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 | 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 | public function __construct(string $name) |
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41 | { |
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42 | $this->fieldCollection = new FieldCollection(); |
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43 | $this->formRenderer = new FormRenderer(); |
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44 | 52 | $this->attributes = [ |
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45 | 'name' => $name, |
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46 | 52 | 'method' => self::METHOD_POST, |
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47 | 52 | ]; |
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48 | 52 | $this->displayErrors = false; |
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49 | 52 | $this->init(); |
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50 | 52 | } |
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51 | |||
52 | 52 | abstract public function init(); |
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53 | 52 | ||
54 | 52 | /** |
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55 | * @return bool |
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56 | * @throws \Exception |
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57 | */ |
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58 | public function isValid(): bool |
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59 | { |
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60 | $this->errorMessages = []; |
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61 | $fields = $this->fieldCollection; |
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62 | 10 | $this->validateFields($fields); |
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63 | $count = count($this->errorMessages); |
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64 | 10 | $valid = ($count == 0); |
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65 | 10 | if ($valid) { |
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66 | 10 | $this->moveUploadedFiles(); |
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67 | 10 | } |
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68 | 10 | return $valid; |
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69 | 10 | } |
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70 | 7 | ||
71 | public function getErrorMessages(): array |
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72 | 9 | { |
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73 | return $this->errorMessages; |
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74 | } |
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75 | 1 | ||
76 | /** |
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77 | 1 | * @param FieldCollection $fields |
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78 | * @throws \Exception |
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79 | */ |
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80 | private function validateFields(FieldCollection $fields): void |
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81 | { |
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82 | $fields->rewind(); |
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83 | while ($fields->valid()) { |
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84 | 10 | $this->checkFieldForErrors($fields->current()); |
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85 | $this->checkDynamicFormsForErrors($fields->current()); |
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86 | 10 | $fields->next(); |
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87 | 10 | } |
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88 | 10 | $fields->rewind(); |
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89 | 10 | } |
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90 | 10 | ||
91 | /** |
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92 | 10 | * @param FieldInterface $field |
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93 | 10 | * @throws \Exception |
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94 | */ |
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95 | private function checkFieldForErrors(FieldInterface $field): void |
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96 | { |
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97 | if (!$field->isValid()) { |
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98 | $this->errorMessages[$field->getName()] = $field->getMessages(); |
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99 | 10 | } |
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100 | } |
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101 | 10 | ||
102 | 8 | /** |
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103 | * @param FieldInterface $field |
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104 | 10 | */ |
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105 | public function checkDynamicFormsForErrors(FieldInterface $field): void |
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106 | { |
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107 | if ($field->hasDynamicForms()) { |
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108 | $forms = $field->getDynamicForms(); |
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109 | 10 | $value = $field->getValue(); |
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110 | if (isset($forms[$value])) { |
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111 | 10 | $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 | 1 | } |
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115 | 1 | } |
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116 | 1 | } |
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117 | 1 | ||
118 | /** |
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119 | * @param bool $transform |
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120 | 10 | * @return array |
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121 | */ |
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122 | public function getValues(bool $transform = false): array |
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123 | { |
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124 | $values = []; |
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125 | 5 | $fields = $this->fieldCollection; |
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126 | $values = $this->getFieldValues($fields, $values, $transform); |
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127 | 5 | ||
128 | 5 | return $values; |
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129 | 5 | } |
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130 | 5 | ||
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 | private function getFieldValues(FieldCollection $fields, array $values, bool $transform): array |
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138 | 5 | { |
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139 | $fields->rewind(); |
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140 | 5 | ||
141 | 5 | while ($fields->valid()) { |
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142 | /** @var FieldInterface $field */ |
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143 | 5 | $field = $fields->current(); |
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144 | 5 | $value = $field->getValue(); |
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145 | 5 | ||
146 | 5 | if ($transform && $field->hasTransformer()) { |
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147 | 1 | $value = $field->getTransformer()->output($value); |
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148 | 1 | } |
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149 | 1 | ||
150 | 1 | $values[$field->getName()] = $value; |
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151 | 1 | ||
152 | if ($field->hasDynamicForms()) { |
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153 | $forms = $field->getDynamicForms(); |
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154 | 5 | if (isset($forms[$value])) { |
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155 | $form = $forms[$value]; |
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156 | 5 | $dynamicFormFields = $form->getFields(); |
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157 | 5 | $values = $this->getFieldValues($dynamicFormFields, $values, $transform); |
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158 | } |
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159 | } |
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160 | |||
161 | $fields->next(); |
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162 | } |
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163 | |||
164 | 8 | $fields->rewind(); |
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165 | |||
166 | 8 | return $values; |
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167 | 8 | } |
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168 | 8 | ||
169 | 8 | /** |
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170 | * @param array $data |
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171 | */ |
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172 | public function populate(array $data): void |
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173 | { |
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174 | $fields = $this->fieldCollection; |
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175 | $this->populateFields($fields, $data); |
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176 | 2 | $this->displayErrors = true; |
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177 | } |
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178 | |||
179 | 2 | /** |
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180 | 2 | * @param array $dynamicForms |
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181 | 2 | * @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 $form **/ |
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186 | foreach ($dynamicForms as $form) { |
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187 | $fields = $form->getFields(); |
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188 | $this->populateFields($fields, $data); |
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189 | 8 | } |
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190 | } |
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191 | 8 | ||
192 | 8 | /** |
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193 | 8 | * @param FieldCollection $fields |
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194 | 8 | * @param array $data |
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195 | 8 | */ |
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196 | private function populateFields(FieldCollection $fields, array $data): void |
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197 | 8 | { |
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198 | 8 | $fields->rewind(); |
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199 | while ($fields->valid()) { |
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200 | $field = $fields->current(); |
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201 | $this->populateField($field, $data); |
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202 | $fields->next(); |
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203 | } |
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204 | 8 | $fields->rewind(); |
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205 | } |
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206 | 8 | ||
207 | 8 | /** |
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208 | 5 | * @param FieldInterface $field |
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209 | * @param array $data |
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210 | 8 | */ |
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211 | 2 | private function populateField(FieldInterface $field, array $data): void |
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212 | 2 | { |
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213 | $name = $field->getName(); |
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214 | 8 | ||
215 | if (isset($data[$name]) && $field->hasTransformer()) { |
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216 | $value = $field->getTransformer()->input($data[$name]); |
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217 | $field->setValue($value); |
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218 | } elseif (isset($data[$name])) { |
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219 | $field->setValue($data[$name]); |
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220 | 2 | } elseif ($field instanceof CheckBox) { |
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221 | $field->setValue(false); |
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222 | 2 | } |
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223 | |||
224 | if ($field->hasDynamicForms()) { |
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225 | $forms = $field->getDynamicForms(); |
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226 | $this->populateDynamicForms($forms, $data); |
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227 | } |
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228 | 34 | } |
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229 | |||
230 | 34 | /** |
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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 | public function getField(string $name): ?FieldInterface |
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235 | { |
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236 | return $this->fieldCollection->findByName($name); |
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237 | 43 | } |
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238 | |||
239 | 43 | /** |
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240 | 43 | * @return FieldCollection |
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241 | */ |
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242 | public function getFields(): FieldCollection |
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243 | { |
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244 | return $this->fieldCollection; |
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245 | } |
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246 | 30 | ||
247 | /** |
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248 | 30 | * @param FieldInterface $field |
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249 | */ |
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250 | public function addField(FieldInterface $field): void |
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251 | { |
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252 | $this->fieldCollection->append($field); |
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253 | } |
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254 | |||
255 | 2 | /** |
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256 | * @return string |
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257 | 2 | */ |
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258 | public function render(): string |
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259 | 2 | { |
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260 | 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 | 2 | */ |
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266 | public function setAction(string $url): void |
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267 | 2 | { |
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268 | $this->setAttribute('action', $url); |
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269 | } |
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270 | |||
271 | /** |
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272 | * @return string |
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273 | 31 | */ |
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274 | public function getAction(): string |
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275 | 31 | { |
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276 | 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 | 2 | public function getId(): ?string |
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283 | { |
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284 | 2 | return $this->getAttribute('id'); |
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285 | } |
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286 | 2 | ||
287 | /** |
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288 | * @param string $id |
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289 | */ |
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290 | public function setId(string $id): void |
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291 | { |
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292 | $this->setAttribute('id', $id); |
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293 | 2 | } |
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294 | |||
295 | 2 | /** |
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296 | * @param $encType |
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297 | 2 | */ |
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298 | public function setEncType(string $encType): void |
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299 | { |
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300 | $this->setAttribute('enctype', $encType); |
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301 | } |
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302 | |||
303 | 1 | /** |
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304 | * @return string |
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305 | 1 | */ |
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306 | public function getEncType(): string |
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310 | |||
311 | /** |
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312 | 2 | * @param string $method |
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313 | * @return FormInterface |
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314 | 2 | */ |
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315 | public function setMethod(string $method): void |
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316 | 2 | { |
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317 | $this->setAttribute('method', $method); |
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318 | } |
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319 | |||
320 | /** |
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321 | * @return string |
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322 | 31 | */ |
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323 | public function getMethod(): string |
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324 | 31 | { |
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325 | return $this->getAttribute('method'); |
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326 | } |
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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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332 | { |
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333 | 2 | $this->setAttribute('class', $class); |
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334 | } |
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335 | 2 | ||
336 | /** |
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337 | * @return string |
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338 | */ |
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339 | public function getClass(): string |
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343 | 2 | ||
344 | /** |
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345 | * @return boolean |
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346 | */ |
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347 | public function isDisplayErrors(): bool |
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351 | 31 | ||
352 | /** |
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353 | * @param boolean $displayError |
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354 | */ |
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355 | public function setDisplayErrors(bool $displayErrors): void |
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359 | |||
360 | 3 | /** |
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361 | * @param FormRendererInterface $renderer |
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362 | 3 | * @return AbstractForm |
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363 | */ |
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364 | public function setFormRenderer(FormRendererInterface $renderer): AbstractForm |
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370 | |||
371 | 5 | public function moveUploadedFiles(): void |
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380 | 7 | ||
381 | 7 | /** |
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382 | 6 | * @param FieldInterface $field |
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383 | * @return bool |
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384 | 6 | */ |
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385 | 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: