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Create message form live component #9

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fa2c80f
Fix LiveView crash on posting a new message
lgmfred Jul 24, 2023
d5d551d
Live navigate to show message LiveView
lgmfred Jul 24, 2023
b5cfde1
Create message form live component
lgmfred Jul 24, 2023
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44 changes: 44 additions & 0 deletions lib/chat_app_live_web/live/chat_form_component.ex
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Original file line number Diff line number Diff line change
@@ -0,0 +1,44 @@
defmodule ChatAppLiveWeb.ChatFormComponent do
use ChatAppLiveWeb, :live_component

alias ChatAppLive.Messages
alias ChatAppLive.Messages.Message

def mount(socket) do
changeset = Messages.change_message(%Message{})
{:ok, assign(socket, form: to_form(changeset))}
end

def render(assigns) do
~H"""
<div>
<.form for={@form} phx-submit="save" phx-target={@myself}>
<label for="comment" class="sr-only text-red-700">Add your comment</label>
<.input type="textarea" field={@form[:content]} />

<div class="flex-shrink-0">
<button
type="submit"
class="inline-flex items-center rounded-md bg-indigo-600 px-3 py-2 text-sm font-semibold text-white shadow-sm hover:bg-indigo-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-indigo-600"
>
Post
</button>
</div>
</.form>
</div>
"""
end

def handle_event("save", %{"message" => message_params}, socket) do
case Messages.create_message(message_params) do
{:ok, message} ->
send(self(), {:message_created, message})

changeset = Messages.change_message(%Message{})
{:noreply, assign(socket, form: to_form(changeset))}

{:error, %Ecto.Changeset{} = changeset} ->
{:noreply, assign(socket, form: to_form(changeset))}
end
end
end
136 changes: 61 additions & 75 deletions lib/chat_app_live_web/live/chat_form_live.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -2,21 +2,11 @@ defmodule ChatAppLiveWeb.ChatFormLive do
use ChatAppLiveWeb, :live_view

alias ChatAppLive.Messages
alias ChatAppLive.Messages.Message
alias ChatAppLiveWeb.ChatFormComponent

def mount(_params, _session, socket) do
messages = Messages.list_messages()
{:ok, assign(socket, form: to_form(Messages.change_message(%Message{})), messages: messages)}
end

def handle_event("save", %{"message" => message_params}, socket) do
case Messages.create_message(message_params) do
{:ok, _message} ->
{:noreply, assign(socket, push_patch(socket, to: ~p"/messages"))}

{:error, %Ecto.Changeset{} = changeset} ->
{:noreply, assign(socket, form: to_form(changeset))}
end
{:ok, assign(socket, messages: messages)}
end

def render(assigns) do
Expand All @@ -30,19 +20,7 @@ defmodule ChatAppLiveWeb.ChatFormLive do
/>
</div>
<div class="min-w-0 flex-1">
<.form for={@form} phx-submit="save">
<label for="comment" class="sr-only">Add your comment</label>
<.input type="textarea" field={@form[:content]} />

<div class="flex-shrink-0">
<button
type="submit"
class="inline-flex items-center rounded-md bg-indigo-600 px-3 py-2 text-sm font-semibold text-white shadow-sm hover:bg-indigo-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-indigo-600"
>
Post
</button>
</div>
</.form>
<.live_component module={ChatFormComponent} id={:new} />
</div>
</div>

Expand All @@ -54,58 +32,66 @@ defmodule ChatAppLiveWeb.ChatFormLive do

<div class="flex items-start space-y-10">
<ul role="list" class="divide-y divide-gray-100">
<%= for message <- @messages do %>
<li class="flex flex-wrap items-center justify-between gap-x-6 gap-y-4 py-5 sm:flex-nowrap">
<div>
<p class="text-sm font-semibold leading-6 text-gray-900">
<a href="#" class="hover:underline">
<%= message.content %>
</a>
</p>
<div class="mt-1 flex items-center gap-x-2 text-xs leading-5 text-gray-500">
<p>
<a href="#" class="hover:underline">Njoki K</a>
</p>
<svg viewBox="0 0 2 2" class="h-0.5 w-0.5 fill-current">
<circle cx="1" cy="1" r="1" />
</svg>
<p><time datetime="2023-01-23T22:34Z">2d ago</time></p>
</div>
</div>
<dl class="flex w-full flex-none justify-between gap-x-8 sm:w-auto">
<div class="flex -space-x-0.5">
<a
href="#"
class="text-white bg-blue-700 hover:bg-blue-800 focus:ring-4 focus:ring-blue-300 font-medium rounded-lg text-sm px-5 py-2.5 mr-2 mb-2 dark:bg-blue-600 dark:hover:bg-blue-700 focus:outline-none dark:focus:ring-blue-800"
>
Edit
</a>
</div>
<div class="flex w-16 gap-x-2.5">
<dt>
<span class="sr-only">Total comments</span>
<svg
class="h-6 w-6 text-gray-400"
fill="none"
viewBox="0 0 24 24"
stroke-width="1.5"
stroke="currentColor"
aria-hidden="true"
>
<path
stroke-linecap="round"
stroke-linejoin="round"
d="M2.25 12.76c0 1.6 1.123 2.994 2.707 3.227 1.087.16 2.185.283 3.293.369V21l4.076-4.076a1.526 1.526 0 011.037-.443 48.282 48.282 0 005.68-.494c1.584-.233 2.707-1.626 2.707-3.228V6.741c0-1.602-1.123-2.995-2.707-3.228A48.394 48.394 0 0012 3c-2.392 0-4.744.175-7.043.513C3.373 3.746 2.25 5.14 2.25 6.741v6.018z"
/>
</svg>
</dt>
<dd class="text-sm leading-6 text-gray-900">2</dd>
</div>
</dl>
</li>
<% end %>
<.message :for={message <- @messages} message={message} message_id={message.id} />
</ul>
</div>
"""
end

def message(assigns) do
~H"""
<li class="flex flex-wrap items-center justify-between gap-x-6 gap-y-4 py-5 sm:flex-nowrap">
<div>
<p class="text-sm font-semibold leading-6 text-gray-900">
<.link navigate={~p"/message/#{@message_id}"} class="hover:underline">
<%= @message.content %>
</.link>
</p>
<div class="mt-1 flex items-center gap-x-2 text-xs leading-5 text-gray-500">
<p>
<a href="#" class="hover:underline">Njoki K</a>
</p>
<svg viewBox="0 0 2 2" class="h-0.5 w-0.5 fill-current">
<circle cx="1" cy="1" r="1" />
</svg>
<p><time datetime="2023-01-23T22:34Z">2d ago</time></p>
</div>
</div>
<dl class="flex w-full flex-none justify-between gap-x-8 sm:w-auto">
<div class="flex -space-x-0.5">
<a
href="#"
class="text-white bg-blue-700 hover:bg-blue-800 focus:ring-4 focus:ring-blue-300 font-medium rounded-lg text-sm px-5 py-2.5 mr-2 mb-2 dark:bg-blue-600 dark:hover:bg-blue-700 focus:outline-none dark:focus:ring-blue-800"
>
Edit
</a>
</div>
<div class="flex w-16 gap-x-2.5">
<dt>
<span class="sr-only">Total comments</span>
<svg
class="h-6 w-6 text-gray-400"
fill="none"
viewBox="0 0 24 24"
stroke-width="1.5"
stroke="currentColor"
aria-hidden="true"
>
<path
stroke-linecap="round"
stroke-linejoin="round"
d="M2.25 12.76c0 1.6 1.123 2.994 2.707 3.227 1.087.16 2.185.283 3.293.369V21l4.076-4.076a1.526 1.526 0 011.037-.443 48.282 48.282 0 005.68-.494c1.584-.233 2.707-1.626 2.707-3.228V6.741c0-1.602-1.123-2.995-2.707-3.228A48.394 48.394 0 0012 3c-2.392 0-4.744.175-7.043.513C3.373 3.746 2.25 5.14 2.25 6.741v6.018z"
/>
</svg>
</dt>
<dd class="text-sm leading-6 text-gray-900">2</dd>
</div>
</dl>
</li>
"""
end

def handle_info({:message_created, message}, socket) do
{:noreply, assign(socket, messages: [message | socket.assigns.messages])}
end
end