Base URL configuration options (#4749)

* Improve construct_absolute_url method

- Look for hard-coded site URL if provided
- Otherwise look for specified site URL
- Otherwise look at the provided request object

* Refactor existing code which used base URL setting

* Update docs

* Validate that a provided base URL is valid

InvenTree/report/models.py

@@ -20,7 +20,7 @@ import common.models
 import order.models
 import part.models
 import stock.models
-from InvenTree.helpers import validateFilterString
+from InvenTree.helpers import get_base_url, validateFilterString
 from InvenTree.models import MetadataMixin
 from plugin.registry import registry
 
@@ -203,7 +203,7 @@ class ReportTemplateBase(MetadataMixin, ReportBase):
         # Generate custom context data based on the particular report subclass
         context = self.get_context_data(request)
 
-        context['base_url'] = common.models.InvenTreeSetting.get_setting('INVENTREE_BASE_URL')
+        context['base_url'] = get_base_url(request=request)
         context['date'] = datetime.datetime.now().date()
         context['datetime'] = datetime.datetime.now()
         context['default_page_size'] = common.models.InvenTreeSetting.get_setting('REPORT_DEFAULT_PAGE_SIZE')

InvenTree/report/templatetags/report.py

@@ -205,10 +205,7 @@ def logo_image(**kwargs):
 def internal_link(link, text):
     """Make a <a></a> href which points to an InvenTree URL.
 
-    Important Note: This only works if the INVENTREE_BASE_URL parameter is set!
-
-    If the INVENTREE_BASE_URL parameter is not configured,
-    the text will be returned (unlinked)
+    Uses the InvenTree.helpers.construct_absolute_url function to build the URL.
     """
     text = str(text)