field_tag :email, params[:email] %>

  <%= label_tag :password %>
  <%= password_field_tag :password %>

  <%= submit_tag '登录' %>
<% end %>

Summary:
Develop a simple questionnaire system using MySQL and Ruby on Rails , can help us collect and analyze user answer data. Through the design of system requirements and functions, as well as the implementation of system architecture and code, a questionnaire survey system with complete functions and easy to use can be built. I hope this article will help you understand and learn how to use MySQL and Ruby on Rails to develop a questionnaire system.

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