Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like MakeTable 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 MakeTable, and based on these observations, apply Extract Interface, too.
1 | <?php namespace EvolutionCMS\Support; |
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13 | class MakeTable implements MakeTableInterface |
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14 | { |
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15 | /** |
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16 | * @var string |
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17 | */ |
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18 | public $actionField = ''; |
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19 | /** |
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20 | * @var string |
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21 | */ |
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22 | public $cellAction = ''; |
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23 | /** |
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24 | * @var string |
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25 | */ |
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26 | public $linkAction = ''; |
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27 | /** |
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28 | * @var int |
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29 | */ |
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30 | public $tableWidth = 0; |
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31 | /** |
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32 | * @var string |
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33 | */ |
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34 | public $tableClass = ''; |
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35 | /** |
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36 | * @var |
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37 | */ |
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38 | public $tableID; |
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39 | /** |
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40 | * @var |
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41 | */ |
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42 | public $thClass; |
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43 | /** |
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44 | * @var string |
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45 | */ |
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46 | public $rowHeaderClass = ''; |
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47 | /** |
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48 | * @var string |
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49 | */ |
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50 | public $columnHeaderClass = ''; |
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51 | /** |
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52 | * @var string |
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53 | */ |
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54 | public $rowRegularClass = ''; |
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55 | /** |
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56 | * @var string |
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57 | */ |
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58 | public $rowAlternateClass = 'alt'; |
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59 | /** |
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60 | * @var string |
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61 | */ |
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62 | public $formName = 'tableForm'; |
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63 | /** |
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64 | * @var string |
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65 | */ |
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66 | public $formAction = '[~[*id*]~]'; |
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67 | /** |
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68 | * @var string |
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69 | */ |
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70 | public $formElementType = ''; |
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71 | /** |
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72 | * @var string |
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73 | */ |
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74 | public $formElementName = ''; |
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75 | /** |
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76 | * @var string |
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77 | */ |
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78 | public $rowAlternatingScheme = 'EVEN'; |
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79 | /** |
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80 | * @var array |
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81 | */ |
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82 | public $excludeFields = array(); |
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83 | /** |
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84 | * @var int |
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85 | */ |
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86 | public $allOption = 0; |
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87 | /** |
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88 | * @var |
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89 | */ |
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90 | public $pageNav; |
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91 | /** |
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92 | * @var array |
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93 | */ |
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94 | public $columnWidths = array(); |
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95 | /** |
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96 | * @var array |
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97 | */ |
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98 | public $selectedValues = array(); |
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99 | /** |
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100 | * @var array |
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101 | */ |
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102 | public $fieldHeaders = array(); |
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103 | /** |
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104 | * @var string |
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105 | */ |
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106 | public $extra = ''; |
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107 | |||
108 | /** |
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109 | * Sets the default link href for all cells in the table. |
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110 | * |
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111 | * @param string $value A URL to execute when table cells are clicked. |
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112 | */ |
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113 | public function setCellAction($value) |
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117 | |||
118 | /** |
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119 | * Sets the default link href for the text presented in a cell. |
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120 | * |
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121 | * @param string $value A URL to execute when text within table cells are clicked. |
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122 | */ |
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123 | public function setLinkAction($value) |
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127 | |||
128 | /** |
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129 | * Sets the width attribute of the main HTML TABLE. |
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130 | * |
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131 | * @param int $value A valid width attribute for the HTML TABLE tag |
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132 | */ |
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133 | public function setTableWidth($value) |
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137 | |||
138 | /** |
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139 | * Sets the class attribute of the main HTML TABLE. |
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140 | * |
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141 | * @param string $value A class for the main HTML TABLE. |
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142 | */ |
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143 | public function setTableClass($value) |
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147 | |||
148 | /** |
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149 | * Sets the id attribute of the main HTML TABLE. |
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150 | * |
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151 | * @param string $value A class for the main HTML TABLE. |
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152 | */ |
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153 | public function setTableID($value) |
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157 | |||
158 | /** |
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159 | * Sets the class attribute of the table header row. |
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160 | * |
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161 | * @param string $value A class for the table header row. |
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162 | */ |
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163 | public function setRowHeaderClass($value) |
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167 | |||
168 | /** |
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169 | * Sets the class attribute of the table header row. |
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170 | * |
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171 | * @param string $value A class for the table header row. |
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172 | */ |
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173 | public function setThHeaderClass($value) |
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177 | |||
178 | /** |
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179 | * Sets the class attribute of the column header row. |
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180 | * |
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181 | * @param string $value A class for the column header row. |
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182 | */ |
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183 | public function setColumnHeaderClass($value) |
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187 | |||
188 | /** |
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189 | * Sets the class attribute of regular table rows. |
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190 | * |
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191 | * @param string $value A class for regular table rows. |
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192 | */ |
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193 | public function setRowRegularClass($value) |
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197 | |||
198 | /** |
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199 | * Sets the class attribute of alternate table rows. |
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200 | * |
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201 | * @param string $value A class for alternate table rows. |
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202 | */ |
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203 | public function setRowAlternateClass($value) |
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207 | |||
208 | /** |
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209 | * Sets the type of INPUT form element to be presented as the first column. |
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210 | * |
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211 | * @param string $value Indicates the INPUT form element type attribute. |
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212 | */ |
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213 | public function setFormElementType($value) |
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217 | |||
218 | /** |
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219 | * Sets the name of the INPUT form element to be presented as the first column. |
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220 | * |
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221 | * @param string $value Indicates the INPUT form element name attribute. |
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222 | */ |
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223 | public function setFormElementName($value) |
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227 | |||
228 | /** |
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229 | * Sets the name of the FORM to wrap the table in when a form element has |
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230 | * been indicated. |
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231 | * |
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232 | * @param string $value Indicates the FORM name attribute. |
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233 | */ |
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234 | public function setFormName($value) |
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238 | |||
239 | /** |
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240 | * Sets the action of the FORM element. |
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241 | * |
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242 | * @param string $value Indicates the FORM action attribute. |
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243 | */ |
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244 | public function setFormAction($value) |
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248 | |||
249 | /** |
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250 | * Excludes fields from the table by array key. |
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251 | * |
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252 | * @param array $value An Array of field keys to exclude from the table. |
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253 | */ |
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254 | public function setExcludeFields($value) |
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258 | |||
259 | /** |
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260 | * Sets the table to provide alternate row colors using ODD or EVEN rows |
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261 | * |
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262 | * @param string $value 'ODD' or 'EVEN' to indicate the alternate row scheme. |
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263 | */ |
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264 | public function setRowAlternatingScheme($value) |
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268 | |||
269 | /** |
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270 | * Sets the default field value to be used when appending query parameters |
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271 | * to link actions. |
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272 | * |
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273 | * @param string $value The key of the field to add as a query string parameter. |
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274 | */ |
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275 | public function setActionFieldName($value) |
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279 | |||
280 | /** |
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281 | * Sets the width attribute of each column in the array. |
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282 | * |
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283 | * @param array $value An Array of column widths in the order of the keys in the |
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284 | * source table array. |
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285 | */ |
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286 | public function setColumnWidths($widthArray) |
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290 | |||
291 | /** |
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292 | * An optional array of values that can be preselected when using |
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293 | * |
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294 | * @param array $value Indicates the INPUT form element type attribute. |
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295 | */ |
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296 | public function setSelectedValues($valueArray) |
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300 | |||
301 | /** |
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302 | * Sets extra content to be presented following the table (but within |
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303 | * the form, if a form is being rendered with the table). |
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304 | * |
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305 | * @param string $value A string of additional content. |
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306 | */ |
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307 | public function setExtra($value) |
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311 | |||
312 | /** |
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313 | * Retrieves the width of a specific table column by index position. |
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314 | * |
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315 | * @param int $columnPosition The index of the column to get the width for. |
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316 | * @return string |
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317 | */ |
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318 | public function getColumnWidth($columnPosition) |
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327 | |||
328 | /** |
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329 | * Determines what class the current row should have applied. |
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330 | * |
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331 | * @param int $value The position of the current row being rendered. |
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332 | * @return string |
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333 | */ |
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334 | public function determineRowClass($position) |
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353 | |||
354 | /** |
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355 | * Generates an onclick action applied to the current cell, to execute |
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356 | * any specified cell actions. |
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357 | * |
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358 | * @param string $value Indicates the INPUT form element type attribute. |
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359 | * @return string |
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360 | */ |
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361 | View Code Duplication | public function getCellAction($currentActionFieldValue) |
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370 | |||
371 | /** |
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372 | * Generates the cell content, including any specified action fields values. |
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373 | * |
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374 | * @param string $currentActionFieldValue The value to be applied to the link action. |
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375 | * @param string $value The value of the cell. |
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376 | * @return string |
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377 | */ |
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378 | View Code Duplication | public function createCellText($currentActionFieldValue, $value) |
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387 | |||
388 | /** |
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389 | * Sets an option to generate a check all link when checkbox is indicated |
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390 | * as the table formElementType. |
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391 | */ |
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392 | public function setAllOption() |
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396 | |||
397 | /** |
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398 | * Function to prepare a link generated in the table cell/link actions. |
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399 | * |
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400 | * @param string $value Indicates the INPUT form element type attribute. |
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401 | * @return string |
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402 | */ |
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403 | public function prepareLink($link) |
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413 | |||
414 | /** |
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415 | * Generates the table content. |
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416 | * |
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417 | * @param array $fieldsArray The associative array representing the table rows |
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418 | * and columns. |
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419 | * @param array $fieldHeadersArray An optional array of values for providing |
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420 | * alternative field headers; this is an associative arrays of keys from |
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421 | * the $fieldsArray where the values represent the alt heading content |
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422 | * for each column. |
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423 | * @return string |
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424 | */ |
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425 | public function create($fieldsArray, $fieldHeadersArray = array(), $linkpage = "") |
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507 | |||
508 | /** |
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509 | * Generates optional paging navigation controls for the table. |
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510 | * |
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511 | * @param int $numRecords The number of records to show per page. |
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512 | * @param string $qs An optional query string to be appended to the paging links |
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513 | * @return void |
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514 | */ |
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515 | public function createPagingNavigation($numRecords, $qs = '') |
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549 | |||
550 | /** |
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551 | * Creates an individual page link for the paging navigation. |
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552 | * |
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553 | * @param string $link The link for the page, defaulted to the current document. |
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554 | * @param int $pageNum The page number of the link. |
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555 | * @param string $displayText The text of the link. |
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556 | * @param bool $currentPage Indicates if the link is to the current page. |
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557 | * @param string $qs And optional query string to be appended to the link. |
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558 | * @return string |
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559 | */ |
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560 | public function createPageLink($link = '', $pageNum, $displayText, $currentPage = false, $qs = '') |
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574 | |||
575 | /** |
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576 | * Adds an INPUT form element column to the table. |
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577 | * |
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578 | * @param string $value The value attribute of the element. |
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579 | * @param bool $isChecked Indicates if the checked attribute should apply to the |
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580 | * element. |
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581 | * @return string |
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582 | */ |
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583 | public function addFormField($value, $isChecked) |
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593 | |||
594 | /** |
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595 | * Generates the proper LIMIT clause for queries to retrieve paged results in |
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596 | * a MakeTable $fieldsArray. |
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597 | * @return string |
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598 | */ |
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599 | public function handlePaging() |
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606 | |||
607 | /** |
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608 | * Generates the SORT BY clause for queries used to retrieve a MakeTable |
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609 | * $fieldsArray |
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610 | * |
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611 | * @param bool $natural_order If true, the results are returned in natural order. |
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612 | * @return string |
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613 | */ |
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614 | public function handleSorting($natural_order = false) |
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625 | |||
626 | /** |
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627 | * Generates a link to order by a specific $fieldsArray key; use to generate |
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628 | * sort by links in the MakeTable $fieldHeadingsArray values. |
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629 | * |
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630 | * @param string $key The $fieldsArray key for the column to sort by. |
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631 | * @param string $text The text for the link (e.g. table column header). |
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632 | * @param string $qs An optional query string to append to the order by link. |
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633 | * @return string |
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634 | */ |
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635 | public function prepareOrderByLink($key, $text, $qs = '') |
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651 | |||
652 | } |
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653 |
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.