[JAVA] Click the [rails] button to create a random alphanumeric password and enter it in the password field

I want to automatically generate a password

I have set a password function for the portfolio posting function. It would be convenient if there was a function that automatically generated and even entered the password.

So let's make it!

Goal of this article

Click the "Generate Password" button Let's be able to enter it automatically!

Premise

rails:5.2 ruby:2.6.3 bootstrap jquery

Generate password

First, let's make random alphanumeric characters with the controller.

topics_controller.rb

def new
  @topic    = Topic.new
  @password = SecureRandom.alphanumeric(6)
  ->Random alphanumeric characters(A-Z, a-z, 0-9)Generate a
   (6)Is 6 digits, 16 digits if not specified
end

Allows you to fill in fields with the click of a button

Next, change the password you created earlier to password_field (this time it is text_field) Allows you to enter.

ruby:new.html.erb

<div class="topic-new-wrapper" >
  <div class="container">
    <div class="row">
      <div class="col-md-6 col-md-offset-3">
          <%= form_for @topic do |f| %>
            <div class="form-group">
              <%= f.label :password, 'password(Any)' %>
              <%= f.text_field :password, class: 'form-control', id: 'password' %>
              <%= button_tag 'Generate password', id: 'auto-fill-link' %>
            </div>
  
            <%= f.submit 'Password registration', class: 'btn btn-black btn-block' %>
  
          <% end %>
      </div>
    </div>
  </div>
</div>
  
<script>
  $(function(){
    autoFill();
    function autoFill() {
      $('#auto-fill-link').click(function(){
        $('#password').val("<%= @password %>");
      });
    }
  })
</script>

When a link containing the id "auto-fill-link" is clicked, it contains the id "password" @Password is entered in the field.

However, if this is the case, it will be submitted when the button_tag is clicked, so If you want to use it as just a button, add the following code.

type: "button"

ruby:new.html.erb

<div class="topic-new-wrapper" >
  <div class="container">
    <div class="row">
      <div class="col-md-6 col-md-offset-3">
          <%= form_for @topic do |f| %>
            <div class="form-group">
              <%= f.label :password, 'password(Any)' %>
              <%= f.text_field :password, class: 'form-control', id: 'password' %>
This line->       <%= button_tag 'Generate password', id: 'auto-fill-link', type: "button" %>
            </div>
  
            <%= f.submit 'Password registration', class: 'btn btn-black btn-block' %>
  
          <% end %>
      </div>
    </div>
  </div>
</div>
  
<script>
  $(function(){
    autoFill();
    function autoFill() {
      $('#auto-fill-link').click(function(){
        $('#password').val("<%= @password %>");
      });
    }
  })
</script>

Summary

We have created a function that will generate and enter a password.

It's easy, so please use the above code.