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:
| 1 | <?php |
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| 8 | class GSTTaxModifierOptions extends DataObject |
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| 9 | { |
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| 10 | |||
| 11 | /** |
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| 12 | * standard SS variable |
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| 13 | * @var Array |
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| 14 | */ |
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| 15 | private static $db = array( |
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| 16 | "CountryCode" => "Varchar(3)", |
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| 17 | "Code" => "Varchar(12)", |
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| 18 | "Name" => "Varchar(175)", |
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| 19 | "LegalNotice" => "Varchar(255)", |
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| 20 | "InclusiveOrExclusive" => "Enum('Inclusive,Exclusive', 'Inclusive')", |
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| 21 | "Rate" => "Double", |
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| 22 | "DoesNotApplyToAllProducts" => "Boolean", |
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| 23 | "AppliesToAllCountries" => "Boolean" |
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| 24 | ); |
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| 25 | |||
| 26 | /** |
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| 27 | * standard SS variable |
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| 28 | * @var Array |
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| 29 | */ |
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| 30 | private static $defaults = array( |
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| 31 | "InclusiveOrExclusive" => "Inclusive" |
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| 32 | ); |
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| 33 | |||
| 34 | /** |
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| 35 | * standard SS variable |
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| 36 | * @var Array |
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| 37 | */ |
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| 38 | private static $casting = array( |
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| 39 | "CountryName" => "Varchar", |
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| 40 | "PercentageNice" => "Varchar" |
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| 41 | ); |
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| 42 | |||
| 43 | /** |
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| 44 | * standard SS variable |
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| 45 | * @var Array |
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| 46 | */ |
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| 47 | private static $indexes = array( |
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| 48 | "Code" => true |
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| 49 | ); |
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| 50 | |||
| 51 | /** |
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| 52 | * standard SS variable |
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| 53 | * @var Array |
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| 54 | */ |
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| 55 | private static $searchable_fields = array( |
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| 56 | "CountryCode" => "PartialMatchFilter", |
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| 57 | "Code" => "PartialMatchFilter", |
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| 58 | "Name" => "PartialMatchFilter" |
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| 59 | ); |
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| 60 | |||
| 61 | /** |
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| 62 | * standard SS variable |
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| 63 | * @var Array |
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| 64 | */ |
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| 65 | private static $field_labels = array( |
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| 66 | "CountryName" => "Country Name", |
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| 67 | "CountryCode" => "Country Code", |
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| 68 | "Code" => "Code for tax", |
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| 69 | "Name" => "Name for tax", |
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| 70 | "InclusiveOrExclusive" => "Inclusive/Exclusive", |
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| 71 | "LegalNotice" => "Here you can put your GST number or VAT registration number", |
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| 72 | "Rate" => "Rate (e.g. 0.125 = 12.5%)", |
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| 73 | "PercentageNice" => "Percentage", |
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| 74 | "DoesNotApplyToAllProducts" => "Added to individual products only" |
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| 75 | ); |
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| 76 | |||
| 77 | |||
| 78 | /** |
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| 79 | * standard SS variable |
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| 80 | * @var Array |
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| 81 | */ |
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| 82 | private static $summary_fields = array( |
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| 83 | "CountryName" => 'Country', |
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| 84 | "Code" => 'Code', |
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| 85 | "Name" => 'Title', |
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| 86 | "InclusiveOrExclusive" => 'Type', |
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| 87 | "PercentageNice" => 'Percentage' |
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| 88 | ); |
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| 89 | |||
| 90 | /** |
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| 91 | * standard SS variable |
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| 92 | * @var String |
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| 93 | */ |
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| 94 | private static $singular_name = "Tax Option"; |
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| 95 | public function i18n_singular_name() |
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| 99 | |||
| 100 | |||
| 101 | /** |
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| 102 | * standard SS variable |
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| 103 | * @var String |
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| 104 | */ |
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| 105 | private static $plural_name = "Tax Options"; |
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| 106 | public function i18n_plural_name() |
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| 110 | |||
| 111 | /** |
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| 112 | * standard SS method |
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| 113 | * @param Member | NULL |
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| 114 | * @return Boolean |
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| 115 | */ |
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| 116 | View Code Duplication | public function canCreate($member = null) |
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| 127 | |||
| 128 | /** |
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| 129 | * standard SS method |
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| 130 | * @param Member | NULL |
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| 131 | * @return Boolean |
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| 132 | */ |
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| 133 | View Code Duplication | public function canView($member = null) |
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| 144 | |||
| 145 | /** |
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| 146 | * standard SS method |
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| 147 | * @param Member | NULL |
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| 148 | * @return Boolean |
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| 149 | */ |
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| 150 | View Code Duplication | public function canEdit($member = null) |
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| 161 | |||
| 162 | /** |
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| 163 | * standard SS method |
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| 164 | * @param Member | NULL |
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| 165 | * @return Boolean |
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| 166 | */ |
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| 167 | View Code Duplication | public function canDelete($member = null) |
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| 178 | |||
| 179 | /** |
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| 180 | * standard SS method |
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| 181 | * @return FieldList |
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| 182 | */ |
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| 183 | public function getCMSFields() |
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| 195 | |||
| 196 | public function Title() |
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| 209 | |||
| 210 | /** |
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| 211 | * standard SS method |
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| 212 | */ |
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| 213 | public function populateDefaults() |
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| 230 | |||
| 231 | /** |
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| 232 | * standard SS method |
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| 233 | */ |
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| 234 | public function onBeforeWrite() |
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| 243 | |||
| 244 | // /** |
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| 245 | // * standard SS method |
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| 246 | // */ |
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| 247 | // public function requireDefaultRecords() |
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| 248 | // { |
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| 249 | // parent::requireDefaultRecords(); |
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| 250 | // DB::query(" |
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| 251 | // UPDATE \"GSTTaxModifierOptions\" |
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| 252 | // SET \"InclusiveOrExclusive\" = 'Inclusive' |
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| 253 | // WHERE \"InclusiveOrExclusive\" <> 'Exclusive'" |
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| 254 | // ); |
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| 255 | // } |
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| 256 | |||
| 257 | /** |
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| 258 | * returns the instance of EcommerceDBConfig |
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| 259 | * |
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| 260 | * @return EcommerceDBConfig |
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| 261 | **/ |
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| 262 | public function EcomConfig() |
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| 266 | |||
| 267 | public function CountryName() |
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| 275 | |||
| 276 | public function PercentageNice() |
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| 284 | } |
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| 285 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.