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scope_inline_preload.go
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scope_inline_preload.go
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package aorm
import (
"fmt"
"reflect"
)
// AutoInlinePreload preload associations
func (s *Scope) AutoInlinePreload() *Scope {
if s.Value == nil {
return s
}
if _, skip := s.InstanceGet(OptSkipPreload); skip {
return s
}
if _, skip := s.Get(OptSkipPreload); skip {
return s
}
key := InlinePreloadFieldsKeyOf(s.Value)
if data, ok := s.Get(key); ok {
for k := range data.(map[string]bool) {
s.Search.InlinePreload(k)
}
return s
}
modelStruct := s.Struct()
value := reflect.New(modelStruct.Type).Interface()
if ipf, ok := value.(InlinePreloadFields); ok {
for _, fieldName := range ipf.GetAormInlinePreloadFields() {
if f, ok := modelStruct.FieldsByName[fieldName]; ok {
if f.Relationship != nil {
s.Search.InlinePreload(f.Name)
}
} else if fieldName != "*" {
panic(fmt.Errorf("Field %s#%s does not exists", modelStruct.Fqn(), fieldName))
}
}
} else if ipf, ok := value.(InlinePreloadFieldsWithScope); ok {
for _, fieldName := range ipf.GetAormInlinePreloadFields(s) {
if f, ok := modelStruct.FieldsByName[fieldName]; ok {
if f.Relationship != nil {
s.Search.InlinePreload(f.Name)
}
} else if fieldName != "*" {
panic(fmt.Errorf("Field %s#%s does not exists", modelStruct.Fqn(), fieldName))
}
}
}
if modelStruct.virtualFieldsAutoInlinePreload != nil {
vfloop:
for _, fieldName := range modelStruct.virtualFieldsAutoInlinePreload {
for _, prl := range s.Search.inlinePreload {
if prl.schema == fieldName {
continue vfloop
}
}
s.Search.InlinePreload(fieldName)
}
}
return s
}
// InlinePreloadFields set inline preload fields of value type
func (s *Scope) InlinePreloadFields(value interface{}, fields ...string) *Scope {
key := InlinePreloadFieldsKeyOf(value)
new := map[string]bool{}
if old, ok := s.Get(key); ok {
for k := range old.(map[string]bool) {
new[k] = true
}
}
for _, f := range fields {
if f[0] == '-' {
f := f[1:]
if _, ok := new[f]; ok {
delete(new, f)
continue
}
}
new[f] = true
}
return s.Set(key, new)
}