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Update schema reflection for postgres.

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Use the schema reflection query from 3.x to provide access to the serial
column attributes. These attributes give a more reliable way to access
primary key data than comparing the primary key of the model. The old
approach failed when schema was generated and concrete model's were
missing.

Refs #10356
This commit is contained in:
mark_story 2017-03-26 22:22:51 -04:00
parent e285df4f82
commit 0b6c23d04f
2 changed files with 39 additions and 20 deletions
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38
lib/Cake/Model/Datasource/Database/Postgres.php
View file

@ -198,14 +198,26 @@ class Postgres extends DboSource {
$fields = parent::describe($table);
$this->_sequenceMap[$table] = array();
$cols = null;
$hasPrimary = false;
if ($fields === null) {
$cols = $this->_execute(
"SELECT DISTINCT table_schema AS schema, column_name AS name, data_type AS type, is_nullable AS null,
column_default AS default, ordinal_position AS position, character_maximum_length AS char_length,
character_octet_length AS oct_length FROM information_schema.columns
WHERE table_name = ? AND table_schema = ? ORDER BY position",
array($table, $this->config['schema'])
'SELECT DISTINCT table_schema AS schema,
column_name AS name,
data_type AS type,
is_nullable AS null,
column_default AS default,
ordinal_position AS position,
character_maximum_length AS char_length,
character_octet_length AS oct_length,
pg_get_serial_sequence(attr.attrelid::regclass::text, attr.attname) IS NOT NULL AS has_serial
FROM information_schema.columns c
INNER JOIN pg_catalog.pg_namespace ns ON (ns.nspname = table_schema)
INNER JOIN pg_catalog.pg_class cl ON (cl.relnamespace = ns.oid AND cl.relname = table_name)
LEFT JOIN pg_catalog.pg_attribute attr ON (cl.oid = attr.attrelid AND column_name = attr.attname)
WHERE table_name = ? AND table_schema = ? AND table_catalog = ?
ORDER BY ordinal_position',
array($table, $this->config['schema'], $this->config['database'])
);
// @codingStandardsIgnoreStart
@ -238,10 +250,19 @@ class Postgres extends DboSource {
"$1",
preg_replace('/::.*/', '', $c->default)
),
'length' => $length
'length' => $length,
);
if ($model instanceof Model) {
if ($c->name === $model->primaryKey) {
// Serial columns are primary integer keys
if ($c->has_serial) {
$fields[$c->name]['key'] = 'primary';
$fields[$c->name]['length'] = 11;
$hasPrimary = true;
}
if ($hasPrimary === false &&
$model instanceof Model &&
$c->name === $model->primaryKey
) {
$fields[$c->name]['key'] = 'primary';
if (
$fields[$c->name]['type'] !== 'string' &&
@ -250,7 +271,6 @@ class Postgres extends DboSource {
$fields[$c->name]['length'] = 11;
}
}
}
if (
$fields[$c->name]['default'] === 'NULL' ||
$c->default === null ||

9
lib/Cake/Test/Case/Model/CakeSchemaTest.php
View file

@ -688,7 +688,6 @@ class CakeSchemaTest extends CakeTestCase {
* @return void
*/
public function testSchemaReadWithNonConventionalPrimaryKey() {
$this->skipIf($this->db instanceof Postgres, 'Cannot test on Postgres');
$db = ConnectionManager::getDataSource('test');
$fixture = new NonConventionalPrimaryKeyFixture();
$fixture->create($db);
@ -700,14 +699,14 @@ class CakeSchemaTest extends CakeTestCase {
));
$fixture->drop($db);
$hasTable = isset($read['tables']['non_conventional']);
$this->assertTrue($hasTable, 'non_conventional table should appear');
$this->assertArrayHasKey('non_conventional', $read['tables']);
$versionIdHasKey = isset($read['tables']['non_conventional']['version_id']['key']);
$this->assertTrue($versionIdHasKey, 'version_id key should be set');
$versionIdKeyIsPrimary = $read['tables']['non_conventional']['version_id']['key'] === 'primary';
$this->assertTrue($versionIdKeyIsPrimary, 'version_id key should be primary');
$idHasNoKey = !isset($read['tables']['non_conventional']['id']['key']);
$this->assertTrue($idHasNoKey, 'id key should not be set');
$idHasKey = isset($read['tables']['non_conventional']['id']['key']);
$this->assertFalse($idHasKey, 'id key should not be set');
}
/**