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

@@ -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"
@@ -11,24 +12,29 @@ 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) {
 	var where []string
 	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)
 	}