func processFilter(filter *usecases.Filter) (*interfaces.GormFilter, error) {
fields := filter.Fields
dbNamedFields := make([]string, len(fields))
for i, field := range fields {
dbNamedFields[i] = utils.ToDBName(field)
}
if filter.Order != "" {
order := strings.ToLower(filter.Order)
matched, err := regexp.MatchString("\\A\\w+ (asc|desc)\\z", order)
if err != nil || !matched {
return nil, errors.New("invalid order filter")
}
split := strings.Split(filter.Order, " ")
filter.Order = utils.ToDBName(split[0]) + " " + split[1]
}
processedFilter := &interfaces.GormFilter{Fields: dbNamedFields, Limit: filter.Limit, Offset: filter.Offset, Order: filter.Order}
buffer := &bytes.Buffer{}
err := processCondition(buffer, "", andSql, "", filter.Where)
if err != nil {
return nil, err
}
processedFilter.Where = buffer.String()
gormIncludes, err := processInclude(filter.Include)
if err != nil {
return nil, err
}
processedFilter.Include = gormIncludes
return processedFilter, nil
}
