The majority of components come from our open-source package "Petal Components". However, there are some only in Petal Pro. These have been put into a new private package called "Petal Framework". We are slowly adding the Petal Framework component docs to the petal.build website. Ultimately, petal.build will house all docs related to components, and these guides will more tailored to Petal Pro core functionality.


Docs are on petal.build.


See the Branding section.

Color scheme switch

<.color_scheme_switch />

The switch to switch between light and dark mode.

Note that for this to work you also need to add this to your <head> . This is installed by default in Petal Pro.

# in your <head>:
<.color_scheme_switch_js />

Email helpers

A set of components for email templates. Kind of like Petal Components, but for emails.

Example usage:

<h1>Let's verify your account</h1>

<p>Touch the button below to verify your account</p>

<EmailComponents.button_centered to={@url}>
  Verify account

  If you didn't create an account with us, please ignore this.

To see them all run this from within your directory:

code deps/petal_framework/lib/petal_framework/web/components/email_components.ex

If you want to add your own components, you can create a new file:

touch /lib/petal_pro_web/components/email_components.ex

Then add your components:

defmodule PetalPro.Components.EmailComponents do
  use Phoenix.Component
  def my_new_component(assigns) do
    Your component HTML goes here

Then in lib/petal_pro_web/views/email_view.ex you can either alias it or import it. Since it has the same name as the PetalFramework module, you can't alias it unless you change the name away from EmailComponents.

Importing makes it more easily callable, but it can be confusing if you don't know where the function came from. We'll leave that decision up to you.

defmodule PetalProWeb.EmailView do
  use PetalProWeb, :view
  alias PetalFramework.Components.EmailComponents
  # Import your components:
  import PetalPro.Components.EmailComponents

Now it'll be available in your email templates!

<h1>Let's verify your account</h1>

<.my_new_component />

Landing page

A set of landing page related components. For example:

  description={gettext("Here are some features you can use to get started with your web app.")}
        title: "Authentication",
        description: Faker.Lorem.sentence(10..20),
        icon: :lightning_bolt
        title: "HTML Emails",
        description: Faker.Lorem.sentence(10..20),
        icon: :puzzle
        title: "Wallaby testing",
        description: Faker.Lorem.sentence(10..20),
        icon: :at_symbol

Language select

A dropdown for setting your language.


This is a Petal Framework component. If you want to see how it's coded or copy it to modify it to your own needs you can run this command to see it in VSCode:

code deps/petal_framework/lib/petal_framework/web/components/language_select.ex

Language options are set in your config.exs:

config :petal_pro, :language_options, [
  %{locale: "en", flag: "πŸ‡¬πŸ‡§", label: "English"},
  %{locale: "fr", flag: "πŸ‡«πŸ‡·", label: "French"}

See translations for more info.


A flash notification component defined in Petal Framework. See docs.

This comes from flash_group/1 set in your layout:

<.flash_group flash={@flash} />

To see the implementation in VSCode:

code deps/petal_framework/lib/petal_framework/web/components/flash.ex

Page components

A set of generic page components to help with building pages. To see a list of them:

code deps/petal_framework/lib/petal_framework/web/components/page_components.ex


<.box padded>
  <%= live_component(PetalProWeb.OrgFormComponent, [...]) %>

Shows a heading and optional slot for buttons on the right hand side.

<.page_header title="Listing Discounts">
    label="New Discount"
    to={Routes.discount_index_path(@socket, :new)}

A panel with a sidebar for a menu, and a slot for content on the right.

<.sidebar_tabs_container current_page={:edit_profile} menu_items={[
    name: :edit_profile,
    label: gettext("Edit profile"),
    path: Routes.live_path(Endpoint, PetalProWeb.EditProfileLive),
    icon: :user_circle
  <%= render_slot(@inner_block) %>

User dropdown menu

A Petal Framework component. Displays the user's avatar and will show a dropdown menu upon being clicked. Used in the navbar. Displays a list of menu items (see the Menus section).

  current_user_name={if @current_user, do: user_name(@current_user), else: nil}

To see the implementation in VSCode:

code deps/petal_framework/lib/petal_framework/web/components/user_dropdown_menu.ex


Pretty markdown

Renders the markdown as HTML and uses the Tailwind Typography classes to prettify it.

<.pretty_markdown content={some_markdown} class="mx-auto" />

To see the implementation in VSCode:

code deps/petal_framework/lib/petal_framework/web/components/markdown.ex


Simple renders pure HTML from markdown.

<.markdown content={some_markdown} />

Social Button

  to={Routes.user_ueberauth_path(@conn_or_socket, :request, "google")}

  to={Routes.user_ueberauth_path(@conn_or_socket, :request, "github")}

This is a Petal Framework component. To see its implementation in VSCode:

code deps/petal_framework/lib/petal_framework/web/components/social_button.ex