mirror of https://github.com/go-gorm/gorm.git
86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
package gorm
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import (
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"database/sql"
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"database/sql/driver"
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"reflect"
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"gorm.io/gorm/clause"
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"gorm.io/gorm/schema"
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)
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type DeletedAt sql.NullTime
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// Scan implements the Scanner interface.
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func (n *DeletedAt) Scan(value interface{}) error {
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return (*sql.NullTime)(n).Scan(value)
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}
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// Value implements the driver Valuer interface.
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func (n DeletedAt) Value() (driver.Value, error) {
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if !n.Valid {
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return nil, nil
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}
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return n.Time, nil
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}
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func (DeletedAt) QueryClauses() []clause.Interface {
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return []clause.Interface{
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clause.Where{Exprs: []clause.Expression{
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clause.Eq{
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Column: clause.Column{Table: clause.CurrentTable, Name: "deleted_at"},
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Value: nil,
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},
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}},
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}
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}
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func (DeletedAt) DeleteClauses() []clause.Interface {
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return []clause.Interface{SoftDeleteClause{}}
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}
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type SoftDeleteClause struct {
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}
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func (SoftDeleteClause) Name() string {
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return ""
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}
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func (SoftDeleteClause) Build(clause.Builder) {
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}
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func (SoftDeleteClause) MergeClause(*clause.Clause) {
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}
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func (SoftDeleteClause) ModifyStatement(stmt *Statement) {
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if stmt.SQL.String() == "" {
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stmt.AddClause(clause.Set{{Column: clause.Column{Name: "deleted_at"}, Value: stmt.DB.NowFunc()}})
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if stmt.Schema != nil {
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_, queryValues := schema.GetIdentityFieldValuesMap(stmt.ReflectValue, stmt.Schema.PrimaryFields)
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column, values := schema.ToQueryValues(stmt.Table, stmt.Schema.PrimaryFieldDBNames, queryValues)
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if len(values) > 0 {
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stmt.AddClause(clause.Where{Exprs: []clause.Expression{clause.IN{Column: column, Values: values}}})
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}
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if stmt.Dest != stmt.Model && stmt.Model != nil {
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_, queryValues = schema.GetIdentityFieldValuesMap(reflect.ValueOf(stmt.Model), stmt.Schema.PrimaryFields)
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column, values = schema.ToQueryValues(stmt.Table, stmt.Schema.PrimaryFieldDBNames, queryValues)
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if len(values) > 0 {
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stmt.AddClause(clause.Where{Exprs: []clause.Expression{clause.IN{Column: column, Values: values}}})
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}
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}
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}
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if _, ok := stmt.Clauses["WHERE"]; !ok {
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stmt.DB.AddError(ErrMissingWhereClause)
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return
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}
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stmt.AddClauseIfNotExists(clause.Update{})
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stmt.Build("UPDATE", "SET", "WHERE")
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}
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}
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