Update parameter report helper (#11690)

* Update parameter report helper

- Fallback to case insensitive lookup

* Add default value in case parameter is not found

* Add new report helper func

src/backend/InvenTree/report/templatetags/report.py

@@ -473,10 +473,10 @@ def parameter(
 
     Arguments:
         instance: A Model object
-        parameter_name: The name of the parameter to retrieve
+        parameter_name: The name of the parameter to retrieve (case insensitive)
 
     Returns:
-        A Parameter object, or None if not found
+        A Parameter object, or the provided default value if not found
     """
     if instance is None:
         raise ValueError('parameter tag requires a valid Model instance')
@@ -484,12 +484,46 @@ def parameter(
     if not isinstance(instance, Model) or not hasattr(instance, 'parameters'):
         raise TypeError("parameter tag requires a Model with 'parameters' attribute")
 
-    return (
-        instance.parameters
+    # First try with exact match
+    if (
+        parameter := instance.parameters
         .prefetch_related('template')
         .filter(template__name=parameter_name)
         .first()
-    )
+    ):
+        return parameter
+
+    # Next, try with case-insensitive match
+    if (
+        parameter := instance.parameters
+        .prefetch_related('template')
+        .filter(template__name__iexact=parameter_name)
+        .first()
+    ):
+        return parameter
+
+    return None
+
+
+@register.simple_tag()
+def parameter_value(
+    instance: Model, parameter_name: str, backup_value: Optional[Any] = None
+) -> str:
+    """Return the value of a Parameter for the given part and parameter name.
+
+    Arguments:
+        instance: A Model object
+        parameter_name: The name of the parameter to retrieve (case insensitive)
+        backup_value: A backup value to return if the parameter is not found
+
+    Returns:
+        The value of the Parameter, or the backup_value if not found
+    """
+    if param := parameter(instance, parameter_name):
+        return param.data
+
+    # If the matching parameter is not found, return the backup value
+    return backup_value
 
 
 @register.simple_tag()