Validate, Saved hooks

hooks.go

@@ -0,0 +1,85 @@
+package mgoapi
+
+import (
+	"fmt"
+	"reflect"
+
+	"gitbase.de/gopackage/mgocrud"
+	"gopkg.in/mgo.v2/bson"
+)
+
+func validateFilter(c *Context, m mgocrud.ModelInterface, filter bson.M) (newFilter bson.M, err error) {
+	// 	spew.Dump(filter)
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("filter validation error: %s", r)
+		}
+	}()
+
+	if filter != nil {
+		newFilter, err = _validateFilter(reflect.TypeOf(m), filter, true)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if i, ok := m.(interface {
+		ValidateFilter(*Context, bson.M) (bson.M, error)
+	}); ok {
+		// custom filter manipulation
+		newFilter, err = i.ValidateFilter(c, newFilter)
+	}
+
+	//	spew.Dump(newFilter)
+
+	return newFilter, err
+}
+
+func validateSelect(c *Context, m mgocrud.ModelInterface, selector bson.M) (newSelector bson.M, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("select validation error: %s", r)
+		}
+	}()
+
+	if selector != nil {
+		newSelector, err = _validateFilter(reflect.TypeOf(m), selector, false)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if i, ok := m.(interface {
+		ValidateSelect(*Context, bson.M) bson.M
+	}); ok {
+		// custom select manipulation
+		newSelector = i.ValidateSelect(c, newSelector)
+	}
+
+	return newSelector, nil
+}
+
+// validateObject first validates via custom validate function on model with api context,
+// later it validates via mgocrud validator
+func validateObject(c *Context, m mgocrud.ModelInterface, changes bson.M) error {
+	if i, ok := m.(interface {
+		Validate(*Context, bson.M) error
+	}); ok {
+		err := i.Validate(c, changes)
+		if err != nil {
+			return err
+		}
+	}
+
+	return mgocrud.ValidateObject(c.DB, m, changes)
+}
+
+func savedObject(c *Context, m mgocrud.ModelInterface, changes bson.M) error {
+	if i, ok := m.(interface {
+		Saved(*Context, bson.M) error
+	}); ok {
+		return i.Saved(c, changes)
+	}
+
+	return nil
+}