Input type="checkbox"> is for selfstanding checkboxes (boolean on the backend), not for multi value fields. I have a LiveView page where I have a small form.This form is supposed ton have a group of radio buttons, and a group of checkboxes. This post builds a custom multiselect checkbox group input for selecting which tags to associate with a database record in our Phoenix application. Here we build a custom multiselect checkbox group input for selecting which tags to associate with a database record in our Phoenix application. This tutorial teaches you how to create a todo list with Phoenix LiveView that will update for all users in realtime. Generates a checkbox. This function is useful for sending boolean values to the server. Examples. A complete beginners step-by-step tutorial for building a Todo List in Phoenix. In my application to search for rooms I have added some features in room.