Ticket #9253: hexdigest.patch

django/db/backends/creation.py

@@ -1 +1 @@
 import sys
 import time
+from django.utils.hashcompat import md5_constructor
 try:
     set
 except NameError:
@@ -128 +129 @@
                 col = opts.get_field(f.rel.field_name).column
                 # 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))))
+                r_name = '%s_refs_%s_%s' % (r_col, col, md5_constructor(r_table + table).hexdigest()[:8])
                 final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)%s;' % \
                     (qn(r_table), qn(truncate_name(r_name, self.connection.ops.max_name_length())),
                     qn(r_col), qn(table), qn(col),
@@ -187 +188 @@
             output.append('\n'.join(table_output))
 
             for r_table, r_col, table, col in deferred:
-                r_name = '%s_refs_%s_%x' % (r_col, col,
-                        abs(hash((r_table, table))))
+                r_name = '%s_refs_%s_%s' % (r_col, col,
+                        md5_constructor(r_table + table).hexdigest()[:8])
                 output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)%s;' %
                 (qn(r_table),
                 qn(truncate_name(r_name, self.connection.ops.max_name_length())),