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d7429defe6
Change patch from https://code.djangoproject.com/ticket/5568 to work on modern Django. Add special case for MySQL which has different syntax for DROP INDEX. Add unit tests for the new functionality.
70 lines
3.0 KiB
Python
70 lines
3.0 KiB
Python
from django.db.backends.creation import BaseDatabaseCreation
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class DatabaseCreation(BaseDatabaseCreation):
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# This dictionary maps Field objects to their associated MySQL column
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# types, as strings. Column-type strings can contain format strings; they'll
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# be interpolated against the values of Field.__dict__ before being output.
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# If a column type is set to None, it won't be included in the output.
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data_types = {
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'AutoField': 'integer AUTO_INCREMENT',
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'BooleanField': 'bool',
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'CharField': 'varchar(%(max_length)s)',
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'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
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'DateField': 'date',
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'DateTimeField': 'datetime',
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'DecimalField': 'numeric(%(max_digits)s, %(decimal_places)s)',
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'FileField': 'varchar(%(max_length)s)',
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'FilePathField': 'varchar(%(max_length)s)',
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'FloatField': 'double precision',
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'IntegerField': 'integer',
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'BigIntegerField': 'bigint',
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'IPAddressField': 'char(15)',
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'GenericIPAddressField': 'char(39)',
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'NullBooleanField': 'bool',
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'OneToOneField': 'integer',
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'PositiveIntegerField': 'integer UNSIGNED',
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'PositiveSmallIntegerField': 'smallint UNSIGNED',
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'SlugField': 'varchar(%(max_length)s)',
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'SmallIntegerField': 'smallint',
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'TextField': 'longtext',
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'TimeField': 'time',
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}
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def sql_table_creation_suffix(self):
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suffix = []
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if self.connection.settings_dict['TEST_CHARSET']:
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suffix.append('CHARACTER SET %s' % self.connection.settings_dict['TEST_CHARSET'])
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if self.connection.settings_dict['TEST_COLLATION']:
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suffix.append('COLLATE %s' % self.connection.settings_dict['TEST_COLLATION'])
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return ' '.join(suffix)
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def sql_for_inline_foreign_key_references(self, model, field, known_models, style):
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"All inline references are pending under MySQL"
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return [], True
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def sql_destroy_indexes_for_fields(self, model, fields, style):
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if len(fields) == 1 and fields[0].db_tablespace:
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tablespace_sql = self.connection.ops.tablespace_sql(fields[0].db_tablespace)
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elif model._meta.db_tablespace:
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tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
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else:
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tablespace_sql = ""
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if tablespace_sql:
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tablespace_sql = " " + tablespace_sql
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field_names = []
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qn = self.connection.ops.quote_name
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for f in fields:
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field_names.append(style.SQL_FIELD(qn(f.column)))
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index_name = "%s_%s" % (model._meta.db_table, self._digest([f.name for f in fields]))
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from ..util import truncate_name
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return [
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style.SQL_KEYWORD("DROP INDEX") + " " +
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style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + " " +
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style.SQL_KEYWORD("ON") + " " +
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style.SQL_TABLE(qn(model._meta.db_table)) + ";",
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]
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