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annotate facetapi.callbacks.inc @ 0:a2b4f67e73dc default tip

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author Dirk Wintergruen <dwinter@mpiwg-berlin.mpg.de>
date Mon, 08 Jun 2015 10:21:54 +0200
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1 <?php
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2
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3 /**
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4 * @file
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5 * Callbacks referenced in hook implementations.
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6 */
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7
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8 /**
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9 * Maps bundle machine names to their human friendly label.
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10 *
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11 * @param array $values
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12 * An array of indexed values being mapped.
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13 * @param array $options
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14 * An associative array of map options containing:
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15 * - entities: An array of entities that $values are bundles for.
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16 *
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17 * @return array
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18 * An array mapping the indexed values to human readable values.
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19 */
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20 function facetapi_map_bundle(array $values, array $options) {
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21 if (empty($options['entities'])) {
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22 $options['entities'] = array('node');
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23 }
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24 foreach ($options['entities'] as $entity_type) {
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25 if ($info = entity_get_info($entity_type)) {
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26 foreach ($info['bundles'] as $bundle_name => $bundle_info) {
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27 $names[$bundle_name] = $bundle_info['label'];
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28 }
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29 }
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30 }
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31 return array_intersect_key($names, array_flip($values));
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32 }
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33
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34 /**
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35 * Map callback for node authors.
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36 */
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37 function facetapi_map_author(array $values) {
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38 $map = array();
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39 $users = user_load_multiple($values);
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40 foreach ($users as $user) {
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41 $map[$user->uid] = format_username($user);
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42 }
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43 if (isset($map[0])) {
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44 $map[0] = variable_get('anonymous', t('Anonymous'));
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45 }
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46 return $map;
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47 }
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48
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49 /**
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50 * Map callback for languages.
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51 */
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52 function facetapi_map_language(array $values) {
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53 $map = array();
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54 $language_list = language_list();
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55 foreach ($values as $language) {
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56 if (isset($language_list[$language])) {
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57 $map[$language] = t($language_list[$language]->name);
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58 }
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59 else {
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60 $map[$language] = t('Language neutral');
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61 }
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62 }
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63 return $map;
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64 }
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65
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66 /**
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67 * Maps date ranges to human readable dates.
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68 *
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69 * @param array $values
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70 * An array of indexed values being mapped.
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71 * @param array $options
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72 * An associative array of map options containing:
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73 * - format callback: The callback used to format the date, defaults to
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74 * "facetapi_format_timestamp".
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75 *
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76 * @return array
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77 * An array mapping the indexed values to human readable values.
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78 */
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79 function facetapi_map_date(array $values, array $options) {
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80 if (empty($options['format callback'])) {
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81 $options['format callback'] = 'facetapi_format_timestamp';
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82 }
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83 $map = array();
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84 foreach ($values as $value) {
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85 $range = explode(' TO ', trim($value, '{[]}'));
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86 if (isset($range[1])) {
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87 $gap = facetapi_get_date_gap($range[0], $range[1]);
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88 $map[$value] = facetapi_format_date($range[0], $gap, $options['format callback']);
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89 }
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90 }
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91 return $map;
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92 }
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93
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94 /**
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95 * Callback that returns the minimum date in the node table.
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96 *
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97 * @param $facet
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98 * An array containing the facet definition.
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99 *
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100 * @return
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101 * The minimum time in the node table.
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102 *
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103 * @todo Cache this value.
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104 */
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105 function facetapi_get_min_date(array $facet) {
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106 $query = db_select('node', 'n')->condition('status', 1);
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107 $query->addExpression('MIN(' . $facet['name'] . ')', 'max');
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108 return $query->execute()->fetch()->max;
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109 }
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110
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111 /**
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112 * Callback that returns the minimum value in the node table.
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113 *
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114 * @param $facet
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115 * An array containing the facet definition.
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116 *
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117 * @return
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118 * The minimum time in the node table.
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119 *
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120 * @todo Cache this value.
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121 */
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122 function facetapi_get_max_date(array $facet) {
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123 $query = db_select('node', 'n')->condition('status', 1);
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124 $query->addExpression('MAX(' . $facet['name'] . ')', 'max');
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125 return $query->execute()->fetch()->max;
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126 }
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127
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128 /**
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129 * Map callback for taxonomy terms.
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130 */
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131 function facetapi_map_taxonomy_terms(array $values) {
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132 $map = array();
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133 $terms = taxonomy_term_load_multiple($values);
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134 foreach ($terms as $term) {
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135 $map[$term->tid] = entity_label('taxonomy_term', $term);
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136 }
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137 return $map;
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138 }
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139
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140 /**
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141 * Gets parent information for taxonomy terms.
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142 *
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143 * @param array $values
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144 * An array containing the term ids.
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145 *
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146 * @return
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147 * An associative array keyed by term ID to parent ID.
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148 */
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149 function facetapi_get_taxonomy_hierarchy(array $values) {
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150 $result = db_select('taxonomy_term_hierarchy', 'th')
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151 ->fields('th', array('tid', 'parent'))
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152 ->condition('th.parent', '0', '>')
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153 ->condition(db_or()
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154 ->condition('th.tid', $values, 'IN')
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155 ->condition('th.parent', $values, 'IN')
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156 )
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157 ->execute();
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158
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159 $parents = array();
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160 foreach ($result as $record) {
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161 $parents[$record->tid][] = $record->parent;
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162 }
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163 return $parents;
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164 }