FIX: Set user timezone on password reset login (#9461)

app/assets/javascripts/discourse/controllers/password-reset.js

@@ -54,7 +54,8 @@ export default Controller.extend(PasswordValidation, {
           password: this.accountPassword,
           second_factor_token:
             this.securityKeyCredential || this.secondFactorToken,
-          second_factor_method: this.secondFactorMethod
+          second_factor_method: this.secondFactorMethod,
+          timezone: moment.tz.guess()
         }
       })
         .then(result => {

app/controllers/users_controller.rb

@@ -641,6 +641,7 @@ class UsersController < ApplicationController
       # if we have run into no errors then the user is a-ok to
       # change the password
       if @user.errors.empty?
+        @user.update_timezone_if_missing(params[:timezone]) if params[:timezone]
         @user.password = params[:password]
         @user.password_required!
         @user.user_auth_tokens.destroy_all

spec/requests/users_controller_spec.rb

@@ -279,6 +279,18 @@ describe UsersController do
         expect(response).to redirect_to(wizard_path)
       end
 
+      it "sets the users timezone if the param is present" do
+        user = Fabricate(:admin)
+        UserAuthToken.generate!(user_id: user.id)
+
+        token = user.email_tokens.create(email: user.email).token
+        get "/u/password-reset/#{token}"
+
+        expect(user.user_option.timezone).to eq(nil)
+        put "/u/password-reset/#{token}", params: { password: 'hg9ow8yhg98oadminlonger', timezone: "America/Chicago" }
+        expect(user.user_option.reload.timezone).to eq("America/Chicago")
+      end
+
       it "logs the password change" do
         user = Fabricate(:admin)
         UserAuthToken.generate!(user_id: user.id)