Complex classes like AbstractForm often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use AbstractForm, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | abstract class AbstractForm implements FormInterface |
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| 14 | {
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| 15 | const ENC_TYPE_MULTIPART_FORM_DATA = 'multipart/form-data'; |
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| 16 | const ENC_TYPE_URL_ENCODED = 'application/x-www-form-urlencoded'; |
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| 17 | const ENC_TYPE_TEXT_PLAIN = 'text/plain'; |
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| 18 | |||
| 19 | const METHOD_POST = 'post'; |
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| 20 | const METHOD_GET = 'get'; |
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| 21 | |||
| 22 | /** @var FieldCollection $fieldCollection */ |
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| 23 | private $fieldCollection; |
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| 24 | |||
| 25 | /** @var FormRendererInterface */ |
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| 26 | private $formRenderer; |
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| 27 | |||
| 28 | /** @var array $errorMessages */ |
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| 29 | private $errorMessages; |
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| 30 | |||
| 31 | /** @var bool $displayErrors */ |
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| 32 | private $displayErrors; |
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| 33 | |||
| 34 | 1 | use HasAttributesTrait; |
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| 35 | |||
| 36 | /** |
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| 37 | * AbstractForm constructor. |
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| 38 | * @param $name |
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| 39 | */ |
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| 40 | 61 | public function __construct(string $name) |
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| 41 | {
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| 42 | 61 | $this->fieldCollection = new FieldCollection(); |
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| 43 | 61 | $this->formRenderer = new FormRenderer(); |
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| 44 | $this->attributes = [ |
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| 45 | 61 | 'name' => $name, |
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| 46 | 61 | 'method' => self::METHOD_POST, |
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| 47 | ]; |
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| 48 | 61 | $this->displayErrors = false; |
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| 49 | 61 | $this->init(); |
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| 50 | 61 | } |
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| 51 | |||
| 52 | abstract public function init(); |
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| 53 | |||
| 54 | /** |
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| 55 | * @return bool |
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| 56 | * @throws \Exception |
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| 57 | */ |
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| 58 | 14 | public function isValid(): bool |
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| 59 | {
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| 60 | 14 | $this->errorMessages = []; |
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| 61 | 14 | $fields = $this->fieldCollection; |
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| 62 | 14 | $this->validateFields($fields); |
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| 63 | 14 | $count = count($this->errorMessages); |
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| 64 | 14 | $valid = ($count == 0); |
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| 65 | 14 | if ($valid) {
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| 66 | 8 | $this->moveUploadedFiles(); |
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| 67 | } |
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| 68 | 13 | return $valid; |
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| 69 | } |
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| 70 | |||
| 71 | 3 | public function getErrorMessages(): array |
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| 72 | {
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| 73 | 3 | return $this->errorMessages; |
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| 74 | } |
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| 75 | |||
| 76 | /** |
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| 77 | * @param FieldCollection $fields |
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| 78 | * @throws \Exception |
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| 79 | */ |
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| 80 | 14 | private function validateFields(FieldCollection $fields): void |
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| 81 | {
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| 82 | 14 | $fields->rewind(); |
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| 83 | 14 | while ($fields->valid()) {
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| 84 | 14 | $this->checkFieldForErrors($fields->current()); |
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| 85 | 14 | $this->checkDynamicFormsForErrors($fields->current()); |
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| 86 | 14 | $fields->next(); |
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| 87 | } |
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| 88 | 14 | $fields->rewind(); |
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| 89 | 14 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * @param FieldInterface $field |
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| 93 | * @throws \Exception |
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| 94 | */ |
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| 95 | 14 | private function checkFieldForErrors(FieldInterface $field): void |
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| 96 | {
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| 97 | 14 | if (!$field->isValid()) {
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| 98 | 12 | $this->errorMessages[$field->getName()] = $field->getMessages(); |
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| 99 | } |
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| 100 | 14 | } |
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| 101 | |||
| 102 | /** |
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| 103 | * @param FieldInterface $field |
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| 104 | */ |
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| 105 | 14 | public function checkDynamicFormsForErrors(FieldInterface $field): void |
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| 106 | {
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| 107 | 14 | if ($field->hasDynamicForms()) {
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| 108 | 1 | $forms = $field->getDynamicForms(); |
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| 109 | 1 | $value = $field->getValue(); |
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| 110 | 1 | if (isset($forms[$value])) {
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| 111 | 1 | $form = $forms[$value]; |
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| 112 | 1 | $fields = $form->getFields(); |
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| 113 | 1 | $this->validateFields($fields); |
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| 114 | } |
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| 115 | } |
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| 116 | 14 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * @param bool $transform |
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| 120 | * @return array |
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| 121 | */ |
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| 122 | 7 | public function getValues(bool $transform = false): array |
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| 123 | {
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| 124 | 7 | $values = []; |
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| 125 | 7 | $fields = $this->fieldCollection; |
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| 126 | 7 | $values = $this->getFieldValues($fields, $values, $transform); |
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| 127 | |||
| 128 | 7 | return $values; |
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| 129 | } |
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| 130 | |||
| 131 | /** |
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| 132 | * @param FieldCollection $fields |
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| 133 | * @param array $values |
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| 134 | * @param bool $transform |
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| 135 | * @return array |
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| 136 | */ |
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| 137 | 7 | private function getFieldValues(FieldCollection $fields, array $values, bool $transform): array |
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| 138 | {
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| 139 | 7 | $fields->rewind(); |
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| 140 | |||
| 141 | 7 | while ($fields->valid()) {
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| 142 | /** @var FieldInterface $field */ |
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| 143 | 7 | $field = $fields->current(); |
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| 144 | 7 | $value = $field->getValue(); |
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| 145 | |||
| 146 | 7 | if ($transform && $field->hasTransformer()) {
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| 147 | 2 | $value = $field->getTransformer()->output($value); |
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| 148 | } |
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| 149 | |||
| 150 | 7 | $values[$field->getName()] = $value; |
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| 151 | |||
| 152 | 7 | if ($field->hasDynamicForms()) {
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| 153 | 1 | $forms = $field->getDynamicForms(); |
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| 154 | 1 | if (isset($forms[$value])) {
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| 155 | 1 | $form = $forms[$value]; |
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| 156 | 1 | $dynamicFormFields = $form->getFields(); |
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| 157 | 1 | $values = $this->getFieldValues($dynamicFormFields, $values, $transform); |
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| 158 | } |
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| 159 | } |
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| 160 | |||
| 161 | 7 | $fields->next(); |
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| 162 | } |
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| 163 | |||
| 164 | 7 | $fields->rewind(); |
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| 165 | |||
| 166 | 7 | return $values; |
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| 167 | } |
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| 168 | |||
| 169 | /** |
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| 170 | * @param array $data |
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| 171 | */ |
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| 172 | 14 | public function populate(array $data): void |
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| 173 | {
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| 174 | 14 | $fields = $this->fieldCollection; |
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| 175 | 14 | $this->populateFields($fields, $data); |
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| 176 | 14 | $this->displayErrors = true; |
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| 177 | 14 | } |
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| 178 | |||
| 179 | /** |
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| 180 | * @param array $dynamicForms |
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| 181 | * @param array $data |
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| 182 | */ |
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| 183 | 2 | private function populateDynamicForms(array $dynamicForms, array $data): void |
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| 184 | {
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| 185 | /** @var FormInterface $form **/ |
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| 186 | 2 | foreach ($dynamicForms as $form) {
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| 187 | 2 | $fields = $form->getFields(); |
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| 188 | 2 | $this->populateFields($fields, $data); |
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| 189 | } |
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| 190 | 2 | } |
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| 191 | |||
| 192 | /** |
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| 193 | * @param FieldCollection $fields |
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| 194 | * @param array $data |
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| 195 | */ |
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| 196 | 14 | private function populateFields(FieldCollection $fields, array $data): void |
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| 197 | {
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| 198 | 14 | $fields->rewind(); |
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| 199 | 14 | while ($fields->valid()) {
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| 200 | 14 | $field = $fields->current(); |
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| 201 | 14 | $this->populateField($field, $data); |
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| 202 | 14 | $fields->next(); |
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| 203 | } |
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| 204 | 14 | $fields->rewind(); |
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| 205 | 14 | } |
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| 206 | |||
| 207 | /** |
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| 208 | * @param FieldInterface $field |
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| 209 | * @param array $data |
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| 210 | */ |
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| 211 | 14 | private function populateField(FieldInterface $field, array $data): void |
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| 212 | {
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| 213 | 14 | $name = $field->getName(); |
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| 214 | |||
| 215 | 14 | if (isset($data[$name]) && $field->hasTransformer()) {
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| 216 | 2 | $value = $field->getTransformer()->input($data[$name]); |
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| 217 | 2 | $field->setValue($value); |
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| 218 | 12 | } elseif (isset($data[$name])) {
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| 219 | 8 | $field->setValue($data[$name]); |
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| 220 | 7 | } elseif ($field instanceof CheckBox) {
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| 221 | 1 | $field->setValue(false); |
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| 222 | } |
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| 223 | |||
| 224 | 14 | if ($field->hasDynamicForms()) {
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| 225 | 2 | $forms = $field->getDynamicForms(); |
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| 226 | 2 | $this->populateDynamicForms($forms, $data); |
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| 227 | } |
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| 228 | 14 | } |
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| 229 | |||
| 230 | /** |
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| 231 | * @param string $name |
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| 232 | * @return FieldInterface|null |
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| 233 | */ |
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| 234 | 2 | public function getField(string $name): ?FieldInterface |
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| 235 | {
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| 236 | 2 | return $this->fieldCollection->findByName($name); |
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| 237 | } |
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| 238 | |||
| 239 | /** |
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| 240 | * @return FieldCollection |
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| 241 | */ |
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| 242 | 37 | public function getFields(): FieldCollection |
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| 243 | {
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| 244 | 37 | return $this->fieldCollection; |
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| 245 | } |
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| 246 | |||
| 247 | /** |
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| 248 | * @param FieldInterface $field |
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| 249 | */ |
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| 250 | 52 | public function addField(FieldInterface $field): void |
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| 251 | {
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| 252 | 52 | $this->fieldCollection->append($field); |
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| 253 | 52 | } |
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| 254 | |||
| 255 | /** |
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| 256 | * @return string |
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| 257 | */ |
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| 258 | 32 | public function render(): string |
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| 259 | {
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| 260 | 32 | return $this->formRenderer->render($this, $this->isDisplayErrors()); |
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| 261 | } |
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| 262 | |||
| 263 | /** |
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| 264 | * @param $url |
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| 265 | */ |
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| 266 | 2 | public function setAction(string $url): void |
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| 267 | {
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| 268 | 2 | $this->setAttribute('action', $url);
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| 269 | 2 | } |
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| 270 | |||
| 271 | /** |
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| 272 | * @return string |
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| 273 | */ |
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| 274 | 2 | public function getAction(): string |
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| 275 | {
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| 276 | 2 | return $this->getAttribute('action');
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| 277 | } |
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| 278 | |||
| 279 | /** |
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| 280 | * @return string |
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| 281 | */ |
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| 282 | 33 | public function getId(): ?string |
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| 286 | |||
| 287 | /** |
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| 288 | * @param string $id |
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| 289 | */ |
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| 290 | 2 | public function setId(string $id): void |
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| 291 | {
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| 292 | 2 | $this->setAttribute('id', $id);
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| 293 | 2 | } |
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| 294 | |||
| 295 | /** |
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| 296 | * @param $encType |
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| 297 | */ |
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| 298 | 2 | public function setEncType(string $encType): void |
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| 299 | {
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| 300 | 2 | $this->setAttribute('enctype', $encType);
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| 301 | 2 | } |
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| 302 | |||
| 303 | /** |
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| 304 | * @return string |
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| 305 | */ |
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| 306 | 1 | public function getEncType(): string |
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| 310 | |||
| 311 | /** |
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| 312 | * @param string $method |
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| 313 | * @return FormInterface |
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| 314 | */ |
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| 315 | 2 | public function setMethod(string $method): void |
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| 319 | |||
| 320 | /** |
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| 321 | * @return string |
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| 322 | */ |
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| 323 | 33 | public function getMethod(): string |
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| 327 | |||
| 328 | /** |
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| 329 | * @param $class |
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| 330 | */ |
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| 331 | 2 | public function setClass(string $class): void |
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| 335 | |||
| 336 | /** |
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| 337 | * @return string |
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| 338 | */ |
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| 339 | 2 | public function getClass(): string |
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| 343 | |||
| 344 | /** |
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| 345 | * @return boolean |
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| 346 | */ |
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| 347 | 33 | public function isDisplayErrors(): bool |
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| 351 | |||
| 352 | /** |
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| 353 | * @param boolean $displayError |
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| 354 | */ |
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| 355 | 3 | public function setDisplayErrors(bool $displayErrors): void |
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| 359 | |||
| 360 | /** |
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| 361 | * @param FormRendererInterface $renderer |
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| 362 | * @return AbstractForm |
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| 363 | */ |
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| 364 | 5 | public function setFormRenderer(FormRendererInterface $renderer): AbstractForm |
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| 370 | |||
| 371 | 8 | public function moveUploadedFiles(): void |
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| 380 | |||
| 381 | /** |
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| 382 | * @param FieldInterface $field |
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| 383 | * @return bool |
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| 384 | */ |
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| 385 | 8 | public function moveFileIfUploadField(FieldInterface $field): bool |
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| 393 | } |
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: