add custom logo option

InvenTree/InvenTree/settings.py

@@ -25,6 +25,7 @@ import moneyed
 import yaml
 from django.utils.translation import gettext_lazy as _
 from django.contrib.messages import constants as messages
+from django.core.files.storage import default_storage
 import django.conf.locale
 
 from .config import get_base_dir, get_config_file, get_plugin_file, get_setting
@@ -920,3 +921,13 @@ CUSTOMIZE = get_setting(
     {}
 )
 
+CUSTOM_LOGO = get_setting(
+    'INVENTREE_LOGO',
+    CONFIG.get('logo', False),
+    False
+)
+
+# check that the logo-file exsists in media
+if CUSTOM_LOGO and not default_storage.exists(CUSTOM_LOGO):
+    CUSTOM_LOGO = False
+    logger.warning("The custom logo file could not be found in the default media storage")

InvenTree/part/templatetags/inventree_extras.py

@@ -18,7 +18,8 @@ from django.conf import settings as djangosettings
 from django import template
 from django.urls import reverse
 from django.utils.safestring import mark_safe
-from django.templatetags.static import StaticNode
+from django.templatetags.static import StaticNode, static
+from django.core.files.storage import default_storage
 
 from InvenTree import version, settings
 
@@ -529,6 +530,15 @@ def inventree_customize(reference, *args, **kwargs):
     return djangosettings.CUSTOMIZE.get(reference, '')
 
 
+@register.simple_tag()
+def inventree_logo(*args, **kwargs):
+    """ Return the path to the logo-file """
+
+    if settings.CUSTOM_LOGO:
+        return default_storage.url(settings.CUSTOM_LOGO)
+    return static('img/inventree.png')
+
+
 class I18nStaticNode(StaticNode):
     """
     custom StaticNode

InvenTree/templates/503.html

@@ -30,7 +30,7 @@
             <div class='container-fluid'>
 
                 <div class='clearfix content-heading login-header d-flex flex-wrap'>
-                    <img class="pull-left" src="{% static 'img/inventree.png' %}" width="60" height="60"/>
+                    <img class="pull-left" src="{% inventree_logo %}" width="60" height="60"/>
                     {% include "spacer.html" %}
                     <span class='float-right'><h3>{% block body_title %}{% trans 'Site is in Maintenance' %}{% endblock %}</h3></span>
                 </div>

InvenTree/templates/account/base.html

@@ -67,7 +67,7 @@
             <div class='container-fluid'>
 
                 <div class='clearfix content-heading login-header d-flex flex-wrap'>
-                    <img class="pull-left" src="{% static 'img/inventree.png' %}" width="60" height="60"/>
+                    <img class="pull-left" src="{% inventree_logo %}" width="60" height="60"/>
                     {% include "spacer.html" %}
                     <span class='float-right'><h3>{% inventree_title %}</h3></span>
                 </div>

InvenTree/templates/navbar.html

@@ -14,7 +14,7 @@
 <nav class="navbar {% if sticky %}fixed-top{% endif %} navbar-expand-lg navbar-light">
   <div class="container-fluid">
     <div class="navbar-header clearfix content-heading">
-      <a class="navbar-brand" id='logo' href="{% url 'index' %}" style="padding-top: 7px; padding-bottom: 5px;"><img src="{% static 'img/inventree.png' %}" width="32" height="32" style="display:block; margin: auto;"/></a>
+      <a class="navbar-brand" id='logo' href="{% url 'index' %}" style="padding-top: 7px; padding-bottom: 5px;"><img src="{% inventree_logo %}" width="32" height="32" style="display:block; margin: auto;"/></a>
     </div>
     <div class="navbar-collapse collapse" id="navbar-objects">
       <ul class="navbar-nav">