Merge pull request #480 from chris-kobrzak/master

dhmlau · web-flow · commit edc9c80efdbf · 2021-07-12T21:26:56.000-04:00
Defensively drop constraints during migrations
diff --git a/lib/migration.js b/lib/migration.js
@@ -586,7 +586,7 @@ function mixinMigration(PostgreSQL) {
         }
 
         if (needsToDrop) {
-          sql.push('DROP CONSTRAINT ' + self.escapeName(fk.fkName));
+          sql.push('DROP CONSTRAINT IF EXISTS ' + self.escapeName(fk.fkName));
           removedFks.push(fk); // keep track that we removed these
         }
 

Original file line number	Diff line number	Diff line change
`@@ -586,7 +586,7 @@ function mixinMigration(PostgreSQL) {`
`586`	`586`	`}`
`587`	`587`
`588`	`588`	`if (needsToDrop) {`
`589`		`- sql.push('DROP CONSTRAINT ' + self.escapeName(fk.fkName));`
	`589`	`+ sql.push('DROP CONSTRAINT IF EXISTS ' + self.escapeName(fk.fkName));`
`590`	`590`	`removedFks.push(fk); // keep track that we removed these`
`591`	`591`	`}`
`592`	`592`