Add QR code to item detail view

inventory-app/main.py

@@ -20,6 +20,7 @@ import markdown
 import pymongo
 import requests
 import safe
+import segno
 from flask import Flask, abort, g, make_response, redirect, render_template, request, session
 from flask_wtf import FlaskForm, RecaptchaField
 from jinja2 import Environment, FileSystemLoader
@@ -101,6 +102,10 @@ def render_user_link(item):
 def is_list(value):
     return isinstance(value, list)
 
+def render_qr_code(slug):
+    qr = segno.make(str("http://k6.ee/" + slug), micro=False, mode='byte', mask=3, error='L', boost_error=False)
+    return Markup(qr.svg_inline(light='black', dark='yellow', scale=3, border=1))
+
 jinja2.filters.FILTERS['format_name'] = format_name
 jinja2.filters.FILTERS['markdown'] = render_markdown
 jinja2.filters.FILTERS['timeago'] = render_timeago
@@ -111,6 +116,8 @@ jinja2.filters.FILTERS['is_list'] = is_list
 jinja2.filters.FILTERS['quote_plus'] = lambda u: urllib.parse.quote_plus(u)
 jinja2.filters.FILTERS['check_foreign_key_format'] = check_foreign_key_format
 jinja2.filters.FILTERS['display_name'] = render_user_display_name
+jinja2.filters.FILTERS['qr_code'] = render_qr_code
+
 env = Environment(loader=FileSystemLoader('templates/'))
 
 

inventory-app/templates/inventory_view.html

@@ -89,6 +89,15 @@
         </td>
       </tr>
 
+      <tr>
+        <td>QR Code (WIP)</td>
+        <td>
+        {% if item.get("shortener").slug %}
+          {{ item.get("shortener", {}).get("slug") | qr_code }}
+        {% endif %}
+        </td>
+      </tr>
+      
       <tr>
 	 <td>Issue tracker</td>
 	 <td><a href="{{ item.issue_tracker }}">Issue tracker</a></td>

requirements.txt

@@ -10,6 +10,7 @@ markdown
 pytz
 requests
 safe
+segno
 sepa
 Flask-WTF
 prometheus-flask-exporter