crud register update

crud_update_function.go

func (crud *CRUD) registerU() gomHTTP.ServerRoute {
	// build update sql
	fields := crud.Config.updateFields
	if len(fields) == 0 {
		// allow update all fields
		fields = crud.Config.fields
	}
	fieldNames := make([]string, len(fields))
	for i, field := range fields {
		fieldNames[i] = field.name
	}
	crud.Config.updatedFields = fields
	names := make([]string, len(fieldNames))
	for i, field := range fieldNames {
		names[i] = fmt.Sprintf("`%s` = :%s", field, field)
	}
	crud.Config.sqlCRUDUpdate = fmt.Sprintf(sqlCRUDUpdate, crud.Config.TableName,
		strings.Join(names, ","), crud.Config.pk.name, crud.Config.pk.name)
	// build validator
	validators := []gomHTTP.ParamValidator{validatePrimaryKey(crud.Config.pk.index)}
	for _, field := range fieldNames {
		if validatorName, ok := crud.Config.fieldValidators[field]; ok {
			if validator, ok := crud.Config.Validators[validatorName]; ok {
				validators = append(validators, getMethodValidator("update", validator))
			}
		}
	}
	return gomHTTP.ServerRoute{
		Name:       "crud_update_" + crud.Config.TableName,
		Method:     http.MethodPatch,
		Path:       fmt.Sprintf("/%s", crud.Config.TableName),
		Validators: validators,
		Handler:    crud.handleUpdate,
	}
}