use to test

insert can receive three type data struct map[offset]interface{} map[int]interface{} insert is difficult that have preload data

use join to association query

model meta field value

required object in Toy.[Model] TODO Brick.[Insert,Find,Update,Save,USave,Delete] method's parameter must be point object

OneToOne with specified container field declaration,ToyBrick.Preload(<container field>) will automatic association this field

BelongTo with specified container field declaration,ToyBrick.Preload(<container field>) will automatic association this field

return

this module is get preload which is right middle field name in many-to-many mode it only use for sub model type is same with main model type e.g User{

replace will failure when have foreign key

postgres have not replace use ON CONFLICT(%s) replace

set field to field value map or virtual field value map but if value is invalid delete it on map

default value in database