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Ember data: convey genera/species relationships

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This commit is contained in:
Matthew Dillon 2015-01-20 12:58:03 -09:00
parent 52b21b24d8
commit 1dbfb3bc54
7 changed files with 62 additions and 20 deletions
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17
datastore/genera.go
View file

@ -8,7 +8,7 @@ import (
)
func init() {
DB.AddTableWithName(models.Genus{}, "genera").SetKeys(true, "Id")
DB.AddTableWithName(models.GenusBase{}, "genera").SetKeys(true, "Id")
}
type generaStore struct {
@ -17,7 +17,8 @@ type generaStore struct {
func (s *generaStore) Get(id int64) (*models.Genus, error) {
var genus models.Genus
if err := s.dbh.SelectOne(&genus, `SELECT * FROM genera WHERE id=$1;`, id); err != nil {
err := s.dbh.SelectOne(&genus, `SELECT g.*, array_agg(s.id) AS species FROM genera g LEFT OUTER JOIN species s ON s.genus_id=g.id WHERE g.id=$1 GROUP BY g.id;`, id)
if err != nil {
return nil, err
}
if &genus == nil {
@ -30,11 +31,14 @@ func (s *generaStore) Create(genus *models.Genus) (bool, error) {
currentTime := time.Now()
genus.CreatedAt = currentTime
genus.UpdatedAt = currentTime
if err := s.dbh.Insert(genus); err != nil {
// Ugly --- extract embedded struct
base := genus.GenusBase
if err := s.dbh.Insert(base); err != nil {
if strings.Contains(err.Error(), `violates unique constraint "genus_idx"`) {
return false, err
}
}
genus.Id = base.Id
return true, nil
}
@ -43,7 +47,7 @@ func (s *generaStore) List(opt *models.GenusListOptions) ([]*models.Genus, error
opt = &models.GenusListOptions{}
}
var genera []*models.Genus
err := s.dbh.Select(&genera, `SELECT * FROM genera LIMIT $1 OFFSET $2;`, opt.PerPageOrDefault(), opt.Offset())
err := s.dbh.Select(&genera, `SELECT g.*, array_agg(s.id) AS species FROM genera g LEFT OUTER JOIN species s ON s.genus_id=g.id GROUP BY g.id LIMIT $1 OFFSET $2;`, opt.PerPageOrDefault(), opt.Offset())
if err != nil {
return nil, err
}
@ -61,7 +65,8 @@ func (s *generaStore) Update(id int64, genus *models.Genus) (bool, error) {
}
genus.UpdatedAt = time.Now()
changed, err := s.dbh.Update(genus)
changed, err := s.dbh.Update(genus.GenusBase)
if err != nil {
return false, err
}
@ -79,7 +84,7 @@ func (s *generaStore) Delete(id int64) (bool, error) {
return false, err
}
deleted, err := s.dbh.Delete(genus)
deleted, err := s.dbh.Delete(genus.GenusBase)
if err != nil {
return false, err
}

15
datastore/genera_test.go
View file

@ -12,15 +12,15 @@ func insertGenus(t *testing.T, tx *modl.Transaction) *models.Genus {
// Test on a clean database
tx.Exec(`DELETE FROM genera;`)
genus := newGenus()
if err := tx.Insert(genus); err != nil {
g := newGenus()
if err := tx.Insert(g); err != nil {
t.Fatal(err)
}
return genus
return &models.Genus{g, []int64(nil)}
}
func newGenus() *models.Genus {
return &models.Genus{GenusName: "Test Genus"}
func newGenus() *models.GenusBase {
return &models.GenusBase{GenusName: "Test Genus"}
}
func TestGeneraStore_Get_db(t *testing.T) {
@ -46,10 +46,11 @@ func TestGeneraStore_Create_db(t *testing.T) {
tx, _ := DB.Begin()
defer tx.Rollback()
genus := newGenus()
base_genus := newGenus()
genus := models.Genus{base_genus, []int64(nil)}
d := NewDatastore(tx)
created, err := d.Genera.Create(genus)
created, err := d.Genera.Create(&genus)
if err != nil {
t.Fatal(err)
}