Introduce primary keys and remove managed = False from models

(Assuming we want to manage these tables using django in future)

app/models.py

@@ -17,43 +17,41 @@ class AlembicVersion(models.Model):
 
 
 class Field(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     name = models.CharField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'field'
 
 
 class FieldsPeople(models.Model):
+    id = models.AutoField(primary_key=True)
     person = models.ForeignKey('Person', models.DO_NOTHING, blank=True, null=True)
     field = models.ForeignKey(Field, models.DO_NOTHING, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'fields_people'
 
 
 class Method(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     name = models.CharField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'method'
 
 
 class MethodsPeople(models.Model):
+    id = models.AutoField(primary_key=True)
     person = models.ForeignKey('Person', models.DO_NOTHING, blank=True, null=True)
     method = models.ForeignKey(Method, models.DO_NOTHING, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'methods_people'
 
 
 class Person(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     source_id = models.IntegerField(blank=True, null=True)
     title = models.CharField(blank=True, null=True)
     first_name = models.CharField(blank=True, null=True)
@@ -67,33 +65,31 @@ class Person(models.Model):
     field_indexer = models.TextField(db_column='_indexer', blank=True, null=True)  # Field renamed because it started with '_'.
 
     class Meta:
-        managed = False
         db_table = 'person'
 
 
 class Range(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     source_id = models.IntegerField(blank=True, null=True)
     gmba_id = models.CharField(blank=True, null=True)
     name = models.CharField(blank=True, null=True)
     countries = models.CharField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'range'
 
 
 class RangesPeople(models.Model):
+    id = models.AutoField(primary_key=True)
     person = models.ForeignKey(Person, models.DO_NOTHING, blank=True, null=True)
     range = models.ForeignKey(Range, models.DO_NOTHING, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'ranges_people'
 
 
 class Resource(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     source_id = models.IntegerField(blank=True, null=True)
     title = models.CharField(blank=True, null=True)
     url = models.CharField(blank=True, null=True)
@@ -101,50 +97,47 @@ class Resource(models.Model):
     abstract = models.TextField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'resource'
 
 
 class ResourcesPeople(models.Model):
+    id = models.AutoField(primary_key=True)
     person = models.ForeignKey(Person, models.DO_NOTHING, blank=True, null=True)
     resource = models.ForeignKey(Resource, models.DO_NOTHING, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'resources_people'
 
 
 class Scale(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     name = models.CharField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'scale'
 
 
 class ScalesPeople(models.Model):
+    id = models.AutoField(primary_key=True)
     person = models.ForeignKey(Person, models.DO_NOTHING, blank=True, null=True)
     scale = models.ForeignKey(Scale, models.DO_NOTHING, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'scales_people'
 
 
 class TaxaPeople(models.Model):
+    id = models.AutoField(primary_key=True)
     person = models.ForeignKey(Person, models.DO_NOTHING, blank=True, null=True)
     taxon = models.ForeignKey('Taxon', models.DO_NOTHING, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'taxa_people'
 
 
 class Taxon(models.Model):
-    id = models.AutoField()
+    id = models.AutoField(primary_key=True)
     name = models.CharField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'taxon'