admin: add a button to edit the raw flag value instead of the checksum

libfic/flag_key.go

@@ -119,6 +119,28 @@ func (e Exercice) AddFlagKey(name string, help string, ignorecase bool, validato
 	}
 }
 
+// SetChecksumFromValue .
+func (k FlagKey) ComputeChecksum(val []byte) (cksum []byte, err error) {
+	if k.IgnoreCase {
+		val = bytes.ToLower(val)
+	}
+
+	// Check that raw value passes through the regexp
+	if k.ValidatorRegexp != nil {
+		if val, err = ExecValidatorRegexp(*k.ValidatorRegexp, val); err != nil {
+			return
+		}
+	}
+
+	// Check that the value is not empty
+	if len(val) == 0 {
+		err = errors.New("Empty flag after applying filters")
+	}
+
+	hash := getHashedFlag(val)
+	return hash[:], err
+}
+
 // Update applies modifications back to the database.
 func (k FlagKey) Update() (int64, error) {
 	if k.ValidatorRegexp != nil {
@@ -220,21 +242,10 @@ func (k FlagKey) Check(v interface{}) int {
 		val = va
 	}
 
-	if k.IgnoreCase {
-		val = bytes.ToLower(val)
-	}
-
-	// Check that raw value passes through the regexp
-	if k.ValidatorRegexp != nil {
-		val, _ = ExecValidatorRegexp(*k.ValidatorRegexp, val)
-	}
-
-	// Check that the value is not empty
-	if len(val) == 0 {
+	hash, err := k.ComputeChecksum(val)
+	if err != nil {
 		return 1
 	}
-
-	hash := getHashedFlag(val)
 	if len(k.Checksum) != len(hash) {
 		return 1
 	}