From 645b8b090e4d78ca7007a6bf4249a01bffd6b125 Mon Sep 17 00:00:00 2001
From: Geremia Taglialatela <tagliala.dev@gmail.com>
Date: Thu, 28 Feb 2019 21:24:55 +0100
Subject: [PATCH] Support javascript case-sensitive uniqueness

---
 coffeescript/rails.validations.coffee         |  8 +++-
 .../public/test/validators/uniqueness.js      | 43 ++++++++++++++++++-
 .../assets/javascripts/rails.validations.js   |  8 +++-
 3 files changed, 55 insertions(+), 4 deletions(-)

diff --git a/coffeescript/rails.validations.coffee b/coffeescript/rails.validations.coffee
index 644a33d36..a5d495297 100644
--- a/coffeescript/rails.validations.coffee
+++ b/coffeescript/rails.validations.coffee
@@ -413,8 +413,14 @@ ClientSideValidations =
             valid = true
 
             form.find(":input[name^=\"#{name_prefix}\"][name$=\"#{name_suffix}\"]").each ->
+              other_value = $(@).val()
+
+              unless options.case_sensitive
+                value = value.toLowerCase()
+                other_value = other_value.toLowerCase()
+
               if $(@).attr('name') != name
-                if $(@).val() == value
+                if other_value == value
                   valid = false
                   $(@).data('notLocallyUnique', true)
                 else
diff --git a/test/javascript/public/test/validators/uniqueness.js b/test/javascript/public/test/validators/uniqueness.js
index 20ecd1d45..7a93c70bc 100644
--- a/test/javascript/public/test/validators/uniqueness.js
+++ b/test/javascript/public/test/validators/uniqueness.js
@@ -33,7 +33,7 @@ QUnit.module('Uniqueness options', {
   }
 });
 
-QUnit.test('when matching local uniqueness for nested has-many resources', function(assert) {
+QUnit.test('when matching local case-insensitive uniqueness for nested has-many resources', function(assert) {
   dataCsv = {
     html_settings: {
       type: 'ActionView::Helpers::FormBuilder',
@@ -67,7 +67,46 @@ QUnit.test('when matching local uniqueness for nested has-many resources', funct
       options = { 'message': "must be unique" };
 
   user_0_email.val('not-locally-unique');
-  user_1_email.val('not-locally-unique');
+  user_1_email.val('Not-Locally-Unique');
 
   assert.equal(ClientSideValidations.validators.local.uniqueness(user_1_email, options), "must be unique");
 });
+
+QUnit.test('when matching case-sensitive local uniqueness for nested has-many resources', function(assert) {
+  dataCsv = {
+    html_settings: {
+      type: 'ActionView::Helpers::FormBuilder',
+      input_tag: '<div class="field_with_errors"><span id="input_tag" /><label for="user_name" class="message"></label></div>',
+      label_tag: '<div class="field_with_errors"><label id="label_tag" /></div>'
+    },
+    validators: { 'user[email]':{"uniqueness":[{"message": "must be unique"}]}}
+  }
+
+  $('#qunit-fixture')
+    .append($('<form />', {
+      action: '/users',
+      'data-client-side-validations': JSON.stringify(dataCsv),
+      method: 'post',
+      id: 'new_user_3'
+    }))
+    .find('form')
+      .append($('<input />', {
+        name: 'profile[user_attributes][0][email]',
+        id: 'user_0_email',
+      }))
+      .append($('<input />', {
+        name: 'profile[user_attributes][1][email]',
+        id: 'user_1_email',
+      }));
+
+  $('form#new_user_3').validate();
+
+  var user_0_email = $('#user_0_email'),
+      user_1_email = $('#user_1_email'),
+      options = { 'message': "must be unique", "case_sensitive": true };
+
+  user_0_email.val('locally-unique');
+  user_1_email.val('Locally-Unique');
+
+  assert.equal(ClientSideValidations.validators.local.uniqueness(user_1_email, options), undefined);
+});
diff --git a/vendor/assets/javascripts/rails.validations.js b/vendor/assets/javascripts/rails.validations.js
index 37351e3e4..b84a5c643 100644
--- a/vendor/assets/javascripts/rails.validations.js
+++ b/vendor/assets/javascripts/rails.validations.js
@@ -535,8 +535,14 @@
               form = element.closest('form');
               valid = true;
               form.find(":input[name^=\"" + name_prefix + "\"][name$=\"" + name_suffix + "\"]").each(function() {
+                var other_value;
+                other_value = $(this).val();
+                if (!options.case_sensitive) {
+                  value = value.toLowerCase();
+                  other_value = other_value.toLowerCase();
+                }
                 if ($(this).attr('name') !== name) {
-                  if ($(this).val() === value) {
+                  if (other_value === value) {
                     valid = false;
                     return $(this).data('notLocallyUnique', true);
                   } else {