Implementing Bootstrap JavaScript functionality within a Rails 7 application

Question

Implementing Bootstrap JavaScript functionality within a Rails 7 application

My current Rails 7 application utilizes esbuild as the JS bundler and has bootstrap imported. I am facing an issue where I am unable to access any Bootstrap Javascript functionality outside of the main application.js file. For example, I am attempting to programmatically display a Bootstrap modal on a specific page using the following code:

var myModal = new bootstrap.Modal(document.getElementById('helpModal'), {});
myModal.modal('show');

However, I am encountering an error as 'bootstrap' is not recognized:

Uncaught ReferenceError: bootstrap is not defined

Even though the page includes application.js:

<%= javascript_include_tag "application", defer: true %>

Do you have any suggestions on how to access 'bootstrap' in JS outside of the application.js file itself?

Thank you!

javascript bootstrap-5 esbuild ruby-on-rails-7

Answer 1

Answer №1

If you started your rails app with the command:

rails new APP_NAME --css=bootstrap ...

It sets up your app with ESBUILD and provides a app/javascripts/application.js file that looks like this:

// Entry point for the build script in your package.json
import "@hotwired/turbo-rails"
import "./controllers"
import * as bootstrap from "bootstrap"

Now, you will need to implement the modal functionality using the imported bootstrap.

Insert the following code after the bootstrap import line in your application.js file:

// Modals
var myModal = new bootstrap.Modal(document.getElementById('helpModal'), {});
myModal.modal('show');

// Or to have it triggered using a button
document.getElementById('helpModalButton').addEventListener('click', event => {
  myModal.show();
});

By doing this, you will activate the event handlers

For more detailed instructions, refer to the Bootstrap Docs page for Components such as Modals and Popovers.

https://getbootstrap.com/docs/5.1/components/modal/#passing-options

Answer 2

If you started your rails app with the command:

rails new APP_NAME --css=bootstrap ...

It sets up your app with ESBUILD and provides a app/javascripts/application.js file that looks like this:

// Entry point for the build script in your package.json
import "@hotwired/turbo-rails"
import "./controllers"
import * as bootstrap from "bootstrap"

Now, you will need to implement the modal functionality using the imported bootstrap.

Insert the following code after the bootstrap import line in your application.js file:

// Modals
var myModal = new bootstrap.Modal(document.getElementById('helpModal'), {});
myModal.modal('show');

// Or to have it triggered using a button
document.getElementById('helpModalButton').addEventListener('click', event => {
  myModal.show();
});

By doing this, you will activate the event handlers

For more detailed instructions, refer to the Bootstrap Docs page for Components such as Modals and Popovers.

https://getbootstrap.com/docs/5.1/components/modal/#passing-options

Answer 3

Answer №2

By declaring Bootstrap on the window object in application.js, I was able to get this working smoothly.

// app/javascript/application.js
import * as bootstrap from "bootstrap"
window.bootstrap = bootstrap;

// In the view
:javascript
  new window.bootstrap.Modal('#helpModal').show();

To easily close the modal when clicking on "Close" or "Submit," the following code proved effective:

<button type="button" class="btn btn-secondary" 'data-bs-dismiss'="modal">Close</button>

<%= form.submit "Submit", class: "btn btn-primary", 'data-bs-dismiss': "modal" %>

Simply adding the attribute "data-bs-dismiss" to the submit button will automatically close the modal upon submission.

Answer 4

By declaring Bootstrap on the window object in application.js, I was able to get this working smoothly.

// app/javascript/application.js
import * as bootstrap from "bootstrap"
window.bootstrap = bootstrap;

// In the view
:javascript
  new window.bootstrap.Modal('#helpModal').show();

To easily close the modal when clicking on "Close" or "Submit," the following code proved effective:

<button type="button" class="btn btn-secondary" 'data-bs-dismiss'="modal">Close</button>

<%= form.submit "Submit", class: "btn btn-primary", 'data-bs-dismiss': "modal" %>

Simply adding the attribute "data-bs-dismiss" to the submit button will automatically close the modal upon submission.

Answer 5

Answer №3

If you encounter an error in an imported library and are unsure how to resolve it, one approach is to reference Bootstrap from a JS file within your app. In my case, I dealt with this issue by duplicating the

import * as bootstrap from "bootstrap"

command in my Javascript file...

//app/javascript/popovers.js

console.log('Loading popovers...')

import * as bootstrap from "bootstrap"

const popoverTriggerList = document.querySelectorAll('[data-bs-toggle="popover"]')
const popoverList = [...popoverTriggerList].map(popoverTriggerEl => new bootstrap.Popover(popoverTriggerEl))

Subsequently, I imported that file from my main application.js:

//app/javascript/application.js

// Entry point for the build script in your package.json
import "@hotwired/turbo-rails"
import "./controllers"
import * as bootstrap from "bootstrap"
import "./popovers.js"

In my scenario, I was attempting to reference bootstrap in order to initialize Popovers.

Answer 6

If you encounter an error in an imported library and are unsure how to resolve it, one approach is to reference Bootstrap from a JS file within your app. In my case, I dealt with this issue by duplicating the

import * as bootstrap from "bootstrap"

command in my Javascript file...

//app/javascript/popovers.js

console.log('Loading popovers...')

import * as bootstrap from "bootstrap"

const popoverTriggerList = document.querySelectorAll('[data-bs-toggle="popover"]')
const popoverList = [...popoverTriggerList].map(popoverTriggerEl => new bootstrap.Popover(popoverTriggerEl))

Subsequently, I imported that file from my main application.js:

//app/javascript/application.js

// Entry point for the build script in your package.json
import "@hotwired/turbo-rails"
import "./controllers"
import * as bootstrap from "bootstrap"
import "./popovers.js"

In my scenario, I was attempting to reference bootstrap in order to initialize Popovers.

Answer 7

Answer №4

After making a crucial decision, I deleted Gemfile.lock from my project and proceeded to update the gems using the command gem update --system. To ensure everything runs smoothly, don't forget to install the gems using bundler with the command bundle install. Best of luck with your project!

Answer 8

After making a crucial decision, I deleted Gemfile.lock from my project and proceeded to update the gems using the command gem update --system. To ensure everything runs smoothly, don't forget to install the gems using bundler with the command bundle install. Best of luck with your project!

Implementing Bootstrap JavaScript functionality within a Rails 7 application

Answer №1

Answer №2

Answer №3

Answer №4

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