diff options
| -rw-r--r-- | django/core/management.py | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/django/core/management.py b/django/core/management.py index cc0c749dbe..561c6bc84d 100644 --- a/django/core/management.py +++ b/django/core/management.py @@ -197,6 +197,7 @@ def _get_sql_for_pending_references(klass, pending_references): data_types = get_creation_module().DATA_TYPES final_output = [] + reference_names = {} if backend.supports_constraints: opts = klass._meta if klass in pending_references: @@ -206,9 +207,14 @@ def _get_sql_for_pending_references(klass, pending_references): r_col = f.column table = opts.db_table col = opts.get_field(f.rel.field_name).column + r_name = '%s_referencing_%s_%s' % (r_col, table, col) + if r_name in reference_names: + reference_names[r_name] += 1 + r_name += '_%s' % reference_names[r_name] + else: + reference_names[r_name] = 0 final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s);' % \ - (backend.quote_name(r_table), - backend.quote_name('%s_referencing_%s_%s' % (r_col, table, col)), + (backend.quote_name(r_table), r_name, backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col))) del pending_references[klass] return final_output |