add get cards price model

models/card_price.go

@@ -3,10 +3,13 @@ package models
 import (
 	"errors"
 	"time"
+
+	"github.com/jmoiron/sqlx"
 )
 
 // CardPrice -
 type CardPrice struct {
+	ID     string    `db:"id" cc:"id"`
 	Card   string    `db:"card" cc:"card"`
 	PriceN float32   `db:"price_n" cc:"price_n"`
 	PriceF float32   `db:"price_f" cc:"price_f"`
@@ -51,18 +54,21 @@ func InsertCardPrice(arg InsertCardPriceOpts) (err error) {
 	return
 }
 
-// GetLastPriceByCard -
-func GetLastPriceByCard(id string) (price *CardPrice, err error) {
-	if len(id) == 0 {
-		return nil, errors.New("id is empty")
+// GetCardsLastPrice -
+func GetCardsLastPrice(ids []string) (price []*CardPrice, err error) {
+	if len(ids) == 0 {
+		return nil, errors.New("no card id")
 	}
 
-	price = &CardPrice{}
-	query := `select cp.card, cp.price_n, cp.price_f, cp.ctime from "public"."card_price" cp where "card" = $1`
-	err = x.Get(price, query, id)
+	query := `select distinct on (cp.id) cp.id, cp.card, cp.price_n, cp.price_f, cp.ctime from card_price cp where cp.card in (?) order by cp.id, cp.ctime desc`
+
+	query, args, err := sqlx.In(query, ids)
 	if err != nil {
 		return nil, err
 	}
 
+	query = x.Rebind(query)
+	err = x.Select(&price, query, args...)
+
 	return
 }

schema/20190122-1.sql

@@ -0,0 +1,8 @@
+alter table card_price
+	add id uuid default uuid_generate_v4() not null;
+
+alter table card_price
+	add constraint card_price_pk
+		primary key (id);
+
+

schema/dbVersion.json

@@ -3,7 +3,8 @@
     {"file": "main.sql", "version": 1},
     {"file": "20190106-1.sql", "version": 2},
     {"file": "20190115-1.sql", "version": 3},
-    {"file": "20190116-1.sql", "version": 4}
+    {"file": "20190116-1.sql", "version": 4},
+    {"file": "20190122-1.sql", "version": 5}
   ],
   "test": []
 }