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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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50
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
@ -238,17 +250,25 @@ class Postgres extends DboSource {
"$1",
preg_replace('/::.*/', '', $c->default)
),
'length' => $length
'length' => $length,
);
if ($model instanceof Model) {
if ($c->name === $model->primaryKey) {
$fields[$c->name]['key'] = 'primary';
if (
$fields[$c->name]['type'] !== 'string' &&
$fields[$c->name]['type'] !== 'uuid'
) {
$fields[$c->name]['length'] = 11;
}
// 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' &&
$fields[$c->name]['type'] !== 'uuid'
) {
$fields[$c->name]['length'] = 11;
}
}
if (