tonyair
/
silverstripe-postgresql
mirror of https://github.com/silverstripe/silverstripe-postgresql
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

BUGFIX: constraint row violations errors now fixed. Missing enums are converted to something from the provided list

This commit is contained in:
Geoff Munn 2010-11-18 23:10:38 +00:00
parent c542db8fc3
commit a27ca9a55a
1 changed files with 13 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
code/PostgreSQLDatabase.php
View File

@ -568,10 +568,19 @@ class PostgreSQLDatabase extends SS_Database {
// SET check constraint (The constraint HAS to be dropped)
$existing_constraint=$this->query("SELECT conname FROM pg_constraint WHERE conname='{$tableName}_{$colName}_check';")->value();
//If you run into constraint row violation conflicts, here's how to reset it:
//alter table "SiteTree" drop constraint "SiteTree_ClassName_check";
//update "SiteTree" set "ClassName"='NewValue' WHERE "ClassName"='OldValue';
//Repeat this for _Live and for _versions
//Take this new constraint and see what's outstanding from the target table:
$constraint_bits=explode('(', $matches[4]);
$constraint_values=trim($constraint_bits[2], ')');
$constraint_values_bits=explode(',', $constraint_values);
$default=trim($constraint_values[0], " '");
//Now go and convert anything that's not in this list to the first thing in the enum list
//We have to run this as a query, not as part of the alteration queries due to the way they are constructed.
$updateConstraint='';
$updateConstraint.="UPDATE \"{$tableName}\" SET \"$colName\"='$default' WHERE \"$colName\" NOT IN ($constraint_values);";
$updateConstraint.="UPDATE \"{$tableName}_Live\" SET \"$colName\"='$default' WHERE \"$colName\" NOT IN ($constraint_values);";
$updateConstraint.="UPDATE \"{$tableName}_versions\" SET \"$colName\"='$default' WHERE \"$colName\" NOT IN ($constraint_values);";
DB::query($updateConstraint);
//First, delete any existing constraint on this column, even if it's no longer an enum
if($existing_constraint)