Initialize all values of [Rails] form with one click (helper method definition + JavaScript)

Postscript (2020/06/10)

With the method in this article, the only action you can achieve is form initialization (reset). How to make it completely clear (blank) is introduced in this article.

Notes created in advanced search form with [Rails] ransack


While implementing a search form that allows you to add various search conditions, I wondered if there was a way to reset the search conditions with a single click.

As a result, I was able to implement it by the following method, so I will summarize it.



To give a brief overview ** 1. Define a method to generate a reset button tag in the helper method ** ** 2. Call it in view ** ** 3. Write a process to clear the checkbox with js ** I feel like I will send it with three

1. Definition of helper method

Any file will do, but this time we will define it in helpers / application.rb.


module ApplicationHelper
  def reset_tag(value = "Reset form", options = {})
    options = options.stringify_keys
    tag :input, { type: "reset", value: value }.update(options)

2. Call in view file


  = reset_tag 'clear', id: 'js_clear_btn'
  = f.submit 'Done'

Originally Rails does not have reset_tag, but since it is defined by a helper method, it can be called in this way.

Adjust with CSS and look like this ↓ スクリーンショット 2020-06-03 13.53.06.png

3. A description that clears the check box with JavaScript

In my case, I couldn't clear (uncheck) the checkbox with the reset button, so I wrote JavaScript there.

The code is highly environment dependent, so I'll omit it.


f923d6ccbb11ae2bb0c6d320371bc226.gif Like this, I was able to create a button that initializes all text_field, number_field, select, and checkbox!


Use the button to initialize the form in Rails

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