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1 | <?php |
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2 | |||
3 | namespace Kunstmaan\SeoBundle\Twig; |
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4 | |||
5 | use Kunstmaan\SeoBundle\Helper\Order, |
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6 | Kunstmaan\SeoBundle\Helper\OrderConverter, |
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7 | Kunstmaan\SeoBundle\Helper\OrderPreparer; |
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8 | |||
9 | use Twig_Environment, |
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10 | Twig_Extension; |
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11 | |||
12 | /** |
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13 | * Twig extensions for Google Analytics |
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14 | */ |
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15 | class GoogleAnalyticsTwigExtension extends Twig_Extension |
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16 | { |
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17 | protected $accountVarName = 'account_id'; |
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18 | |||
19 | protected $accountId; |
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20 | |||
21 | /** @var OrderPreparer */ |
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22 | protected $orderPreparer; |
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23 | |||
24 | /** @var OrderConverter */ |
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25 | protected $orderConverter; |
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26 | |||
27 | /** |
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28 | * Returns a list of functions to add to the existing list. |
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29 | * |
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30 | * @return array An array of functions |
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31 | */ |
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32 | View Code Duplication | public function getFunctions() |
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33 | { |
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34 | return array( |
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35 | new \Twig_SimpleFunction( |
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36 | 'google_analytics_initialize', |
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37 | array($this, 'renderInitialize'), |
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38 | array('is_safe' => array('html'), 'needs_environment' => true) |
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39 | ), |
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40 | new \Twig_SimpleFunction( |
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41 | 'google_analytics_track_order', |
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42 | array($this, 'renderECommerceTracking'), |
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43 | array('is_safe' => array('html'), 'needs_environment' => true) |
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44 | ), |
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45 | ); |
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46 | } |
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47 | |||
48 | |||
49 | /** |
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50 | * @param string $id The Google Analytics Account ID. |
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51 | */ |
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52 | public function setAccountID($id) |
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53 | { |
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54 | $this->accountId = $id; |
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55 | } |
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56 | |||
57 | /** |
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58 | * @param OrderPreparer $preparer |
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59 | */ |
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60 | public function setOrderPreparer($preparer) |
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61 | { |
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62 | $this->orderConverter = $preparer; |
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63 | } |
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64 | |||
65 | /** |
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66 | * @param OrderConverter $converter |
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67 | */ |
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68 | public function setOrderConverter($converter) |
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69 | { |
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70 | $this->orderConverter = $converter; |
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71 | } |
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72 | |||
73 | /** |
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74 | * Renders the default Google Analytics JavaScript. |
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75 | * |
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76 | * If the options are not set it'll try and load the account ID from your parameters (google.analytics.account_id) |
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77 | * |
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78 | * @param $environment \Twig_Environment |
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79 | * @param $options array|null Example: {account_id: 'UA-XXXXX-Y'} |
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80 | * |
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81 | * @return string The HTML rendered. |
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82 | * |
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83 | * @throws \Twig_Error_Runtime When the Google Analytics ID is nowhere to be found. |
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84 | * |
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85 | */ |
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86 | public function renderInitialize(\Twig_Environment $environment, $options = null) |
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87 | { |
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88 | if (is_null($options)) { |
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89 | $options = array(); |
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90 | } |
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91 | |||
92 | $defaults = array(); |
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93 | |||
94 | $this->setOptionIfNotSet($defaults, $this->accountVarName, $this->accountId); |
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95 | |||
96 | // Things set in $options will override things set in $defaults. |
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97 | $options = array_merge($defaults, $options); |
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98 | |||
99 | if (!$this->isOptionSet($options, $this->accountVarName)) { |
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100 | throw new \Twig_Error_Runtime( |
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101 | "The google_analytics_initialize function depends on a Google Analytics account ID. You can either pass this along in the initialize_google_analytics function ($this->accountVarName), provide a variable under 'parameters.google.analytics.account_id'." |
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102 | ); |
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103 | } |
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104 | |||
105 | $template = $environment->loadTemplate('KunstmaanSeoBundle:GoogleAnalyticsTwigExtension:init.html.twig'); |
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106 | |||
107 | return $template->render($options); |
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108 | } |
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109 | |||
110 | |||
111 | /** |
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112 | * @param Twig_Environment $environment |
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113 | * @param Order $order |
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114 | * |
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115 | * @return string The HTML rendered. |
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116 | */ |
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117 | public function renderECommerceTracking(\Twig_Environment $environment, Order $order) |
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118 | { |
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119 | $order = $this->orderPreparer->prepare($order); |
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120 | $options = $this->orderConverter->convert($order); |
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121 | $template = $environment->loadTemplate( |
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122 | 'KunstmaanSeoBundle:GoogleAnalyticsTwigExtension:ecommerce_tracking.html.twig' |
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123 | ); |
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124 | |||
125 | return $template->render($options); |
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126 | } |
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127 | |||
128 | /** |
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129 | * Prefer the given option if already set. Otherwise set the value given. |
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130 | * |
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131 | * @param array &$arr This is modified in place. |
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132 | * @param string $option The key in the $arr array. |
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133 | * @param mixed $value The new value if the option wasn't set already. |
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134 | */ |
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135 | private function setOptionIfNotSet(&$arr, $option, $value) |
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136 | { |
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137 | if ($this->isOptionSet($arr, $option)) { |
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138 | $arr[$option] = $value; |
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139 | } |
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140 | } |
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141 | |||
142 | /** |
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143 | * Check if an option is set. |
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144 | * |
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145 | * @param array $arr The array to check. |
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146 | * @param string $option The key in the $arr array. |
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147 | * |
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148 | * @return bool |
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149 | */ |
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150 | private function isOptionSet($arr, $option) |
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151 | { |
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152 | return (!isset($arr[$option]) || !empty($arr[$option])); |
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153 | } |
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154 | } |
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155 |
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.