diff --git a/django/core/management.py b/django/core/management.py index 561c6bc84db..75142c6eb17 100644 --- a/django/core/management.py +++ b/django/core/management.py @@ -95,44 +95,39 @@ def get_sql_create(app): sys.exit(1) # Get installed models, so we generate REFERENCES right - installed_models = _get_installed_models(_get_table_list()) - final_output = [] - models_output = set(installed_models) + known_models = set(_get_installed_models(_get_table_list())) pending_references = {} app_models = models.get_models(app) - for klass in app_models: - output, references = _get_sql_model_create(klass, models_output) + for model in app_models: + output, references = _get_sql_model_create(model, known_models) final_output.extend(output) for refto, refs in references.items(): - try: - pending_references[refto].extend(refs) - except KeyError: - pending_references[refto] = refs - final_output.extend(_get_sql_for_pending_references(klass, pending_references)) + pending_references.set_default(refto,[]).extend(refs) + final_output.extend(_get_sql_for_pending_references(model, pending_references)) # Keep track of the fact that we've created the table for this model. - models_output.add(klass) + known_models.add(model) # Create the many-to-many join tables. - for klass in app_models: - final_output.extend(_get_many_to_many_sql_for_model(klass)) + for model in app_models: + final_output.extend(_get_many_to_many_sql_for_model(model)) # Handle references to tables that are from other apps # but don't exist physically not_installed_models = set(pending_references.keys()) if not_installed_models: final_output.append('-- The following references should be added but depend on non-existant tables:') - for klass in not_installed_models: + for model in not_installed_models: final_output.extend(['-- ' + sql for sql in - _get_sql_for_pending_references(klass, pending_references)]) + _get_sql_for_pending_references(model, pending_references)]) return final_output get_sql_create.help_doc = "Prints the CREATE TABLE SQL statements for the given app name(s)." get_sql_create.args = APP_ARGS -def _get_sql_model_create(klass, models_already_seen=set()): +def _get_sql_model_create(model, known_models=set()): """ Get the SQL required to create a single model. @@ -141,7 +136,7 @@ def _get_sql_model_create(klass, models_already_seen=set()): from django.db import backend, get_creation_module, models data_types = get_creation_module().DATA_TYPES - opts = klass._meta + opts = model._meta final_output = [] table_output = [] pending_references = {} @@ -163,7 +158,7 @@ def _get_sql_model_create(klass, models_already_seen=set()): if f.primary_key: field_output.append(style.SQL_KEYWORD('PRIMARY KEY')) if f.rel: - if f.rel.to in models_already_seen: + if f.rel.to in known_models: field_output.append(style.SQL_KEYWORD('REFERENCES') + ' ' + \ style.SQL_TABLE(backend.quote_name(f.rel.to._meta.db_table)) + ' (' + \ style.SQL_FIELD(backend.quote_name(f.rel.to._meta.get_field(f.rel.field_name).column)) + ')' @@ -171,7 +166,7 @@ def _get_sql_model_create(klass, models_already_seen=set()): else: # We haven't yet created the table to which this field # is related, so save it for later. - pr = pending_references.setdefault(f.rel.to, []).append((klass, f)) + pr = pending_references.setdefault(f.rel.to, []).append((model, f)) table_output.append(' '.join(field_output)) if opts.order_with_respect_to: table_output.append(style.SQL_FIELD(backend.quote_name('_order')) + ' ' + \ @@ -189,7 +184,7 @@ def _get_sql_model_create(klass, models_already_seen=set()): return final_output, pending_references -def _get_sql_for_pending_references(klass, pending_references): +def _get_sql_for_pending_references(model, pending_references): """ Get any ALTER TABLE statements to add constraints after the fact. """ @@ -199,9 +194,9 @@ def _get_sql_for_pending_references(klass, pending_references): final_output = [] reference_names = {} if backend.supports_constraints: - opts = klass._meta - if klass in pending_references: - for rel_class, f in pending_references[klass]: + opts = model._meta + if model in pending_references: + for rel_class, f in pending_references[model]: rel_opts = rel_class._meta r_table = rel_opts.db_table r_col = f.column @@ -216,16 +211,16 @@ def _get_sql_for_pending_references(klass, pending_references): final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s);' % \ (backend.quote_name(r_table), r_name, backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col))) - del pending_references[klass] + del pending_references[model] return final_output -def _get_many_to_many_sql_for_model(klass): +def _get_many_to_many_sql_for_model(model): from django.db import backend, get_creation_module from django.db.models import GenericRel data_types = get_creation_module().DATA_TYPES - opts = klass._meta + opts = model._meta final_output = [] for f in opts.many_to_many: if not isinstance(f.rel, GenericRel): @@ -279,37 +274,37 @@ def get_sql_delete(app): references_to_delete = {} app_models = models.get_models(app) - for klass in app_models: - if cursor and klass._meta.db_table in table_names: + for model in app_models: + if cursor and model._meta.db_table in table_names: # The table exists, so it needs to be dropped - opts = klass._meta + opts = model._meta for f in opts.fields: if f.rel and f.rel.to not in to_delete: - references_to_delete.setdefault(f.rel.to, []).append( (klass, f) ) + references_to_delete.setdefault(f.rel.to, []).append( (model, f) ) - to_delete.add(klass) + to_delete.add(model) - for klass in app_models: - if cursor and klass._meta.db_table in table_names: + for model in app_models: + if cursor and model._meta.db_table in table_names: # Drop the table now output.append('%s %s;' % (style.SQL_KEYWORD('DROP TABLE'), - style.SQL_TABLE(backend.quote_name(klass._meta.db_table)))) - if backend.supports_constraints and references_to_delete.has_key(klass): - for rel_class, f in references_to_delete[klass]: + style.SQL_TABLE(backend.quote_name(model._meta.db_table)))) + if backend.supports_constraints and references_to_delete.has_key(model): + for rel_class, f in references_to_delete[model]: table = rel_class._meta.db_table col = f.column - r_table = klass._meta.db_table - r_col = klass._meta.get_field(f.rel.field_name).column + r_table = model._meta.db_table + r_col = model._meta.get_field(f.rel.field_name).column output.append('%s %s %s %s;' % \ (style.SQL_KEYWORD('ALTER TABLE'), style.SQL_TABLE(backend.quote_name(table)), style.SQL_KEYWORD(backend.get_drop_foreignkey_sql()), style.SQL_FIELD(backend.quote_name("%s_referencing_%s_%s" % (col, r_table, r_col))))) - del references_to_delete[klass] + del references_to_delete[model] # Output DROP TABLE statements for many-to-many tables. - for klass in app_models: - opts = klass._meta + for model in app_models: + opts = model._meta for f in opts.many_to_many: if cursor and f.m2m_db_table() in table_names: output.append("%s %s;" % (style.SQL_KEYWORD('DROP TABLE'), @@ -366,8 +361,8 @@ def get_sql_initial_data(app): app_models = get_models(app) app_dir = os.path.normpath(os.path.join(os.path.dirname(app.__file__), 'sql')) - for klass in app_models: - output.extend(get_sql_initial_data_for_model(klass)) + for model in app_models: + output.extend(get_sql_initial_data_for_model(model)) return output get_sql_initial_data.help_doc = "Prints the initial INSERT SQL statements for the given app name(s)." @@ -377,18 +372,18 @@ def get_sql_sequence_reset(app): "Returns a list of the SQL statements to reset PostgreSQL sequences for the given app." from django.db import backend, models output = [] - for klass in models.get_models(app): - for f in klass._meta.fields: + for model in models.get_models(app): + for f in model._meta.fields: if isinstance(f, models.AutoField): output.append("%s setval('%s', (%s max(%s) %s %s));" % \ (style.SQL_KEYWORD('SELECT'), - style.SQL_FIELD('%s_%s_seq' % (klass._meta.db_table, f.column)), + style.SQL_FIELD('%s_%s_seq' % (model._meta.db_table, f.column)), style.SQL_KEYWORD('SELECT'), style.SQL_FIELD(backend.quote_name(f.column)), style.SQL_KEYWORD('FROM'), - style.SQL_TABLE(backend.quote_name(klass._meta.db_table)))) + style.SQL_TABLE(backend.quote_name(model._meta.db_table)))) break # Only one AutoField is allowed per model, so don't bother continuing. - for f in klass._meta.many_to_many: + for f in model._meta.many_to_many: output.append("%s setval('%s', (%s max(%s) %s %s));" % \ (style.SQL_KEYWORD('SELECT'), style.SQL_FIELD('%s_id_seq' % f.m2m_db_table()), @@ -405,15 +400,15 @@ def get_sql_indexes(app): from django.db import backend, models output = [] - for klass in models.get_models(app): - for f in klass._meta.fields: + for model in models.get_models(app): + for f in model._meta.fields: if f.db_index: unique = f.unique and 'UNIQUE ' or '' output.append( style.SQL_KEYWORD('CREATE %sINDEX' % unique) + ' ' + \ - style.SQL_TABLE('%s_%s' % (klass._meta.db_table, f.column)) + ' ' + \ + style.SQL_TABLE('%s_%s' % (model._meta.db_table, f.column)) + ' ' + \ style.SQL_KEYWORD('ON') + ' ' + \ - style.SQL_TABLE(backend.quote_name(klass._meta.db_table)) + ' ' + \ + style.SQL_TABLE(backend.quote_name(model._meta.db_table)) + ' ' + \ "(%s);" % style.SQL_FIELD(backend.quote_name(f.column)) ) return output @@ -523,14 +518,14 @@ def get_admin_index(app): app_label = app_models[0]._meta.app_label output.append('{%% if perms.%s %%}' % app_label) output.append('

%s

' % app_label.title()) - for klass in app_models: - if klass._meta.admin: + for model in app_models: + if model._meta.admin: output.append(MODULE_TEMPLATE % { 'app': app_label, - 'mod': klass._meta.module_name, - 'name': capfirst(klass._meta.verbose_name_plural), - 'addperm': klass._meta.get_add_permission(), - 'changeperm': klass._meta.get_change_permission(), + 'mod': model._meta.module_name, + 'name': capfirst(model._meta.verbose_name_plural), + 'addperm': model._meta.get_add_permission(), + 'changeperm': model._meta.get_change_permission(), }) output.append('
') output.append('{% endif %}')