Question

I have a Django app which when presented with some user error (i.e URL does not exist or no permissions), it will do messages.add_message. The message contains a link to an explanation of the error at /error/<id>. If I want to re-use the error id and message, how do I do it? I was thinking something like this:

errors = {1 : "Error message for error id 1", 2 : "Error message for error id 2"}

Where could I store such a dictionary so that I can access it in all of my views?

Answer 1

You should create a view that maps to a url like /error/<id>. Then inside the view have the dictionary errors = {1 : "Error message for error id 1", 2 : "Error message for error id 2"} or alternatively inside a file called error_codes.py and import it into your views.py . Then simply parse the <id> passed in the url and return a template with the correct error code.

To ensure that this dictionary of error codes is available across all your requests, use write custom Django Middleware. Implement process_template_response(self, request, response) and alter the response.context_data by adding your error_code_dictionary to it. Will ensure that every response has the error dictionary available across your http responses rendered in templates and elsewhere.