feat(forms): handle string with and without line boundary on pattern validator (#19256)

PR Close #19256
2017-09-18 22:28:36 +02:00
parent d6ba9f9fb4
commit 54bf179888
2 changed files with 14 additions and 1 deletions
--- a/packages/forms/src/validators.ts
+++ b/packages/forms/src/validators.ts
@ -163,7 +163,14 @@ export class Validators {
    let regex: RegExp;
    let regexStr: string;
    if (typeof pattern === 'string') {
-      regexStr = `^${pattern}$`;
+      regexStr = '';
+
+      if (pattern.charAt(0) !== '^') regexStr += '^';
+
+      regexStr += pattern;
+
+      if (pattern.charAt(pattern.length - 1) !== '$') regexStr += '$';
+
      regex = new RegExp(regexStr);
    } else {
      regexStr = pattern.toString();