Remove CaveSLug as a Class. Now each Cave has only one slug for sure.

core/TESTS/test_imports.py

@@ -72,7 +72,7 @@ class SimpleTest(SimpleTestCase):
         from django.utils.timezone import get_current_timezone, make_aware
 
         from parsers.people import GetPersonExpeditionNameLookup
-        from troggle.core.models.logbooks import CaveSlug, QM, LogbookEntry, PersonLogEntry
+        from troggle.core.models.logbooks import QM, LogbookEntry, PersonLogEntry
         from troggle.core.models.troggle import DataIssue, Expedition
 
     def test_import_core_views_caves(self):

core/admin.py

@@ -3,7 +3,7 @@ from django.core import serializers
 from django.http import HttpResponse
 
 from troggle.core.models.caves import Cave, CaveAndEntrance, Entrance
-from troggle.core.models.logbooks import QM, LogbookEntry, PersonLogEntry, CaveSlug
+from troggle.core.models.logbooks import QM, LogbookEntry, PersonLogEntry
 from troggle.core.models.survex import (
     DrawingFile,
     SingleScan,
@@ -138,7 +138,6 @@ admin.site.register(Cave, CaveAdmin)
 #admin.site.register(Area)
 admin.site.register(CaveAndEntrance)
 admin.site.register(Entrance, EntranceAdmin)
-admin.site.register(CaveSlug)
 admin.site.register(SurvexBlock, SurvexBlockAdmin)
 admin.site.register(DrawingFile, DrawingFileAdmin)
 admin.site.register(Expedition)

core/models/caves.py

@@ -59,8 +59,6 @@ class CaveAndEntrance(models.Model):
     def __str__(self):
         return str(self.cave) + str(self.entranceletter)
         
-# class CaveSlug(models.Model):
-# moved to models/logbooks.py to avoid cyclic import problem. No I don't know why either.
 
 def get_cave_leniently(caveid):
     try:

core/models/logbooks.py

@@ -10,34 +10,19 @@ from django.template import loader
 import settings
 from troggle.core.models.troggle import Expedition, TroggleModel
 
+
 """The model declarations  LogBookEntry, PersonLogEntry, QM
 """
 
 todo = """
-- Can we rewrite things to eliminate the CaveSlug and objects? No
-  Surely foreign keys work fine ?! No
   
   Foreign keys do not allow for there being multiple ways to refer to a cave, eg 1623-1999-03 aka 1623-204
   Having slugs allows for much more loose coupling to caves, which removes alot of the need to reset the database, which interupts work flow.
   It also means we do not have to be creating temporary cave objects in the database, where we do not have the underlying file in cave_data.
 	
-  To Do move Cave Slug back to troggle.core.models
-	
 """
 
 
-class CaveSlug(models.Model):
-    """Moved here to avoid nasty cyclic import error
-    CASCADE means that if the Cave is deleted, this is too
-    """
-
-    cave = models.ForeignKey("Cave", on_delete=models.CASCADE)
-    slug = models.SlugField(max_length=50, unique=True)
-    primary = models.BooleanField(default=False)
-
-    def __str__(self):
-        return f"{self.slug}: {self.cave}"
-
 
 class LogbookEntry(TroggleModel):
     """Single parsed entry from Logbook
@@ -48,7 +33,7 @@ class LogbookEntry(TroggleModel):
     ) 
     expedition = models.ForeignKey(Expedition, blank=True, null=True, on_delete=models.CASCADE)  
     title = models.CharField(max_length=200)
-    cave_slug = models.SlugField(max_length=50, blank=True, null=True)
+    cave = models.ForeignKey("Cave", blank=True, null=True, on_delete=models.SET_NULL)
     place = models.CharField(
         max_length=100, blank=True, null=True, help_text="Only use this if you haven't chosen a cave"
     )
@@ -62,10 +47,6 @@ class LogbookEntry(TroggleModel):
         # several PersonLogEntrys point in to this object
         ordering = ("-date",)
 
-    def cave(self):  # Why didn't he just make this a foreign key to Cave ?
-        c = CaveSlug.objects.get(slug=self.cave_slug, primary=True).cave
-        return c
-
     def isLogbookEntry(self):  # Function used in templates
         return True
 

core/views/caves.py

@@ -16,7 +16,7 @@ from django.urls import NoReverseMatch, reverse
 import troggle.settings as settings
 from troggle.core.forms import CaveAndEntranceFormSet, CaveForm, EntranceForm, EntranceLetterForm
 from troggle.core.models.caves import Cave, CaveAndEntrance, Entrance, GetCaveLookup, get_cave_leniently
-from troggle.core.models.logbooks import CaveSlug, QM
+from troggle.core.models.logbooks import QM
 from troggle.core.models.wallets import Wallet
 from troggle.core.utils import write_and_commit
 from troggle.core.utils import current_expo
@@ -51,9 +51,9 @@ todo = """
     # """
     # return redirect("/caves")
     
+
 def get_cave_from_slug(caveslug):
-    """This is the old way of doing it, usingt eh CaveSlug intermediate object which does 
+    """Needs refactoring
-    the many:many relationship between slugs and caves - whcih we don't do (and never did in practice)
     """
     caves = []
     
@@ -74,10 +74,14 @@ def get_cave_from_slug(caveslug):
     
     if len(caves) > 1:
         print(f"get_cave_from_slug(): {caveslug} More than 1 \n{caves}")
+        return None
     if len(caves) <1:
          print(f"get_cave_from_slug(): {caveslug} Nowt found..")
+         return None
     cave = caves[0]
     print(f"get_cave_from_slug(): {caveslug} FOUND {cave}")
+    return cave
+    
     
     try:
         cave_zero = Cave.objects.get(caveslug__slug=caveslug)

core/views/uploads.py

@@ -69,7 +69,7 @@ def store_edited_entry_into_database(date, place, title, text, others, author, t
     year = slug[0:4]
     expedition = Expedition.objects.get(year=year)
     cave = GetCaveLookup().get(place.lower())
-    # print(f"{place} {cave=}")
+    # print(f"store_edited_entry_into_database(): {place=} {cave=}")
     
     if LogbookEntry.objects.filter(slug=slug).exists():
         # oops.
@@ -82,7 +82,7 @@ def store_edited_entry_into_database(date, place, title, text, others, author, t
         "text": text,
         "expedition": expedition,
         "time_underground": tu,
-        "cave_slug": str(cave),
+        "cave": cave,
         "title": f"{place} - {title}",
         # "other_people": others
     }

parsers/caves.py

@@ -9,7 +9,6 @@ from django.conf import settings
 from django.db import transaction
 
 from troggle.core.models.caves import Cave, CaveAndEntrance, Entrance, GetCaveLookup  
-from troggle.core.models.logbooks import CaveSlug
 from troggle.core.models.survex import SurvexStation  
 from troggle.core.models.troggle import DataIssue
 from troggle.settings import CAVEDESCRIPTIONS, ENTRANCEDESCRIPTIONS, EXPOWEB, SURVEX_DATA
@@ -235,12 +234,6 @@ def do_ARGE_cave(slug, caveid, areacode, svxid):
    
         cave.save() 
 
-        try:  # Now create a cave slug ID
-            CaveSlug.objects.update_or_create(cave=cave, slug=slug, primary=False)
-        except:
-            message = f" ! {slug:11s}  ARGE CaveSLUG create failure {caveid=} {url=} {areacode=} {svxid=}"
-            DataIssue.objects.create(parser="caves", message=message)
-            print(message)
     else:
         message = f" ! {slug:11s}  ARGE cave create failure {caveid=} {url=} {areacode=} {svxid=}"
         DataIssue.objects.create(parser="caves", message=message)
@@ -368,12 +361,6 @@ def do_pending_cave(slug, caveid, url, areacode, msg=None):
             DataIssue.objects.create(parser="caves", message=message, url=url)
             print(message)
 
-            try:  # Now create a cave slug ID
-                CaveSlug.objects.update_or_create(cave=cave, slug=slug, primary=False)
-            except:
-                message = f" ! {slug:11s}  PENDING CaveSLUG {slug} create failure - {msg}"
-                DataIssue.objects.create(parser="caves", message=message)
-                print(message)
         else:
             message = f" ! {slug:11s}  PENDING cave create failure - {msg}"
             DataIssue.objects.create(parser="caves", message=message)
@@ -609,7 +596,7 @@ def make_cave(slug):
 
     except:
         print(f" ! FAILED to get only one CAVE in db when updating using: {filename} or not found.")
-        kaves = Cave.objects.all().filter(filename=filename) # replace with slug when CaveSlug tidied up
+        kaves = Cave.objects.all().filter(filename=filename) # assumes filename unique, eeugh.
         for k in kaves:
             message = " ! - DUPLICATES in db. kataster:" + str(k.kataster_number) + ", slug:" + str(k.slug())
             DataIssue.objects.create(parser="caves", message=message, url=context)
@@ -723,22 +710,7 @@ def read_cave(filename, mvf=None, cave=None):
          Pending destruction of this whole concept and Class CaveSlug
          What is Class CaveSlug for?
          """
-        #return
+        return
-        primary = True # this sets the first thing we find to be primary=True and all the others =False
-        for slug in slugs:
-            if slug in caves_xslug:
-                cs = caves_xslug[slug]
-            else:
-               try:  
-                    cs = CaveSlug.objects.update_or_create(cave=cave, slug=slug, primary=primary)
-                    caves_xslug[slug] = cs
-               except Exception as ex:
-                    #raise
-                    # This fails to do an update! It just crashes.. to be fixed
-                    message = f" ! CaveSlug update/create failure : {slug}, skipping cave_data file {slug} with exception\nException: {ex.__class__}"
-                    DataIssue.objects.create(parser="caves", message=message, url=context)
-                    print(message)
-               primary = False
             
     def check_directory(areacode, caveid, url, cave):
         dir = Path(settings.EXPOWEB, areacode, caveid)

parsers/logbooks.py

@@ -269,7 +269,7 @@ def store_entry_into_database(date, place, tripcave, title, text, trippersons, a
         "text": text,
         "expedition": expedition,
         "time_underground": logtime_underground,
-        "cave_slug": str(tripcave),
+        "cave": tripcave,
     }
     coUniqueAttribs = {"slug": tid, "date": date, "title": title}
     if LogbookEntry.objects.filter(slug=tid).exists():