Add summary to content

website/common/models.py

@@ -9,7 +9,7 @@ from wagtail.fields import StreamField
 from wagtail.images import get_image_model_string
 from wagtail.models import Page
 
-from .streamfield import get_blocks, get_word_count
+from .streamfield import get_blocks, get_word_count, truncate_streamfield
 from .utils import TocEntry, get_table_of_contents
 
 
@@ -63,6 +63,10 @@ class BaseContentMixin(models.Model):
     def word_count(self) -> int:
         return get_word_count(self.body)
 
+    @cached_property
+    def summary(self) -> str:
+        return truncate_streamfield(self.body, 50)
+
 
 class ContentPage(BasePage, BaseContentMixin):  # type: ignore[misc]
     subpage_types: list[Any] = []

website/common/streamfield.py

@@ -6,7 +6,7 @@ from django.utils.text import smart_split
 from wagtail import blocks
 from wagtail.embeds.blocks import EmbedBlock
 
-IGNORE_WORDCOUNT_BLOCKS = (blocks.RawHTMLBlock, EmbedBlock)
+IGNORE_PLAINTEXT_BLOCKS = (blocks.RawHTMLBlock, EmbedBlock)
 
 
 class LoremBlock(blocks.StructBlock):
@@ -35,11 +35,21 @@ def get_blocks() -> list[tuple[str, blocks.BaseBlock]]:
 
 def get_plain_text(value: blocks.StreamValue) -> Iterator[str]:
     for block in value:
-        if isinstance(block.block_type, IGNORE_WORDCOUNT_BLOCKS):
+        if isinstance(block.block_type, IGNORE_PLAINTEXT_BLOCKS):
             continue
         yield strip_tags(str(block))
 
 
+def truncate_streamfield(value: blocks.StreamValue, words: int) -> str:
+    collected_words: list[str] = []
+    for block_text in get_plain_text(value):
+        collected_words.extend(smart_split(block_text))
+        if len(collected_words) >= words:
+            break
+
+    return " ".join(collected_words[:words])
+
+
 def get_word_count(value: blocks.StreamValue) -> int:
     count = 0
     for chunk in get_plain_text(value):

website/common/templates/common/listing-item.html

@@ -13,7 +13,7 @@
       <div>
         <h2 class="title is-3"><a href="{% pageurl page %}">{{ page.title }}</a></h2>
         {% include "common/content-details.html" %}
-        {% lorem 1 p %}
+        <p>{{ page.summary }}</p>
       </div>
     </div>
   </div>