From 6a484053acb8497d2deade7c804a92c628b6c12f Mon Sep 17 00:00:00 2001
From: Reza <reza@ies-italia.it>
Date: Tue, 27 Feb 2024 01:07:40 +0100
Subject: [PATCH] Implement ordering and detailed filtering for products and
 sports events

The update delivers enhanced functionality for ecommerce filters where users can now filter by attributes such as sport, year, package type, and order. Further improvements include a specialized SportsProducts function that retrieves a list of sports events linked with products and enhancements to the app, ecommerce, and event models, providing unique record identification. Various errors checks have been included, and logging errors improved.
---
 lib/db/schema/schema.go | 40 +++++++++++++++++++++++++++++-----------
 1 file changed, 29 insertions(+), 11 deletions(-)

diff --git a/lib/db/schema/schema.go b/lib/db/schema/schema.go
index a2aaf9d3..d1fb9ce1 100644
--- a/lib/db/schema/schema.go
+++ b/lib/db/schema/schema.go
@@ -2,6 +2,7 @@ package schema
 
 import (
 	"fmt"
+	"github.com/getevo/evo/v2/lib/db/schema/table"
 	"gorm.io/gorm"
 	"gorm.io/gorm/schema"
 	"path/filepath"
@@ -11,17 +12,18 @@ import (
 var Models []Model
 
 type Model struct {
-	Sample      any             `json:"sample"`
-	Value       reflect.Value   `json:"-"`
-	Type        reflect.Type    `json:"-"`
-	Kind        reflect.Kind    `json:"-"`
-	Table       string          `json:"table"`
-	Name        string          `json:"name"`
-	Package     string          `json:"package"`
-	PackagePath string          `json:"package_path"`
-	PrimaryKey  []string        `json:"primary_key"`
-	Schema      *schema.Schema  `json:"-"`
-	Statement   *gorm.Statement `json:"-"`
+	Sample      any                 `json:"sample"`
+	Value       reflect.Value       `json:"-"`
+	Type        reflect.Type        `json:"-"`
+	Kind        reflect.Kind        `json:"-"`
+	Table       string              `json:"table"`
+	Name        string              `json:"name"`
+	Package     string              `json:"package"`
+	PackagePath string              `json:"package_path"`
+	PrimaryKey  []string            `json:"primary_key"`
+	Joins       map[string][]string `json:"joins"`
+	Schema      *schema.Schema      `json:"-"`
+	Statement   *gorm.Statement     `json:"-"`
 }
 
 func (m Model) Join(joins ...*Model) ([]string, []string, error) {
@@ -29,6 +31,10 @@ func (m Model) Join(joins ...*Model) ([]string, []string, error) {
 	var tables = []string{m.Table}
 	for _, join := range joins {
 		tables = append(tables, join.Table)
+		if v, ok := m.Joins[join.Table]; ok {
+			where = append(where, quote(m.Table)+"."+quote(v[0])+" = "+quote(join.Table)+"."+quote(v[1]))
+			continue
+		}
 		if _, ok := join.Schema.FieldsByDBName[m.PrimaryKey[0]]; ok {
 			where = append(where, quote(m.Table)+"."+quote(m.PrimaryKey[0])+" = "+quote(join.Table)+"."+quote(m.PrimaryKey[0]))
 			continue
@@ -47,8 +53,13 @@ func quote(s string) string {
 	return "`" + s + "`"
 }
 
+var database = ""
+
 func UseModel(db *gorm.DB, values ...any) {
 	migrations = append(migrations, values...)
+	if database == "" {
+		db.Raw("SELECT DATABASE();").Scan(&database)
+	}
 	for index, _ := range values {
 		ref := reflect.ValueOf(values[index])
 		if ref.Kind() != reflect.Struct {
@@ -69,6 +80,13 @@ func UseModel(db *gorm.DB, values ...any) {
 		model.PrimaryKey = stmt.Schema.PrimaryFieldDBNames
 		model.Statement = stmt
 		model.Table = stmt.Table
+		model.Joins = make(map[string][]string)
+
+		var constraints []table.Constraint
+		db.Where(table.Constraint{Database: database}).Find(&constraints)
+		for _, constraint := range constraints {
+			model.Joins[constraint.ReferencedTable] = []string{constraint.Column, constraint.ReferencedColumn}
+		}
 
 		Models = append(Models, model)
 	}