Uaktualnienie django-south.

[wolnelektury.git] / apps / south / db / sqlite3.py

diff --git a/apps/south/db/sqlite3.py b/apps/south/db/sqlite3.py
index 6073b4d..1fac1b8 100644 (file)
--- a/apps/south/db/sqlite3.py
+++ b/apps/south/db/sqlite3.py
@@ -8,5 +8,35 @@ class DatabaseOperations(generic.DatabaseOperations):
     SQLite3 implementation of database operations.
     """
 
-    def __init__(self):
-        raise NotImplementedError("Support for SQLite3 is not yet complete.")
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+    # SQLite ignores foreign key constraints. I wish I could.
+    supports_foreign_keys = False
+    
+    # You can't add UNIQUE columns with an ALTER TABLE.
+    def add_column(self, table_name, name, field, *args, **kwds):
+        # Run ALTER TABLE with no unique column
+        unique, field._unique, field.db_index = field.unique, False, False
+        generic.DatabaseOperations.add_column(self, table_name, name, field, *args, **kwds)
+        # If it _was_ unique, make an index on it.
+        if unique:
+            self.create_index(table_name, [name], unique=True)
+    
+    # SQLite doesn't have ALTER COLUMN
+    def alter_column(self, table_name, name, field, explicit_name=True):
+        """
+        Not supported under SQLite.
+        """
+        raise NotImplementedError("SQLite does not support altering columns.")
+    
+    # Nor DROP COLUMN
+    def delete_column(self, table_name, name, field):
+        """
+        Not supported under SQLite.
+        """
+        raise NotImplementedError("SQLite does not support deleting columns.")
+    
+    # Nor RENAME COLUMN
+    def rename_column(self, table_name, old, new):
+        """
+        Not supported under SQLite.
+        """
+        raise NotImplementedError("SQLite does not support renaming columns.")
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