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1 | 1 | import 'package:flutter/material.dart';
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2 | 2 | import 'package:form_builder_validators/form_builder_validators.dart';
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3 | 3 |
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4 |
| -class HomePage extends StatefulWidget { |
| 4 | +class HomePage extends StatelessWidget { |
5 | 5 | const HomePage({super.key});
|
6 | 6 |
|
7 |
| - @override |
8 |
| - HomePageState createState() => HomePageState(); |
9 |
| -} |
10 |
| - |
11 |
| -class HomePageState extends State<HomePage> { |
12 | 7 | @override
|
13 | 8 | Widget build(BuildContext context) {
|
14 | 9 | return Scaffold(
|
15 | 10 | appBar: AppBar(title: const Text('Form Builder Validators')),
|
16 | 11 | body: Padding(
|
17 | 12 | padding: const EdgeInsets.all(8),
|
18 |
| - child: Column( |
19 |
| - children: <Widget>[ |
20 |
| - TextFormField( |
21 |
| - decoration: const InputDecoration(labelText: 'Name'), |
22 |
| - validator: FormBuilderValidators.required(), |
23 |
| - autovalidateMode: AutovalidateMode.always, |
24 |
| - ), |
| 13 | + child: SingleChildScrollView( |
| 14 | + child: Column( |
| 15 | + children: <Widget>[ |
| 16 | + // Composing multiple validators |
| 17 | + TextFormField( |
| 18 | + decoration: const InputDecoration(labelText: 'Age'), |
| 19 | + keyboardType: TextInputType.number, |
| 20 | + autovalidateMode: AutovalidateMode.always, |
| 21 | + validator: FormBuilderValidators.compose([ |
| 22 | + /// Makes this field required |
| 23 | + FormBuilderValidators.required(), |
25 | 24 |
|
26 |
| - // Composing multiple validators |
27 |
| - TextFormField( |
28 |
| - decoration: const InputDecoration(labelText: 'Age'), |
29 |
| - keyboardType: TextInputType.number, |
30 |
| - autovalidateMode: AutovalidateMode.always, |
31 |
| - validator: FormBuilderValidators.compose([ |
32 |
| - /// Makes this field required |
33 |
| - FormBuilderValidators.required(), |
| 25 | + /// Ensures the value entered is numeric - with custom error message |
| 26 | + FormBuilderValidators.numeric( |
| 27 | + errorText: 'La edad debe ser numérica.', |
| 28 | + ), |
34 | 29 |
|
35 |
| - /// Ensures the value entered is numeric - with custom error message |
36 |
| - FormBuilderValidators.numeric( |
37 |
| - errorText: 'La edad debe ser numérica.', |
38 |
| - ), |
39 |
| - |
40 |
| - /// Sets a maximum value of 70 |
41 |
| - FormBuilderValidators.max(70), |
| 30 | + /// Sets a maximum value of 70 |
| 31 | + FormBuilderValidators.max(70), |
42 | 32 |
|
43 |
| - /// Include your own custom `FormFieldValidator` function, if you want |
44 |
| - /// Ensures positive values only. We could also have used `FormBuilderValidators.min( 0)` instead |
45 |
| - (val) { |
46 |
| - if (val != null) { |
47 |
| - final number = int.tryParse(val); |
48 |
| - if (number == null) return null; |
49 |
| - if (number < 0) return 'We cannot have a negative age'; |
| 33 | + /// Include your own custom `FormFieldValidator` function, if you want |
| 34 | + /// Ensures positive values only. We could also have used `FormBuilderValidators.min( 0)` instead |
| 35 | + (val) { |
| 36 | + if (val != null) { |
| 37 | + final number = int.tryParse(val); |
| 38 | + if (number == null) return null; |
| 39 | + if (number < 0) return 'We cannot have a negative age'; |
| 40 | + } |
| 41 | + return null; |
50 | 42 | }
|
51 |
| - return null; |
52 |
| - } |
53 |
| - ]), |
54 |
| - ), |
55 |
| - ], |
| 43 | + ]), |
| 44 | + ), |
| 45 | + // Required Validator |
| 46 | + TextFormField( |
| 47 | + decoration: const InputDecoration( |
| 48 | + labelText: 'Required Field', |
| 49 | + prefixIcon: Icon(Icons.star), |
| 50 | + ), |
| 51 | + validator: FormBuilderValidators.required(), |
| 52 | + autofillHints: const [AutofillHints.name], |
| 53 | + textInputAction: TextInputAction.next, |
| 54 | + autovalidateMode: AutovalidateMode.always, |
| 55 | + ), |
| 56 | + // Numeric Validator |
| 57 | + TextFormField( |
| 58 | + decoration: const InputDecoration( |
| 59 | + labelText: 'Numeric Field', |
| 60 | + prefixIcon: Icon(Icons.numbers), |
| 61 | + ), |
| 62 | + keyboardType: TextInputType.number, |
| 63 | + validator: FormBuilderValidators.numeric(), |
| 64 | + autofillHints: const [AutofillHints.oneTimeCode], |
| 65 | + textInputAction: TextInputAction.next, |
| 66 | + autovalidateMode: AutovalidateMode.always, |
| 67 | + ), |
| 68 | + // Email Validator |
| 69 | + TextFormField( |
| 70 | + decoration: const InputDecoration( |
| 71 | + labelText: 'Email Field', |
| 72 | + prefixIcon: Icon(Icons.email), |
| 73 | + ), |
| 74 | + keyboardType: TextInputType.emailAddress, |
| 75 | + validator: FormBuilderValidators.email(), |
| 76 | + autofillHints: const [AutofillHints.email], |
| 77 | + textInputAction: TextInputAction.next, |
| 78 | + autovalidateMode: AutovalidateMode.always, |
| 79 | + ), |
| 80 | + // URL Validator |
| 81 | + TextFormField( |
| 82 | + decoration: const InputDecoration( |
| 83 | + labelText: 'URL Field', |
| 84 | + prefixIcon: Icon(Icons.link), |
| 85 | + ), |
| 86 | + keyboardType: TextInputType.url, |
| 87 | + validator: FormBuilderValidators.url(), |
| 88 | + autofillHints: const [AutofillHints.url], |
| 89 | + textInputAction: TextInputAction.next, |
| 90 | + autovalidateMode: AutovalidateMode.always, |
| 91 | + ), |
| 92 | + // Min Length Validator |
| 93 | + TextFormField( |
| 94 | + decoration: const InputDecoration( |
| 95 | + labelText: 'Min Length Field', |
| 96 | + prefixIcon: Icon(Icons.text_fields), |
| 97 | + ), |
| 98 | + validator: FormBuilderValidators.minLength(5), |
| 99 | + textInputAction: TextInputAction.next, |
| 100 | + autovalidateMode: AutovalidateMode.always, |
| 101 | + ), |
| 102 | + // Max Length Validator |
| 103 | + TextFormField( |
| 104 | + decoration: const InputDecoration( |
| 105 | + labelText: 'Max Length Field', |
| 106 | + prefixIcon: Icon(Icons.text_fields), |
| 107 | + ), |
| 108 | + validator: FormBuilderValidators.maxLength(10), |
| 109 | + textInputAction: TextInputAction.next, |
| 110 | + autovalidateMode: AutovalidateMode.always, |
| 111 | + ), |
| 112 | + // Min Validator |
| 113 | + TextFormField( |
| 114 | + decoration: const InputDecoration( |
| 115 | + labelText: 'Min Value Field', |
| 116 | + prefixIcon: Icon(Icons.exposure_neg_1), |
| 117 | + ), |
| 118 | + keyboardType: TextInputType.number, |
| 119 | + validator: FormBuilderValidators.min(10), |
| 120 | + textInputAction: TextInputAction.next, |
| 121 | + autovalidateMode: AutovalidateMode.always, |
| 122 | + ), |
| 123 | + // Max Validator |
| 124 | + TextFormField( |
| 125 | + decoration: const InputDecoration( |
| 126 | + labelText: 'Max Value Field', |
| 127 | + prefixIcon: Icon(Icons.exposure_plus_1), |
| 128 | + ), |
| 129 | + keyboardType: TextInputType.number, |
| 130 | + validator: FormBuilderValidators.max(100), |
| 131 | + textInputAction: TextInputAction.next, |
| 132 | + autovalidateMode: AutovalidateMode.always, |
| 133 | + ), |
| 134 | + // Equal Validator |
| 135 | + TextFormField( |
| 136 | + decoration: const InputDecoration( |
| 137 | + labelText: 'Equal Field', |
| 138 | + prefixIcon: Icon(Icons.check), |
| 139 | + ), |
| 140 | + validator: FormBuilderValidators.equal('test'), |
| 141 | + textInputAction: TextInputAction.next, |
| 142 | + autovalidateMode: AutovalidateMode.always, |
| 143 | + ), |
| 144 | + // Contains Validator |
| 145 | + TextFormField( |
| 146 | + decoration: const InputDecoration( |
| 147 | + labelText: 'Contains "test"', |
| 148 | + prefixIcon: Icon(Icons.search), |
| 149 | + ), |
| 150 | + validator: FormBuilderValidators.contains(substring: 'test'), |
| 151 | + textInputAction: TextInputAction.next, |
| 152 | + autovalidateMode: AutovalidateMode.always, |
| 153 | + ), |
| 154 | + // Match Validator |
| 155 | + TextFormField( |
| 156 | + decoration: const InputDecoration( |
| 157 | + labelText: 'Match Pattern', |
| 158 | + prefixIcon: Icon(Icons.pattern), |
| 159 | + ), |
| 160 | + validator: FormBuilderValidators.match(r'^[a-zA-Z0-9]+$'), |
| 161 | + textInputAction: TextInputAction.next, |
| 162 | + autovalidateMode: AutovalidateMode.always, |
| 163 | + ), |
| 164 | + // IP Validator |
| 165 | + TextFormField( |
| 166 | + decoration: const InputDecoration( |
| 167 | + labelText: 'IP Field', |
| 168 | + prefixIcon: Icon(Icons.computer), |
| 169 | + ), |
| 170 | + keyboardType: TextInputType.number, |
| 171 | + validator: FormBuilderValidators.ip(), |
| 172 | + textInputAction: TextInputAction.next, |
| 173 | + autovalidateMode: AutovalidateMode.always, |
| 174 | + ), |
| 175 | + // UUID Validator |
| 176 | + TextFormField( |
| 177 | + decoration: const InputDecoration( |
| 178 | + labelText: 'UUID Field', |
| 179 | + prefixIcon: Icon(Icons.code), |
| 180 | + ), |
| 181 | + validator: FormBuilderValidators.uuid(), |
| 182 | + textInputAction: TextInputAction.next, |
| 183 | + autovalidateMode: AutovalidateMode.always, |
| 184 | + ), |
| 185 | + // Credit Card Validator |
| 186 | + TextFormField( |
| 187 | + decoration: const InputDecoration( |
| 188 | + labelText: 'Credit Card Field', |
| 189 | + prefixIcon: Icon(Icons.credit_card), |
| 190 | + ), |
| 191 | + keyboardType: TextInputType.number, |
| 192 | + validator: FormBuilderValidators.creditCard(), |
| 193 | + autofillHints: const [AutofillHints.creditCardNumber], |
| 194 | + textInputAction: TextInputAction.next, |
| 195 | + autovalidateMode: AutovalidateMode.always, |
| 196 | + ), |
| 197 | + // Phone Number Validator |
| 198 | + TextFormField( |
| 199 | + decoration: const InputDecoration( |
| 200 | + labelText: 'Phone Number Field', |
| 201 | + prefixIcon: Icon(Icons.phone), |
| 202 | + ), |
| 203 | + keyboardType: TextInputType.phone, |
| 204 | + validator: FormBuilderValidators.phoneNumber(), |
| 205 | + autofillHints: const [AutofillHints.telephoneNumber], |
| 206 | + textInputAction: TextInputAction.next, |
| 207 | + autovalidateMode: AutovalidateMode.always, |
| 208 | + ), |
| 209 | + // Password Validator |
| 210 | + TextFormField( |
| 211 | + decoration: const InputDecoration( |
| 212 | + labelText: 'Password Field', |
| 213 | + prefixIcon: Icon(Icons.lock), |
| 214 | + ), |
| 215 | + obscureText: true, |
| 216 | + validator: FormBuilderValidators.password(), |
| 217 | + autofillHints: const [AutofillHints.password], |
| 218 | + textInputAction: TextInputAction.done, |
| 219 | + autovalidateMode: AutovalidateMode.always, |
| 220 | + ), |
| 221 | + // Custom Validators Example |
| 222 | + TextFormField( |
| 223 | + decoration: const InputDecoration( |
| 224 | + labelText: 'Custom Age Validator', |
| 225 | + prefixIcon: Icon(Icons.calendar_today), |
| 226 | + ), |
| 227 | + keyboardType: TextInputType.number, |
| 228 | + validator: FormBuilderValidators.compose([ |
| 229 | + FormBuilderValidators.required(), |
| 230 | + FormBuilderValidators.numeric(), |
| 231 | + FormBuilderValidators.min(0), |
| 232 | + FormBuilderValidators.max(120), |
| 233 | + ]), |
| 234 | + textInputAction: TextInputAction.done, |
| 235 | + autovalidateMode: AutovalidateMode.always, |
| 236 | + ), |
| 237 | + ], |
| 238 | + ), |
56 | 239 | ),
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57 | 240 | ),
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58 | 241 | );
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