Best way to parse a string to an enum

I have an enum as follows

type Capability int

const (
    Read   Capability = iota // Read   = 0
    Create                   // Create = 1
    Update                   // Update = 2
    Delete                   // Delete = 3
    List                     // List   = 4
)

I want to be able to get the string representation from the enum AS WELL AS parse a string to get the enum.

I get the string from the enum as follows.

capabilityStrs := []string{"read", "create", "update", "delete", "list"}
func (c Capability) String() string {
    return capabilityStrs[c]
}

How do I parse a string into an enum such that a call to ParseString("read") gives me Read. What is the Best way to go about this?

Answer based on the comment by @super

var (
    capabilitiesMap = map[string]Capability{
        "read":   Read,
        "create": Create,
        "update": Update,
        "delete": Delete,
        "list":   List,
    }
)
func ParseString(str string) (Capability, bool) {
    c, ok := capabilitiesMap[strings.ToLower(str)]
    return c, ok
}