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Code Issues 32 Releases Wiki Activity

boulder-oracle-sprint: Reverted constraint name construction to that used in the trunk.

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Made the mysql backend return None for get_max_name_length() for backwards compatibility.

git-svn-id: http://code.djangoproject.com/svn/django/branches/boulder-oracle-sprint@5423 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Boulder Sprinters 2007-06-04 21:10:33 +00:00
parent fe8c54a62a
commit 61aaccf46d
2 changed files with 8 additions and 7 deletions
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7
django/core/management.py
View File

@ -250,7 +250,9 @@ def _get_sql_for_pending_references(model, pending_references):
r_col = f.column r_col = f.column
table = opts.db_table table = opts.db_table
col = opts.get_field(f.rel.field_name).column col = opts.get_field(f.rel.field_name).column
r_name = '%s_refs_%s_%s_%s' % (r_col, col, r_table, table) # For MySQL, r_name must be unique in the first 64 characters.
# So we are careful with character usage here.
r_name = '%s_refs_%s_%x' % (r_col, col, abs(hash((r_table, table))))
final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)%s;' % \ final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)%s;' % \
(backend.quote_name(r_table), truncate_name(r_name, backend.get_max_name_length()), (backend.quote_name(r_table), truncate_name(r_name, backend.get_max_name_length()),
backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col), backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col),
@ -364,7 +366,7 @@ def get_sql_delete(app):
col = f.column col = f.column
r_table = model._meta.db_table r_table = model._meta.db_table
r_col = model._meta.get_field(f.rel.field_name).column r_col = model._meta.get_field(f.rel.field_name).column
r_name = '%s_refs_%s_%s_%s' % (col, r_col, table, r_table) r_name = '%s_refs_%s_%x' % (col, r_col, abs(hash(table, r_table)))
output.append('%s %s %s %s;' % \ output.append('%s %s %s %s;' % \
(style.SQL_KEYWORD('ALTER TABLE'), (style.SQL_KEYWORD('ALTER TABLE'),
style.SQL_TABLE(backend.quote_name(table)), style.SQL_TABLE(backend.quote_name(table)),
@ -479,7 +481,6 @@ get_sql_indexes.args = APP_ARGS
def get_sql_indexes_for_model(model): def get_sql_indexes_for_model(model):
"Returns the CREATE INDEX SQL statements for a single model" "Returns the CREATE INDEX SQL statements for a single model"
from django.db import backend from django.db import backend
from django.db.backends.util import truncate_name
output = [] output = []
for f in model._meta.fields: for f in model._meta.fields:

2
django/db/backends/mysql/base.py
View File

@ -199,7 +199,7 @@ def get_pk_default_value():
return "DEFAULT" return "DEFAULT"
def get_max_name_length(): def get_max_name_length():
return 64; return None;
def get_start_transaction_sql(): def get_start_transaction_sql():
return "BEGIN;" return "BEGIN;"