From 42c4bdddefd44523e1005a621a21871f6337bedd Mon Sep 17 00:00:00 2001
From: Brian Tiemann <btman@mac.com>
Date: Wed, 21 Aug 2024 17:50:09 -0400
Subject: [PATCH] Add clamp_height to the markdown filter which limits max
 height to 200 (scrollable) on the container div

---
 netbox/project-static/dist/netbox.css         | Bin 543336 -> 543409 bytes
 .../styles/custom/_markdown.scss              |   5 +++++
 .../templates/builtins/customfield_value.html |   2 +-
 .../templatetags/builtins/filters.py          |  13 +++++++++++--
 4 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/netbox/project-static/dist/netbox.css b/netbox/project-static/dist/netbox.css
index 80d23acfa6878f2ea8c5b86d928f6369cb5131b1..dcc103d85d3afb9a3c05594081549e11a2f6f51a 100644
GIT binary patch
delta 104
zcmaDcMRDU)#fBEf7N!>F7M2#)7Pc1lEga`PJW5jR^ommRQc{ajQ*?6^i?UPl%k%Wg
zQj1D5lM{1vi<67;b8@P46DxExQZv&tO00|w3<@f&^MNYTa`MY{E3F_(wx9Fhn8gSH
D0Np2I

delta 31
ncmdluRq@3X#fBEf7N!>F7M2#)7Pc1lEga`Pwo7<&%wz-ry(9|C

diff --git a/netbox/project-static/styles/custom/_markdown.scss b/netbox/project-static/styles/custom/_markdown.scss
index cb4527f37..fb9182a19 100644
--- a/netbox/project-static/styles/custom/_markdown.scss
+++ b/netbox/project-static/styles/custom/_markdown.scss
@@ -35,6 +35,11 @@ td > .rendered-markdown {
   }
 }
 
+td > .rendered-markdown.vertical-scroll {
+  max-height: 200px;
+  overflow-y: scroll;
+}
+
 // Markdown preview
 .markdown-widget {
   .preview {
diff --git a/netbox/utilities/templates/builtins/customfield_value.html b/netbox/utilities/templates/builtins/customfield_value.html
index dbf10e1bf..7fe8d1eff 100644
--- a/netbox/utilities/templates/builtins/customfield_value.html
+++ b/netbox/utilities/templates/builtins/customfield_value.html
@@ -3,7 +3,7 @@
 {% if customfield.type == 'integer' and value is not None %}
   {{ value }}
 {% elif customfield.type == 'longtext' and value %}
-  {{ value|markdown }}
+  {{ value|markdown:True }}
 {% elif customfield.type == 'boolean' and value == True %}
   {% checkmark value true="True" %}
 {% elif customfield.type == 'boolean' and value == False %}
diff --git a/netbox/utilities/templatetags/builtins/filters.py b/netbox/utilities/templatetags/builtins/filters.py
index 738b9a23e..03c91b132 100644
--- a/netbox/utilities/templatetags/builtins/filters.py
+++ b/netbox/utilities/templatetags/builtins/filters.py
@@ -159,11 +159,16 @@ def content_type_id(model):
 #
 
 @register.filter('markdown', is_safe=True)
-def render_markdown(value):
+def render_markdown(value, clamp_height=False):
     """
     Render a string as Markdown. This filter is invoked as "markdown":
 
         {{ md_source_text|markdown }}
+
+    If clamp_height is True, the "vertical-scroll" class will be added to the container div which sets a max-height
+    and adds a vertical scrollbar:
+
+        {{ md_source_text|markdown:True }}
     """
     if not value:
         return ''
@@ -178,7 +183,11 @@ def render_markdown(value):
 
     # If the string is not empty wrap it in rendered-markdown to style tables
     if html:
-        html = f'<div class="rendered-markdown">{html}</div>'
+        classes = ['rendered-markdown']
+        if clamp_height:
+            classes.append('vertical-scroll')
+        classes_str = ' '.join(classes)
+        html = f'<div class="{classes_str}">{html}</div>'
 
     schemes = get_config().ALLOWED_URL_SCHEMES