#27794: Fix confusing error messages for broken `context_processors`
-------------------------------------+-------------------------------------
Reporter: Elena | Owner: (none)
Williams |
Type: | Status: new
Uncategorized |
Component: Error | Version: 1.10
reporting | Keywords: errors,
Severity: Normal | context_processors
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
If there is something broken about one or many items in
`context_processors` produces the error message:
{{{
No module named context_processors
}}}
A better error message would say that an item was broken, not that the
module doesn't exist (it usually does exist).
Preferably mention which item is broken.
This is confusing when either `TEMPLATES['OPTIONS']['context_processors']`
or `TEMPLATE_CONTEXT_PROCESSORS` ''do'' exist. Particularly when upgrading
or when the `context_processors` list is quite long.
Can be trivially replicated by starting a new project and adding any
syntactically correct, but otherwise broken entry to `context_processors`
list, for example:
{{{
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'broken.context_processors',
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
}}}
Examples of this having confused users is discussed:
http://stackoverflow.com/questions/32828536/django-no-module-named-
context-processors-error-after-reboot
http://stackoverflow.com/questions/38772498/importerror-no-module-named-
context-processors
--
Ticket URL: <https://code.djangoproject.com/ticket/27794>
Django <https://code.djangoproject.com/>
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