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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
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Files
lib/modules/publishing/web/preview.ex
defmodule PhoenixKit.Modules.Publishing.Web.Preview do
@moduledoc """
Preview rendering for publishing posts.
"""
use PhoenixKitWeb, :live_view
use Gettext, backend: PhoenixKitWeb.Gettext
require Logger
alias PhoenixKit.Modules.Publishing
# alias PhoenixKit.Modules.Publishing.PageBuilder # COMMENTED OUT: Component system
alias PhoenixKit.Modules.Publishing.Renderer
alias PhoenixKit.Modules.Publishing.Web.Editor.Helpers
alias PhoenixKit.Settings
alias PhoenixKit.Utils.Routes
@impl true
def mount(params, _session, socket) do
group_slug = params["group"] || params["category"] || params["type"]
socket =
socket
|> assign(:project_title, Settings.get_project_title())
|> assign(:page_title, "Preview")
|> assign(:group_slug, group_slug)
|> assign(:group_name, Publishing.group_name(group_slug) || group_slug)
|> assign(
:current_path,
Routes.path("/admin/publishing/#{group_slug}/preview")
)
|> assign(:rendered_content, nil)
|> assign(:error, nil)
{:ok, socket}
end
@impl true
def handle_params(%{"post_uuid" => post_uuid} = params, _uri, socket) do
group_slug = socket.assigns.group_slug
language = params["lang"]
version = params["v"]
case Publishing.read_post_by_uuid(post_uuid, language, version) do
{:ok, post} ->
case render_markdown_content(post.content) do
{:ok, rendered_html} ->
{:noreply,
socket
|> assign(:post, Map.put(post, :uuid, post_uuid))
|> assign(:group_slug, post.group)
|> assign(:group_name, Publishing.group_name(post.group) || post.group)
|> assign(:rendered_content, rendered_html)
|> assign(:error, nil)}
{:error, error_message} ->
{:noreply,
socket
|> assign(:post, Map.put(post, :uuid, post_uuid))
|> assign(:group_slug, post.group)
|> assign(:group_name, Publishing.group_name(post.group) || post.group)
|> assign(:rendered_content, nil)
|> assign(:error, error_message)}
end
{:error, reason} ->
Logger.warning("[Publishing.Preview] Preview failed for #{post_uuid}: #{inspect(reason)}")
{:noreply,
socket
|> put_flash(:error, gettext("Post not found"))
|> push_navigate(to: Routes.path("/admin/publishing/#{group_slug}"))}
end
end
def handle_params(_params, _uri, socket) do
{:noreply,
socket
|> put_flash(:error, gettext("No post specified"))
|> push_navigate(to: Routes.path("/admin/publishing/#{socket.assigns.group_slug}"))}
end
@impl true
def handle_event("back_to_editor", _params, socket) do
post = socket.assigns[:post]
group_slug = socket.assigns.group_slug
destination =
if post && post[:uuid] do
Helpers.build_edit_url(group_slug, post,
lang: post[:language],
version: post[:version]
)
else
Routes.path("/admin/publishing/#{group_slug}")
end
{:noreply, push_navigate(socket, to: destination)}
end
defp render_markdown_content(content) when is_binary(content) do
content
|> Renderer.render_markdown()
|> then(&{:ok, &1})
rescue
error ->
Logger.error("[Publishing.Preview] Markdown rendering failed: #{inspect(error)}")
{:error, gettext("Failed to render preview.")}
end
end