Allow autofill of invitation code from URL

aleksis/core/frontend/components/account/AccountRegistrationForm.vue

@@ -67,6 +67,9 @@ import PersonDetailsCard from "../person/PersonDetailsCard.vue";
             :step="getStepIndex('invitation')"
           >
             <h2 class="text-h6 mb-4">{{ $t(getStepTitleKey("invitation")) }}</h2>
+            <v-alert v-if="invitationCodeAutofilled" type="info" outlined class="mb-4">{{
+              $t("accounts.signup.form.steps.invitation.autofilled")
+            }}</v-alert>
             <div class="mb-4">
               <v-form v-model="validationStatuses['invitation']">
                 <div :aria-required="invitationCodeRequired">
@@ -818,6 +821,7 @@ export default {
       validationStatuses: {},
       invitation: null,
       invitationCodeInvalid: false,
+      invitationCodeAutofilled: false,
       accountRegistrationSent: false,
       step: 1,
       emailMode: null,
@@ -863,6 +867,10 @@ export default {
   },
   mounted() {
     this.addPermissions(["core.signup_rule", "core.invite_enabled"]);
+    if (this.$route.query.invitation_code) {
+      this.data.invitationCode = this.$route.query.invitation_code;
+      this.invitationCodeAutofilled = true;
+    }
   },
 };
 </script>

aleksis/core/frontend/messages/en.json

@@ -56,6 +56,7 @@
               "code_required": "Invitation code required"
             },
             "not_valid": "The invitation code you entered is not valid.",
+            "autofilled": "The invitation code was automatically filled in.",
             "fields": {
               "invitation_code": {
                 "label": "Invitation code",