|
| 1 | +package model |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "reflect" |
| 6 | + "strings" |
| 7 | + |
| 8 | + "github.com/gin-gonic/gin" |
| 9 | + "gorm.io/gorm" |
| 10 | + "gorm.io/gorm/schema" |
| 11 | +) |
| 12 | + |
| 13 | +/* |
| 14 | + * @Author: lwnmengjing<lwnmengjing@qq.com> |
| 15 | + * @Date: 2023/9/10 15:29:38 |
| 16 | + * @Last Modified by: lwnmengjing<lwnmengjing@qq.com> |
| 17 | + * @Last Modified time: 2023/9/10 15:29:38 |
| 18 | + */ |
| 19 | + |
| 20 | +type Model struct { |
| 21 | + Table string `json:"tableName" yaml:"tableName" binding:"required"` |
| 22 | + AutoCreateTime schema.TimeType `json:"autoCreateTime" yaml:"autoCreateTime"` |
| 23 | + AutoUpdateTime schema.TimeType `json:"autoUpdateTime" yaml:"autoUpdateTime"` |
| 24 | + HardDeleted bool `json:"hardDeleted" yaml:"hardDeleted"` |
| 25 | + Fields []*Field `json:"fields" yaml:"fields" binding:"required"` |
| 26 | +} |
| 27 | + |
| 28 | +// TableName get table name |
| 29 | +func (m *Model) TableName() string { |
| 30 | + return m.Table |
| 31 | +} |
| 32 | + |
| 33 | +// PrimaryKeys get primary keys |
| 34 | +func (m *Model) PrimaryKeys() []string { |
| 35 | + var keys []string |
| 36 | + for i := range m.Fields { |
| 37 | + if m.Fields[i].PrimaryKey { |
| 38 | + keys = append(keys, m.Fields[i].Name) |
| 39 | + } |
| 40 | + } |
| 41 | + return keys |
| 42 | +} |
| 43 | + |
| 44 | +func (m *Model) Init() { |
| 45 | + if m.AutoCreateTime == 0 { |
| 46 | + m.AutoCreateTime = schema.UnixSecond |
| 47 | + } |
| 48 | + if m.AutoUpdateTime == 0 { |
| 49 | + m.AutoUpdateTime = schema.UnixSecond |
| 50 | + } |
| 51 | + for i := range m.Fields { |
| 52 | + m.Fields[i].Init() |
| 53 | + } |
| 54 | +} |
| 55 | + |
| 56 | +func (m *Model) Default(data any) { |
| 57 | + for i := range m.Fields { |
| 58 | + df := m.Fields[i].DefaultValue |
| 59 | + if m.Fields[i].DefaultValueFN != nil { |
| 60 | + df = m.Fields[i].DefaultValueFN() |
| 61 | + } |
| 62 | + if df == "" { |
| 63 | + continue |
| 64 | + } |
| 65 | + reflect.ValueOf(data).Elem().FieldByName(m.Fields[i].GetName()).Set(reflect.ValueOf(df)) |
| 66 | + } |
| 67 | +} |
| 68 | + |
| 69 | +// MakeModel make virtual model |
| 70 | +func (m *Model) MakeModel() any { |
| 71 | + fieldTypes := make([]reflect.StructField, 0) |
| 72 | + for i := range m.Fields { |
| 73 | + fieldTypes = append(fieldTypes, m.Fields[i].MakeField()) |
| 74 | + } |
| 75 | + return reflect.New(reflect.StructOf(fieldTypes)).Interface() |
| 76 | +} |
| 77 | + |
| 78 | +func (m *Model) MakeList() any { |
| 79 | + fieldTypes := make([]reflect.StructField, 0) |
| 80 | + for i := range m.Fields { |
| 81 | + fieldTypes = append(fieldTypes, m.Fields[i].MakeField()) |
| 82 | + } |
| 83 | + return reflect.New(reflect.SliceOf(reflect.StructOf(fieldTypes))).Interface() |
| 84 | +} |
| 85 | + |
| 86 | +func (m *Model) TableScope(db *gorm.DB) *gorm.DB { |
| 87 | + return db.Table(m.TableName()) |
| 88 | +} |
| 89 | + |
| 90 | +func (m *Model) URI(ctx *gin.Context) (f func(*gorm.DB) *gorm.DB) { |
| 91 | + return func(db *gorm.DB) *gorm.DB { |
| 92 | + db = db.Table(m.TableName()) |
| 93 | + for _, key := range m.PrimaryKeys() { |
| 94 | + db = db.Where(fmt.Sprintf("%s in (?)", key), strings.Split(ctx.Param(key), ",")) |
| 95 | + } |
| 96 | + return db |
| 97 | + } |
| 98 | +} |
| 99 | + |
| 100 | +func (m *Model) Pagination(ctx *gin.Context, p PaginationImp) (f func(*gorm.DB) *gorm.DB) { |
| 101 | + err := ctx.ShouldBindQuery(p) |
| 102 | + return func(db *gorm.DB) *gorm.DB { |
| 103 | + if err != nil { |
| 104 | + _ = db.AddError(err) |
| 105 | + return db |
| 106 | + } |
| 107 | + offset := (p.GetCurrent() - 1) * p.GetPageSize() |
| 108 | + return db.Offset(offset).Limit(p.GetPageSize()) |
| 109 | + } |
| 110 | +} |
| 111 | + |
| 112 | +func (m *Model) Search(ctx *gin.Context) (f func(*gorm.DB) *gorm.DB) { |
| 113 | + return func(db *gorm.DB) *gorm.DB { |
| 114 | + for i := range m.Fields { |
| 115 | + v, ok := ctx.GetQuery(m.Fields[i].JsonTag) |
| 116 | + if !ok { |
| 117 | + continue |
| 118 | + } |
| 119 | + switch m.Fields[i].Search { |
| 120 | + case "exact", "iexact": |
| 121 | + db = db.Where(fmt.Sprintf("`%s`.`%s` = ?", m.Table, m.Fields[i].Name), v) |
| 122 | + case "contains", "icontains": |
| 123 | + db = db.Where(fmt.Sprintf("`%s`.`%s` like ?", m.Table, m.Fields[i].Name), "%"+v+"%") |
| 124 | + case "gt": |
| 125 | + db = db.Where(fmt.Sprintf("`%s`.`%s` > ?", m.Table, m.Fields[i].Name), v) |
| 126 | + case "gte": |
| 127 | + db = db.Where(fmt.Sprintf("`%s`.`%s` >= ?", m.Table, m.Fields[i].Name), v) |
| 128 | + case "lt": |
| 129 | + db = db.Where(fmt.Sprintf("`%s`.`%s` < ?", m.Table, m.Fields[i].Name), v) |
| 130 | + case "lte": |
| 131 | + db = db.Where(fmt.Sprintf("`%s`.`%s` <= ?", m.Table, m.Fields[i].Name), v) |
| 132 | + case "startWith", "istartWith": |
| 133 | + db = db.Where(fmt.Sprintf("`%s`.`%s` like ?", m.Table, m.Fields[i].Name), v+"%") |
| 134 | + case "endWith", "iendWith": |
| 135 | + db = db.Where(fmt.Sprintf("`%s`.`%s` like ?", m.Table, m.Fields[i].Name), "%"+v) |
| 136 | + case "in": |
| 137 | + arr, ok := ctx.GetQueryArray(m.Fields[i].JsonTag) |
| 138 | + if !ok { |
| 139 | + continue |
| 140 | + } |
| 141 | + db = db.Where(fmt.Sprintf("`%s`.`%s` in (?)", m.Table, m.Fields[i].JsonTag), arr) |
| 142 | + case "isnull": |
| 143 | + db = db.Where(fmt.Sprintf("`%s`.`%s` isnull", m.Table, m.Fields[i].JsonTag)) |
| 144 | + case "order": |
| 145 | + switch v { |
| 146 | + case "desc": |
| 147 | + db = db.Order(fmt.Sprintf("`%s`.`%s` desc", m.Table, m.Fields[i].JsonTag)) |
| 148 | + case "asc": |
| 149 | + db = db.Order(fmt.Sprintf("`%s`.`%s` asc", m.Table, m.Fields[i].JsonTag)) |
| 150 | + } |
| 151 | + } |
| 152 | + } |
| 153 | + return db |
| 154 | + } |
| 155 | +} |
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