wire collection, PDP, cart, and search pages to page renderer

Stage 4 of the page builder: all shop pages now render via
PageRenderer instead of inline templates or PageTemplates.

- Collection: full filter bar moved to renderer (category pills,
  sort dropdown, CollectionFilters hook, empty state)
- PDP: related_products and reviews loaded via block data loaders
  instead of manual queries
- Cart: page definition loaded in mount, subtotal computed in render
- Search: page definition loaded in mount, handle_params unchanged
- Added Phoenix.VerifiedRoutes to PageRenderer for ~p sigil
- Net -55 lines (128 added, 183 removed)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

PROGRESS.md

@@ -458,7 +458,7 @@ See: [plan](docs/plans/shipping-sync.md) for implementation details
 See: [docs/plans/analytics-v2.md](docs/plans/analytics-v2.md) for v2 plan
 
 ### Page Editor
-**Status:** In progress — Stage 3 of 9 complete, 1284 tests
+**Status:** In progress — Stage 4 of 9 complete, 1284 tests
 
 Database-driven page builder. Every page is a flat list of blocks stored as JSON — add, remove, reorder, and edit blocks on any page. One generic renderer for all pages (no page-specific render functions). Portable blocks (hero, featured_products, image_text, etc.) work on any page. Page-specific blocks (product_hero, cart_items, etc.) are restricted to their native page. Block data loaders dynamically load data based on which blocks are on the page. ETS-cached page definitions. Mobile-first admin editor with live preview, undo/redo, accessible reordering (no drag-and-drop), inline settings forms, and "reset to defaults". CSS-driven page layout (not renderer-driven).
 
@@ -466,8 +466,8 @@ Database-driven page builder. Every page is a flat list of blocks stored as JSON
 1. ~~Foundation — data model, cache, block registry~~ ✅ (`35f96e4`)
 2. ~~Page renderer — generic renderer tested in isolation~~ ✅ (`32f54c7`)
 3. ~~Wire simple pages — Home, Content (x4), Contact, Error~~ ✅
-4. **Next →** Wire shop pages — Collection, PDP, Cart, Search
-5. Wire order pages + theme preview — CheckoutSuccess, Orders, OrderDetail, theme editor
+4. ~~Wire shop pages — Collection, PDP, Cart, Search~~ ✅
+5. **Next →** Wire order pages + theme preview — CheckoutSuccess, Orders, OrderDetail, theme editor
 6. Admin editor — page list + block management (reorder, add, remove, duplicate, save)
 7. Admin editor — inline block settings editing
 8. Live preview — split layout with real-time preview

docs/plans/page-builder.md

@@ -1,6 +1,6 @@
 # Page builder plan
 
-Status: In progress (Stage 3 complete)
+Status: In progress (Stage 4 complete)
 
 ## Context
 
@@ -635,21 +635,19 @@ Each stage is a commit point. Tests pass, all pages work, nothing is broken. Pic
 
 ---
 
-### Stage 4: Wire up shop pages (Collection, PDP, Cart, Search)
+### Stage 4: Wire up shop pages (Collection, PDP, Cart, Search) ✅
 
-**Goal:** the complex shop pages switch to PageRenderer. These have URL-driven state, streams, JS hooks, and event handlers.
+**Status:** Complete
 
-- [ ] Update `Shop.Collection` — `Pages.get_page("collection")`, keep filter/sort handle_params
-- [ ] Update `Shop.ProductShow` — `Pages.get_page("pdp")`, keep variant selection in handle_params, product_hero receives computed data
-- [ ] Update `Shop.Cart` — `Pages.get_page("cart")`, cart events still handled by CartHook
-- [ ] Update `Shop.Search` — `Pages.get_page("search")`, keep search handle_params
-- [ ] Page-level CSS: PDP layout rules (product_hero handles two-column internally)
-- [ ] Verify JS hooks survive: gallery carousel, lightbox, collection filters
-- [ ] Verify variant selection, cart add/remove, search all work
-
-**Commit:** `wire collection, PDP, cart, and search pages to page renderer`
-
-**Verify:** `mix test` passes, full manual walkthrough of product browsing → add to cart → search flow
+- [x] Update `Shop.Collection` — `Pages.get_page("collection")`, keep filter/sort handle_params
+- [x] Update `Shop.ProductShow` — `Pages.get_page("pdp")`, keep variant selection in handle_params, product_hero receives computed data. Related products + reviews loaded via block data loaders instead of manual queries.
+- [x] Update `Shop.Cart` — `Pages.get_page("cart")`, cart events still handled by CartHook
+- [x] Update `Shop.Search` — `Pages.get_page("search")`, keep search handle_params
+- [x] Renderer `filter_bar` block updated with full collection filter bar (category pills with live navigation, sort dropdown with phx-change, CollectionFilters hook, noscript fallback)
+- [x] Renderer `product_grid` block updated with dynamic show_category and empty state
+- [x] Added `Phoenix.VerifiedRoutes` to PageRenderer for `~p` sigil support
+- [x] Added `collection_path/2` helper and `page_main_class("collection")` to renderer
+- [x] 1284 tests pass, all pages verified visually
 
 ---
 

lib/berrypod_web/live/shop/cart.ex

@@ -1,11 +1,12 @@
 defmodule BerrypodWeb.Shop.Cart do
   use BerrypodWeb, :live_view
 
-  alias Berrypod.Cart
+  alias Berrypod.{Cart, Pages}
 
   @impl true
   def mount(_params, _session, socket) do
-    {:ok, assign(socket, page_title: "Cart")}
+    page = Pages.get_page("cart")
+    {:ok, socket |> assign(:page_title, "Cart") |> assign(:page, page)}
   end
 
   @impl true
@@ -13,7 +14,7 @@ defmodule BerrypodWeb.Shop.Cart do
     assigns = assign(assigns, :cart_page_subtotal, Cart.calculate_subtotal(assigns.cart_items))
 
     ~H"""
-    <BerrypodWeb.PageTemplates.cart {assigns} />
+    <BerrypodWeb.PageRenderer.render_page {assigns} />
     """
   end
 end

lib/berrypod_web/live/shop/collection.ex

@@ -1,7 +1,7 @@
 defmodule BerrypodWeb.Shop.Collection do
   use BerrypodWeb, :live_view
 
-  alias Berrypod.Products
+  alias Berrypod.{Pages, Products}
 
   @sort_options [
     {"featured", "Featured"},
@@ -14,8 +14,11 @@ defmodule BerrypodWeb.Shop.Collection do
 
   @impl true
   def mount(_params, _session, socket) do
+    page = Pages.get_page("collection")
+
     socket =
       socket
+      |> assign(:page, page)
       |> assign(:sort_options, @sort_options)
       |> assign(:current_sort, "featured")
 
@@ -81,113 +84,10 @@ defmodule BerrypodWeb.Shop.Collection do
   defp collection_description("Sale"), do: "Browse our current sale items."
   defp collection_description(title), do: "Browse our #{String.downcase(title)} collection."
 
-  defp collection_path(slug, "featured"), do: ~p"/collections/#{slug}"
-  defp collection_path(slug, sort), do: ~p"/collections/#{slug}?sort=#{sort}"
-
   @impl true
   def render(assigns) do
     ~H"""
-    <.shop_layout {layout_assigns(assigns)} active_page="collection">
-      <main id="main-content">
-        <.collection_header
-          title={@collection_title}
-          product_count={length(@products)}
-        />
-
-        <div class="page-container collection-body">
-          <.collection_filter_bar
-            categories={@categories}
-            current_slug={
-              case @current_category do
-                :sale -> "sale"
-                nil -> nil
-                cat -> cat.slug
-              end
-            }
-            sort_options={@sort_options}
-            current_sort={@current_sort}
-          />
-
-          <.product_grid theme_settings={@theme_settings}>
-            <%= for product <- @products do %>
-              <.product_card
-                product={product}
-                theme_settings={@theme_settings}
-                mode={@mode}
-                variant={:default}
-                show_category={@current_category in [nil, :sale]}
-              />
-            <% end %>
-          </.product_grid>
-
-          <%= if @products == [] do %>
-            <div class="collection-empty">
-              <p>No products found in this collection.</p>
-              <.link navigate={~p"/collections/all"} class="collection-empty-link">
-                View all products
-              </.link>
-            </div>
-          <% end %>
-        </div>
-      </main>
-    </.shop_layout>
-    """
-  end
-
-  defp collection_filter_bar(assigns) do
-    ~H"""
-    <div class="filter-bar">
-      <nav
-        aria-label="Collection filters"
-        id="collection-filters"
-        phx-hook="CollectionFilters"
-        class="collection-filters"
-      >
-        <ul class="collection-filter-pills">
-          <li>
-            <.link
-              navigate={collection_path("all", @current_sort)}
-              aria-current={@current_slug == nil && "page"}
-              class={["collection-filter-pill", @current_slug == nil && "active"]}
-            >
-              All
-            </.link>
-          </li>
-          <li>
-            <.link
-              navigate={collection_path("sale", @current_sort)}
-              aria-current={@current_slug == "sale" && "page"}
-              class={["collection-filter-pill", @current_slug == "sale" && "active"]}
-            >
-              Sale
-            </.link>
-          </li>
-          <%= for category <- @categories do %>
-            <li>
-              <.link
-                navigate={collection_path(category.slug, @current_sort)}
-                aria-current={@current_slug == category.slug && "page"}
-                class={["collection-filter-pill", @current_slug == category.slug && "active"]}
-              >
-                {category.name}
-              </.link>
-            </li>
-          <% end %>
-        </ul>
-      </nav>
-
-      <form action={~p"/collections/#{@current_slug || "all"}"} method="get" phx-change="sort_changed">
-        <.shop_select
-          name="sort"
-          options={@sort_options}
-          selected={@current_sort}
-          aria-label="Sort products"
-        />
-        <noscript>
-          <button type="submit" class="themed-button collection-sort-submit">Sort</button>
-        </noscript>
-      </form>
-    </div>
+    <BerrypodWeb.PageRenderer.render_page {assigns} />
     """
   end
 end

lib/berrypod_web/live/shop/product_show.ex

@@ -1,7 +1,7 @@
 defmodule BerrypodWeb.Shop.ProductShow do
   use BerrypodWeb, :live_view
 
-  alias Berrypod.{Analytics, Cart}
+  alias Berrypod.{Analytics, Cart, Pages}
   alias Berrypod.Images.Optimizer
   alias Berrypod.Products
   alias Berrypod.Products.{Product, ProductImage}
@@ -13,13 +13,6 @@ defmodule BerrypodWeb.Shop.ProductShow do
         {:ok, push_navigate(socket, to: ~p"/collections/all")}
 
       product ->
-        related_products =
-          Products.list_visible_products(
-            category: product.category,
-            limit: 4,
-            exclude: product.id
-          )
-
         all_images =
           (product.images || [])
           |> Enum.sort_by(& &1.position)
@@ -48,6 +41,8 @@ defmodule BerrypodWeb.Shop.ProductShow do
         og_url = base <> "/products/#{slug}"
         og_image = og_image_url(all_images)
 
+        page = Pages.get_page("pdp")
+
         socket =
           socket
           |> assign(:page_title, product.title)
@@ -58,12 +53,15 @@ defmodule BerrypodWeb.Shop.ProductShow do
           |> assign(:json_ld, product_json_ld(product, og_url, og_image, base))
           |> assign(:product, product)
           |> assign(:all_images, all_images)
-          |> assign(:related_products, related_products)
           |> assign(:quantity, 1)
           |> assign(:option_types, option_types)
           |> assign(:variants, variants)
+          |> assign(:page, page)
 
-        {:ok, socket}
+        # Block data loaders (related_products, reviews) run after product is assigned
+        extra = Pages.load_block_data(page.blocks, socket.assigns)
+
+        {:ok, assign(socket, extra)}
     end
   end
 
@@ -269,7 +267,7 @@ defmodule BerrypodWeb.Shop.ProductShow do
   @impl true
   def render(assigns) do
     ~H"""
-    <BerrypodWeb.PageTemplates.pdp {assigns} />
+    <BerrypodWeb.PageRenderer.render_page {assigns} />
     """
   end
 

lib/berrypod_web/live/shop/search.ex

@@ -1,11 +1,12 @@
 defmodule BerrypodWeb.Shop.Search do
   use BerrypodWeb, :live_view
 
-  alias Berrypod.Search
+  alias Berrypod.{Pages, Search}
 
   @impl true
   def mount(_params, _session, socket) do
-    {:ok, assign(socket, :page_title, "Search")}
+    page = Pages.get_page("search")
+    {:ok, socket |> assign(:page_title, "Search") |> assign(:page, page)}
   end
 
   @impl true
@@ -27,49 +28,7 @@ defmodule BerrypodWeb.Shop.Search do
   @impl true
   def render(assigns) do
     ~H"""
-    <.shop_layout {layout_assigns(assigns)} active_page="search">
-      <main id="main-content" class="page-container">
-        <.page_title text="Search" />
-
-        <form action="/search" method="get" phx-submit="search_submit" class="search-page-form">
-          <input
-            type="search"
-            name="q"
-            value={@search_page_query}
-            placeholder="Search products..."
-            class="themed-input"
-          />
-          <button type="submit" class="themed-button">Search</button>
-        </form>
-
-        <%= if @search_page_results != [] do %>
-          <p class="search-page-count">
-            {length(@search_page_results)} {if length(@search_page_results) == 1,
-              do: "result",
-              else: "results"} for "{@search_page_query}"
-          </p>
-          <.product_grid theme_settings={@theme_settings}>
-            <%= for product <- @search_page_results do %>
-              <.product_card
-                product={product}
-                theme_settings={@theme_settings}
-                mode={@mode}
-                variant={:default}
-              />
-            <% end %>
-          </.product_grid>
-        <% else %>
-          <%= if @search_page_query != "" do %>
-            <div class="collection-empty">
-              <p>No products found for "{@search_page_query}"</p>
-              <.link navigate="/collections/all" class="collection-empty-link">
-                Browse all products
-              </.link>
-            </div>
-          <% end %>
-        <% end %>
-      </main>
-    </.shop_layout>
+    <BerrypodWeb.PageRenderer.render_page {assigns} />
     """
   end
 end

lib/berrypod_web/page_renderer.ex

@@ -10,6 +10,11 @@ defmodule BerrypodWeb.PageRenderer do
   use Phoenix.Component
   use BerrypodWeb.ShopComponents
 
+  use Phoenix.VerifiedRoutes,
+    endpoint: BerrypodWeb.Endpoint,
+    router: BerrypodWeb.Router,
+    statics: BerrypodWeb.static_paths()
+
   alias Berrypod.Cart
 
   # ── Public API ──────────────────────────────────────────────────
@@ -263,14 +268,85 @@ defmodule BerrypodWeb.PageRenderer do
   end
 
   defp render_block(%{block: %{"type" => "filter_bar"}} = assigns) do
+    current_slug =
+      case assigns[:current_category] do
+        :sale -> "sale"
+        nil -> nil
+        cat -> cat.slug
+      end
+
+    assigns =
+      assigns
+      |> assign(:current_slug, current_slug)
+      |> assign(:current_sort, assigns[:current_sort] || "featured")
+      |> assign(:sort_options, assigns[:sort_options] || [])
+
     ~H"""
     <div class="page-container">
-      <.filter_bar categories={assigns[:categories] || []} />
+      <div class="filter-bar">
+        <nav
+          aria-label="Collection filters"
+          id="collection-filters"
+          phx-hook="CollectionFilters"
+          class="collection-filters"
+        >
+          <ul class="collection-filter-pills">
+            <li>
+              <.link
+                navigate={collection_path("all", @current_sort)}
+                aria-current={@current_slug == nil && "page"}
+                class={["collection-filter-pill", @current_slug == nil && "active"]}
+              >
+                All
+              </.link>
+            </li>
+            <li>
+              <.link
+                navigate={collection_path("sale", @current_sort)}
+                aria-current={@current_slug == "sale" && "page"}
+                class={["collection-filter-pill", @current_slug == "sale" && "active"]}
+              >
+                Sale
+              </.link>
+            </li>
+            <%= for category <- assigns[:categories] || [] do %>
+              <li>
+                <.link
+                  navigate={collection_path(category.slug, @current_sort)}
+                  aria-current={@current_slug == category.slug && "page"}
+                  class={["collection-filter-pill", @current_slug == category.slug && "active"]}
+                >
+                  {category.name}
+                </.link>
+              </li>
+            <% end %>
+          </ul>
+        </nav>
+
+        <form
+          action={~p"/collections/#{@current_slug || "all"}"}
+          method="get"
+          phx-change="sort_changed"
+        >
+          <.shop_select
+            name="sort"
+            options={@sort_options}
+            selected={@current_sort}
+            aria-label="Sort products"
+          />
+          <noscript>
+            <button type="submit" class="themed-button collection-sort-submit">Sort</button>
+          </noscript>
+        </form>
+      </div>
     </div>
     """
   end
 
   defp render_block(%{block: %{"type" => "product_grid"}} = assigns) do
+    show_category = assigns[:current_category] in [nil, :sale]
+    assigns = assign(assigns, :show_category, show_category)
+
     ~H"""
     <div class="page-container">
       <.product_grid theme_settings={@theme_settings}>
@@ -280,10 +356,19 @@ defmodule BerrypodWeb.PageRenderer do
             theme_settings={@theme_settings}
             mode={@mode}
             variant={:default}
-            show_category={true}
+            show_category={@show_category}
           />
         <% end %>
       </.product_grid>
+
+      <%= if (assigns[:products] || []) == [] do %>
+        <div class="collection-empty">
+          <p>No products found in this collection.</p>
+          <.link navigate={~p"/collections/all"} class="collection-empty-link">
+            View all products
+          </.link>
+        </div>
+      <% end %>
     </div>
     """
   end
@@ -722,6 +807,7 @@ defmodule BerrypodWeb.PageRenderer do
   def page_main_class("orders"), do: "page-container orders-main"
   def page_main_class("order_detail"), do: "page-container order-detail-main"
   def page_main_class("error"), do: "error-main"
+  def page_main_class("collection"), do: nil
   def page_main_class("pdp"), do: "page-container"
   def page_main_class("search"), do: "page-container"
   def page_main_class("about"), do: "content-page"
@@ -767,6 +853,9 @@ defmodule BerrypodWeb.PageRenderer do
 
   defp breadcrumb_items(_), do: []
 
+  defp collection_path(slug, "featured"), do: ~p"/collections/#{slug}"
+  defp collection_path(slug, sort), do: ~p"/collections/#{slug}?sort=#{sort}"
+
   # Reuse from PageTemplates
   def format_order_status("unfulfilled"), do: "Being prepared"
   def format_order_status("submitted"), do: "Sent to printer"