For #46 ✨ add categs links

on post detail page as menu for search

src/posts/context_processors.py

@@ -15,7 +15,6 @@ def build_crumbs(request):
     crumbs.append({"name": "posts", "url": reverse("posts:post_list")})
     if match.url_name == "post_detail":
         post = get_object_or_404(Post, slug=match.kwargs["slug"])
-        print(post)
         crumbs.append(
             {
                 "name": post.title,
@@ -25,5 +24,4 @@ def build_crumbs(request):
                 ),
             }
         )
-    print("crumbs are ", crumbs)
     return {"crumbs": crumbs}

src/posts/mixins.py

@@ -0,0 +1,27 @@
+from django.urls import reverse
+
+
+class CategoryCrumbMixin:
+    def get_post_categs_path(self) -> list:
+        """
+        list of dict's based on a given p.category:
+        {key:p.category slug, value: p.category name}
+        incl ancestors for UI: categs links
+        """
+        post = self.get_object()
+        cats_names = post.categ.get_name_slug_chain()
+        slugs_keys = cats_names["path_slug"].split("/")
+        names_vals = cats_names["path_name"].split("/")
+        if len(slugs_keys) == len(names_vals):
+            res = dict(zip(slugs_keys, names_vals, strict=True))
+        else:
+            return []
+        chain_crumbs = []
+        for slug, name in res.items():
+            chain_crumbs.append(
+                {
+                    "path": reverse("posts:cat_search", kwargs={"slug": slug}),
+                    "name": name,
+                }
+            )
+        return chain_crumbs

src/posts/models/categ_model.py

@@ -49,5 +49,26 @@ def get_full_path(self):
             path_slug += f"/{self.slug}"
         return path_slug
 
+    def get_name_slug_chain(self) -> dict:
+        """
+        create dict of name(s)/slug(s) of a given category
+        incl ancestors
+        """
+        if self.is_root():
+            path_name = self.name
+            path_slug = self.slug
+
+        else:
+            path_name = "/".join(
+                list(self.get_ancestors().values_list("name", flat=True))
+            )
+            path_name += f"/{self.name}"
+            path_slug = "/".join(
+                list(self.get_ancestors().values_list("slug", flat=True))
+            )
+            path_slug += f"/{self.slug}"
+
+        return {"path_name": path_name, "path_slug": path_slug}
+
     def __str__(self):
         return f"Category: {self.name}"

src/posts/templatetags/tree_cats.py

@@ -60,7 +60,7 @@ def recursetree(parser, token):
     return RecrTreeNode(nodelist, queryset_var)
 
 
-@register.inclusion_tag("components/categ_menu.html")
+@register.inclusion_tag("components/categ_bar.html")
 def show_categs(**kwargs):
     categs = Category.get_root_nodes()
     return {"categs": categs, **kwargs}

src/posts/tests/test_web.py

@@ -11,7 +11,7 @@
 from src.contacts.tests.factories import NewsLetterFactory
 from src.core.utils.admin_help import admin_change_url
 from src.posts.models.post_model import Post
-from src.posts.tests.factories import PostFactory
+from src.posts.tests.factories import CategoryFactory, PostFactory
 
 User = get_user_model()
 TestApp.__test__ = False
@@ -101,3 +101,37 @@ def test_tag_seacrh(self):
 
         self.assertEqual(resp2.status_code, 200)
         self.assertEqual(posts.count(), 1)
+
+
+@override_settings(LANGUAGE_CODE="ru", LANGUAGES=(("ru", "Russian"),))
+class CategMenuTestCase(WebTest):
+    def setUp(self) -> None:
+        self.categ_root = CategoryFactory(name="grand_pa")
+        self.categ_pa = self.categ_root.add_child(name="pa")
+        self.categ_kid = self.categ_pa.add_child(name="kid")
+        self.post = PostFactory(
+            categ=self.categ_kid, status=Post.CurrentStatus.PUB.value
+        )
+
+    def test_post_detail_categs_menu(self):
+        """display post detail page with corresp categs as links"""
+        chain_ = self.post.categ.get_name_slug_chain()
+        expected_chain = {
+            "path_name": "grand_pa/pa/kid",
+            "path_slug": "grand_pa/pa/kid",
+        }
+
+        start_url = reverse("posts:post_detail", kwargs={"slug": self.post.slug})
+
+        resp = self.app.get(start_url)
+
+        post_categ_menu = resp.html.find("ol", id="post_categ")
+        a_links = resp.html.find_all("a", class_="post_categ__link")
+        href = a_links[0].attrs["href"]
+        lang = href.split("/")[1]
+
+        self.assertEqual(self.categ_root.get_descendants().count(), 2)
+        self.assertEqual(chain_, expected_chain)
+        self.assertIsNotNone(post_categ_menu)
+        self.assertTrue(len(a_links), 3)
+        self.assertTrue(lang, "ru")

src/posts/views.py

@@ -10,6 +10,8 @@
 from src.posts.models.categ_model import Category
 from src.posts.models.post_model import Post
 
+from .mixins import CategoryCrumbMixin
+
 
 class PostList(ListView):
 
@@ -21,18 +23,23 @@ class PostList(ListView):
     paginate_by = 2
 
     def get_queryset(self):
-        print("looking for posts")
+        # print("looking for posts")
         return (
             Post.objects.get_public()
             .select_related("categ", "author")
             .prefetch_related("tags")
         )
 
 
-class PostDetail(DetailView):
+class PostDetail(CategoryCrumbMixin, DetailView):
     model = Post
     template_name = "posts/post_detail.html"
 
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data(**kwargs)
+        ctx["cats_path"] = self.get_post_categs_path()
+        return ctx
+
 
 class PostTagSearch(ListView):
     template_name = "posts/post_list.html"
@@ -70,7 +77,6 @@ class SearchPost(ListView):
     search in ukrainian: via model manager(no config in this lang)
     """
 
-    # model = Post
     template_name = "posts/post_list.html"
     context_object_name = "posts"
     paginate_by = 5

src/templates/components/post_categs.html

@@ -0,0 +1,12 @@
+{% load static %}
+<nav style="--bs-breadcrumb-divider: url(&#34;data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8'%3E%3Cpath d='M2.5 0L1 1.5 3.5 4 1 6.5 2.5 8l4-4-4-4z' fill='currentColor'/%3E%3C/svg%3E&#34;);"aria-label="breadcrumb">
+  <ol class="breadcrumb" id="post_categ">
+    {% for item in categ_dict  %}
+    <li class="breadcrumb-item">
+      <a href="{{item.path}}" class="post_categ__link">
+        {{item.name}}
+    </a>
+    </li>
+  {% endfor %}
+  </ol>
+</nav>

src/templates/posts/post_detail.html

@@ -15,7 +15,10 @@
 
     <h3>{{post.title}}</h3>
     <p>{{post.created_at|date:"F d, Y"}}</p>
-    <strong>{%trans "category" %}: {{post.categ.name}}</strong>
+
+    <div><strong>{%trans "category" %}</strong>:
+      {% include "components/post_categs.html" with categ_dict=cats_path %}
+    </div>
     <div class="content">
         {{post.content|safe}}
     </div>