Function valuesFromForm

middleware/extractor.go:235–253

valuesFromForm returns a function that extracts values from the form field.

(name string, limit uint)

// valuesFromForm returns a function that extracts values from the form field.
func valuesFromForm(name string, limit uint) ValuesExtractor {
	if limit == 0 {
		limit = 1
	}
	return func(c *echo.Context) ([]string, ExtractorSource, error) {
		if c.Request().Form == nil {
			_, _ = c.MultipartForm() // we want to trigger c.request.ParseMultipartForm(c.formParseMaxMemory)
		}
		values := c.Request().Form[name]
		if len(values) == 0 {
			return nil, ExtractorSourceForm, errFormExtractorValueMissing
		}
		if len(values) > int(limit)-1 {
			values = values[:limit]
		}
		result := append([]string{}, values...)
		return result, ExtractorSourceForm, nil
	}
}