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1 from optparse import make_option |
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2 import sys |
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3 |
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4 from django.conf import settings |
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5 from django.core.management.base import NoArgsCommand |
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6 from django.core.management.color import no_style |
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7 from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal |
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8 from django.db import connections, router, transaction, models, DEFAULT_DB_ALIAS |
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9 from django.utils.datastructures import SortedDict |
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10 from django.utils.importlib import import_module |
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11 |
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12 |
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13 class Command(NoArgsCommand): |
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14 option_list = NoArgsCommand.option_list + ( |
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15 make_option('--noinput', action='store_false', dest='interactive', default=True, |
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16 help='Tells Django to NOT prompt the user for input of any kind.'), |
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17 make_option('--database', action='store', dest='database', |
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18 default=DEFAULT_DB_ALIAS, help='Nominates a database to synchronize. ' |
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19 'Defaults to the "default" database.'), |
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20 ) |
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21 help = "Create the database tables for all apps in INSTALLED_APPS whose tables haven't already been created." |
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22 |
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23 def handle_noargs(self, **options): |
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24 |
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25 verbosity = int(options.get('verbosity', 1)) |
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26 interactive = options.get('interactive') |
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27 show_traceback = options.get('traceback', False) |
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28 |
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29 self.style = no_style() |
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30 |
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31 # Import the 'management' module within each installed app, to register |
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32 # dispatcher events. |
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33 for app_name in settings.INSTALLED_APPS: |
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34 try: |
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35 import_module('.management', app_name) |
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36 except ImportError, exc: |
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37 # This is slightly hackish. We want to ignore ImportErrors |
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38 # if the "management" module itself is missing -- but we don't |
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39 # want to ignore the exception if the management module exists |
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40 # but raises an ImportError for some reason. The only way we |
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41 # can do this is to check the text of the exception. Note that |
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42 # we're a bit broad in how we check the text, because different |
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43 # Python implementations may not use the same text. |
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44 # CPython uses the text "No module named management" |
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45 # PyPy uses "No module named myproject.myapp.management" |
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46 msg = exc.args[0] |
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47 if not msg.startswith('No module named') or 'management' not in msg: |
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48 raise |
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49 |
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50 db = options.get('database', DEFAULT_DB_ALIAS) |
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51 connection = connections[db] |
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52 cursor = connection.cursor() |
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53 |
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54 # Get a list of already installed *models* so that references work right. |
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55 tables = connection.introspection.table_names() |
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56 seen_models = connection.introspection.installed_models(tables) |
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57 created_models = set() |
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58 pending_references = {} |
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59 |
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60 # Build the manifest of apps and models that are to be synchronized |
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61 all_models = [ |
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62 (app.__name__.split('.')[-2], |
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63 [m for m in models.get_models(app, include_auto_created=True) |
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64 if router.allow_syncdb(db, m)]) |
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65 for app in models.get_apps() |
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66 ] |
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67 def model_installed(model): |
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68 opts = model._meta |
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69 converter = connection.introspection.table_name_converter |
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70 return not ((converter(opts.db_table) in tables) or |
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71 (opts.auto_created and converter(opts.auto_created._meta.db_table) in tables)) |
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72 |
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73 manifest = SortedDict( |
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74 (app_name, filter(model_installed, model_list)) |
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75 for app_name, model_list in all_models |
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76 ) |
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77 |
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78 # Create the tables for each model |
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79 for app_name, model_list in manifest.items(): |
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80 for model in model_list: |
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81 # Create the model's database table, if it doesn't already exist. |
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82 if verbosity >= 2: |
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83 print "Processing %s.%s model" % (app_name, model._meta.object_name) |
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84 sql, references = connection.creation.sql_create_model(model, self.style, seen_models) |
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85 seen_models.add(model) |
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86 created_models.add(model) |
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87 for refto, refs in references.items(): |
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88 pending_references.setdefault(refto, []).extend(refs) |
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89 if refto in seen_models: |
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90 sql.extend(connection.creation.sql_for_pending_references(refto, self.style, pending_references)) |
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91 sql.extend(connection.creation.sql_for_pending_references(model, self.style, pending_references)) |
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92 if verbosity >= 1 and sql: |
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93 print "Creating table %s" % model._meta.db_table |
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94 for statement in sql: |
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95 cursor.execute(statement) |
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96 tables.append(connection.introspection.table_name_converter(model._meta.db_table)) |
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97 |
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98 |
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99 transaction.commit_unless_managed(using=db) |
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100 |
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101 # Send the post_syncdb signal, so individual apps can do whatever they need |
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102 # to do at this point. |
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103 emit_post_sync_signal(created_models, verbosity, interactive, db) |
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104 |
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105 # The connection may have been closed by a syncdb handler. |
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106 cursor = connection.cursor() |
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107 |
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108 # Install custom SQL for the app (but only if this |
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109 # is a model we've just created) |
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110 for app_name, model_list in manifest.items(): |
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111 for model in model_list: |
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112 if model in created_models: |
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113 custom_sql = custom_sql_for_model(model, self.style, connection) |
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114 if custom_sql: |
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115 if verbosity >= 1: |
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116 print "Installing custom SQL for %s.%s model" % (app_name, model._meta.object_name) |
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117 try: |
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118 for sql in custom_sql: |
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119 cursor.execute(sql) |
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120 except Exception, e: |
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121 sys.stderr.write("Failed to install custom SQL for %s.%s model: %s\n" % \ |
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122 (app_name, model._meta.object_name, e)) |
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123 if show_traceback: |
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124 import traceback |
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125 traceback.print_exc() |
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126 transaction.rollback_unless_managed(using=db) |
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127 else: |
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128 transaction.commit_unless_managed(using=db) |
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129 else: |
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130 if verbosity >= 2: |
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131 print "No custom SQL for %s.%s model" % (app_name, model._meta.object_name) |
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132 |
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133 # Install SQL indicies for all newly created models |
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134 for app_name, model_list in manifest.items(): |
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135 for model in model_list: |
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136 if model in created_models: |
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137 index_sql = connection.creation.sql_indexes_for_model(model, self.style) |
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138 if index_sql: |
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139 if verbosity >= 1: |
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140 print "Installing index for %s.%s model" % (app_name, model._meta.object_name) |
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141 try: |
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142 for sql in index_sql: |
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143 cursor.execute(sql) |
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144 except Exception, e: |
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145 sys.stderr.write("Failed to install index for %s.%s model: %s\n" % \ |
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146 (app_name, model._meta.object_name, e)) |
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147 transaction.rollback_unless_managed(using=db) |
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148 else: |
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149 transaction.commit_unless_managed(using=db) |
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150 |
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151 from django.core.management import call_command |
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152 call_command('loaddata', 'initial_data', verbosity=verbosity, database=db) |