Rails form select boolean

Introduction

In web development using the Ruby on Rails framework, forms are an essential part of the user experience. One type of form element that is commonly used is a boolean select, which allows the user to select between two options typically represented by the text 'true' and 'false' or 'yes' and 'no'. This guide will provide information on how to use the Rails form select boolean helper to create boolean selects in your Rails application.

The Rails form select boolean helper

The Rails form select boolean helper is a form helper that creates a boolean select form element for a model attribute. To use the helper, you need to specify the model attribute and the options for the select box.

The syntax for the Rails form select boolean helper is as follows:

<%= f.select :attribute_name, [['True', true], ['False', false]], { include_blank: true } %>

In this example, :attribute_name is the name of the model attribute that the boolean select is being created for. The second argument is an array of arrays, where each inner array contains the text that will be displayed in the select box and its corresponding boolean value. The third argument is an options hash, which includes an include_blank key that specifies whether an additional blank option should be included in the select box.

For example, if you have a model called User with a boolean attribute admin, you could create a boolean select for the admin attribute using the following code:

<%= form_for @user do |f| %>
  <%= f.select :admin, [['Yes', true], ['No', false]], { include_blank: true } %>
  <%= f.submit %>
<% end %>

Conclusion

In conclusion, the Rails form select boolean helper is a useful tool for creating boolean select form elements in your Rails application. By using this helper, you can provide an intuitive interface for your users to select between true and false values, or any other two values that you choose.