fix: populate default created_by and add not-null constraint in templates (#2290)

coderd/database/dump.sql

@@ -249,7 +249,7 @@ CREATE TABLE templates (
     description character varying(128) DEFAULT ''::character varying NOT NULL,
     max_ttl bigint DEFAULT '604800000000000'::bigint NOT NULL,
     min_autostart_interval bigint DEFAULT '3600000000000'::bigint NOT NULL,
-    created_by uuid
+    created_by uuid NOT NULL
 );
 
 CREATE TABLE users (

coderd/database/migrations/000023_template_created_by_not_null.down.sql

@@ -0,0 +1 @@
+ALTER TABLE ONLY templates ALTER COLUMN created_by DROP NOT NULL;

coderd/database/migrations/000023_template_created_by_not_null.up.sql

@@ -0,0 +1,14 @@
+UPDATE
+    templates
+SET
+    created_by = (
+        SELECT user_id FROM organization_members
+        WHERE organization_members.organization_id = templates.organization_id
+        ORDER BY created_at
+        LIMIT 1
+    )
+WHERE
+    created_by IS NULL;
+
+
+ALTER TABLE ONLY templates ALTER COLUMN created_by SET NOT NULL;

coderd/database/models.go

@@ -438,7 +438,7 @@ type Template struct {
 	Description          string          `db:"description" json:"description"`
 	MaxTtl               int64           `db:"max_ttl" json:"max_ttl"`
 	MinAutostartInterval int64           `db:"min_autostart_interval" json:"min_autostart_interval"`
-	CreatedBy            uuid.NullUUID   `db:"created_by" json:"created_by"`
+	CreatedBy            uuid.UUID       `db:"created_by" json:"created_by"`
 }
 
 type TemplateVersion struct {

coderd/database/queries.sql.go

@@ -1797,7 +1797,7 @@ type InsertTemplateParams struct {
 	Description          string          `db:"description" json:"description"`
 	MaxTtl               int64           `db:"max_ttl" json:"max_ttl"`
 	MinAutostartInterval int64           `db:"min_autostart_interval" json:"min_autostart_interval"`
-	CreatedBy            uuid.NullUUID   `db:"created_by" json:"created_by"`
+	CreatedBy            uuid.UUID       `db:"created_by" json:"created_by"`
 }
 
 func (q *sqlQuerier) InsertTemplate(ctx context.Context, arg InsertTemplateParams) (Template, error) {