implement gen.Exists method (go-gorm#868)

* feat: implement gen.Exists method * feat: remove verbose generated method
coderyw · Jun 7, 2023 · e1b2ee2 · e1b2ee2
1 parent 16aa4cd
commit e1b2ee2
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Showing 2 changed files with 6 additions and 4 deletions.
diff --git a/do.go b/do.go
@@ -970,6 +970,12 @@ func Table(subQueries ...SubQuery) Dao {
 	}
 }
 
+// Exists EXISTS expression
+// SELECT * FROM table WHERE EXISTS (SELECT NAME FROM users WHERE id = 1)
+func Exists(subQuery SubQuery) Condition {
+	return field.CompareSubQuery(field.ExistsOp, nil, subQuery.underlyingDB())
+}
+
 // ======================== sub query method ========================
 
 // Columns columns array

diff --git a/internal/template/method.go b/internal/template/method.go
@@ -73,10 +73,6 @@ func ({{.S}} {{.QueryStructName}}Do) Where(conds ...gen.Condition) {{.ReturnObje
 	return {{.S}}.withDO({{.S}}.DO.Where(conds...))
 }
 
-func ({{.S}} {{.QueryStructName}}Do) Exists(subquery interface{UnderlyingDB() *gorm.DB}) {{.ReturnObject}} {
-	return {{.S}}.Where(field.CompareSubQuery(field.ExistsOp, nil, subquery.UnderlyingDB()))
-}
-
 func ({{.S}} {{.QueryStructName}}Do) Order(conds ...field.Expr) {{.ReturnObject}} {
 	return {{.S}}.withDO({{.S}}.DO.Order(conds...))
 }