Updates and Bug Fixes

README.md

@@ -6,6 +6,25 @@ A website template co-developed with NMHSs in Africa to support their digital tr
 practices in web design and development, data visualization and hydro meteorological and climate communications to
 ensure that NMHSs have a modern, responsive, and user-friendly website.
 
+## Live Instances
+NMHSs that have adopted ClimWeb across Africa:
+- 🇧🇯 [Benin](https://www.meteobenin.bj/)
+- 🇧🇫 [Burkina Faso](https://www.meteoburkina.bf/)
+- 🇧🇮 [Burundi](https://www.igebu.bi/)
+- 🇹🇩 [Chad](https://www.meteotchad.org/)
+- 🇪🇹 [Ethiopia](https://www.ethiomet.gov.et/)
+- 🇬🇭 [Ghana](https://www.meteo.gov.gh/)
+- 🇲🇼 [Malawi](https://www.metmalawi.gov.mw/)
+- 🇲🇱 [Mali](https://www.malimeteo.ml/)
+- 🇳🇪 [Niger](https://www.niger-meteo.ne/)
+- 🇸🇨 [Seychelles](https://www.meteo.sc/)
+- 🇸🇸 [South Sudan](https://meteosouthsudan.com.ss/)
+- 🇸🇩 [Sudan](https://meteosudan.sd/)
+- 🇹🇬 [Togo](https://www.anamet-togo.com/)
+- 🇿🇼 [Zimbabwe](https://www.weatherzw.org.zw/)
+- And many more to go live soon.
+
+
 ## 🌟 Core Features
 
 - 🙂 User friendly website Content Management System

climweb/src/climweb/base/exceptions.py

@@ -0,0 +1,14 @@
+class InstanceTypeAlreadyRegistered(Exception):
+    """
+    Raised when the instance model instance is already registered in the registry.
+    """
+
+
+class InstanceTypeDoesNotExist(Exception):
+    """
+    Raised when a requested instance model instance isn't registered in the registry.
+    """
+
+    def __init__(self, type_name, *args, **kwargs):
+        self.type_name = type_name
+        super().__init__(*args, **kwargs)

climweb/src/climweb/base/registry.py

@@ -1,5 +1,7 @@
 from django.core.exceptions import ImproperlyConfigured
 
+from .exceptions import InstanceTypeDoesNotExist, InstanceTypeAlreadyRegistered
+
 
 class Instance(object):
     """
@@ -27,6 +29,13 @@ def before_unregister(self):
 
 class Registry(Instance):
     name = None
+    """The unique name that is used when raising exceptions."""
+
+    does_not_exist_exception_class = InstanceTypeDoesNotExist
+    """The exception that is raised when an instance doesn't exist."""
+
+    already_registered_exception_class = InstanceTypeAlreadyRegistered
+    """The exception that is raised when an instance is already registered."""
 
     def __init__(self):
         if not getattr(self, "name", None):