質問編集履歴
1
エラーに関わる範囲のコードを追記
test
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test
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@@ -71,3 +71,125 @@
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71
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Swiftのバージョンは3.0で、Realmのバージョンは2.0.0です。
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72
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どなたかわかる方がいれば教えていただきたいです。よろしくお願いします。
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74
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75
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76
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78
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79
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///追記///
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80
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81
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82
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83
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エラーに関わる範囲のコードを追記しました。
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84
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85
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86
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87
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```Swift
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88
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89
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// MARK: - IBAction
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90
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91
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92
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93
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@IBAction func addNewUser(_ sender: AnyObject) {
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94
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95
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self.showAddNewUserAlert()
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96
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97
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}
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98
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99
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100
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101
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// MARK: - alertController
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102
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103
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104
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105
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func showAddNewUserAlert() {
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106
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107
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let alert:UIAlertController = UIAlertController(title:"登録", message: "名前を入力してね", preferredStyle: UIAlertControllerStyle.alert)
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108
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109
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okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler:{ (action:UIAlertAction!) -> Void in
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110
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111
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let textField = alert.textFields![0]
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112
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113
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114
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115
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if self.checkHasSameUserNameInDatabase(textField.text!) { //エラーが出るメソッド
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116
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117
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let user = User()
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118
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119
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user.name = textField.text!
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120
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121
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UserManager.sharedManager.insertUser(user)
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122
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123
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UserManager.sharedManager.users.append(user)
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124
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125
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126
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127
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let indexPath = IndexPath(row: UserManager.sharedManager.users.count - 1, section: 0)
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128
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129
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self.tableView.insertRows(at: [indexPath], with: UITableViewRowAnimation.automatic)
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130
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131
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} else {
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132
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133
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self.showFailureAlert()
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134
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135
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}
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136
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137
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})
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138
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139
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140
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141
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let cancelAction:UIAlertAction = UIAlertAction(title: "キャンセル",
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142
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style: UIAlertActionStyle.cancel, handler:{
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144
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145
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(action:UIAlertAction!) -> Void in
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146
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147
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})
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148
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149
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okAction.isEnabled = false
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150
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151
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alert.addAction(cancelAction)
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152
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153
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alert.addAction(okAction)
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154
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155
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156
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157
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alert.addTextField(configurationHandler: {(text:UITextField!) -> Void in
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158
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159
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text.placeholder = "名前"
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160
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161
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text.delegate = self
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162
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163
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})
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164
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165
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present(alert, animated: true, completion: nil)
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166
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167
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}
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168
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169
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170
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171
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func checkHasSameUserNameInDatabase(_ name: String!) -> Bool {
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172
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173
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let realm = try! Realm()
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174
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175
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let predicate = NSPredicate(format: "name = %@", name)
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176
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177
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let users = realm.objects(User.self).filter(predicate) //ここでエラーが出る
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178
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179
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180
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181
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if users.count == 0 {
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182
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183
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return false
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184
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185
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} else {
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186
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187
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return true
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188
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189
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}
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190
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191
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}
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194
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195
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```
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