1 | <?php |
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2 | /** |
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3 | * @file |
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4 | * Identification for fields the Date handlers can use. |
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5 | */ |
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6 | |
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7 | /** |
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8 | * Identify all potential date/timestamp fields. |
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9 | * |
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10 | * @return |
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11 | * array with fieldname, type, and table. |
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12 | * @see date_api_date_api_fields() which implements |
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13 | * the hook_date_api_fields() for the core date fields. |
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14 | */ |
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15 | function _date_api_fields($base = 'node') { |
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16 | // Make sure $base is never empty. |
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17 | if (empty($base)) { |
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18 | $base = 'node'; |
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19 | } |
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20 | $cid = 'date_api_fields_'. $base; |
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21 | cache_clear_all($cid, 'cache_views'); |
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22 | |
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23 | $all_fields = date_api_views_fetch_fields($base, 'field'); |
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24 | $fields = array(); |
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25 | foreach ((array) $all_fields as $name => $val) { |
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26 | $fromto = array(); |
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27 | $tmp = explode('.', $name); |
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28 | $field_name = $tmp[1]; |
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29 | $table_name = $tmp[0]; |
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30 | $alias = str_replace('.', '_', $name); |
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31 | |
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32 | if (!$handler = views_get_handler($table_name, $field_name, 'field')) { |
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33 | continue; |
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34 | } |
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35 | |
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36 | $handler_name = $handler->definition['handler']; |
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37 | $type = ''; |
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38 | |
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39 | // For cck fields, get the date type. |
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40 | $custom = array(); |
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41 | if (isset($handler->content_field)) { |
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42 | if ($handler->content_field['type'] == 'date') { |
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43 | $type = 'cck_string'; |
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44 | } |
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45 | elseif ($handler->content_field['type'] == 'datestamp') { |
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46 | $type = 'cck_timestamp'; |
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47 | } |
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48 | elseif ($handler->content_field['type'] == 'datetime') { |
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49 | $type = 'cck_datetime'; |
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50 | } |
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51 | } |
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52 | |
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53 | // Allow custom modules to provide date fields. |
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54 | // The is_a() function makes this work for any handler |
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55 | // that was derived from 'views_handler_field_date'. |
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56 | // Unfortunately is_a() is deprecated in PHP 5.2, so we need |
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57 | // a more convoluted test. |
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58 | elseif ((version_compare(PHP_VERSION, '5.2', '<') && is_a($handler, 'views_handler_field_date')) || ($handler instanceof views_handler_field_date)) { |
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59 | foreach (module_implements('date_api_fields') as $module) { |
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60 | $function = $module .'_date_api_fields'; |
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61 | if ($custom = $function("$table_name.$field_name")) { |
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62 | $type = 'custom'; |
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63 | break; |
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64 | } |
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65 | } |
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66 | } |
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67 | |
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68 | // Don't do anything if this is not a date field we can handle. |
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69 | if (!empty($type)) { |
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70 | |
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71 | // Handling for simple timestamp fields |
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72 | $fromto = array($alias, $alias); |
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73 | $tz_handling = 'site'; |
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74 | $related_fields = array(); |
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75 | $timezone_field = ''; |
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76 | $offset_field = ''; |
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77 | $rrule_field = ''; |
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78 | $delta_field = ''; |
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79 | $granularity = array('year', 'month', 'day', 'hour', 'minute'); |
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80 | |
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81 | // Handling for content field dates |
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82 | if (isset($handler->content_field['tz_handling'])) { |
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83 | $tz_handling = $handler->content_field['tz_handling']; |
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84 | $db_info = content_database_info($handler->content_field); |
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85 | if ($tz_handling == 'date') { |
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86 | $offset_field = $table_name .'.'. $db_info['columns']['offset']['column']; |
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87 | } |
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88 | $related_fields = array( |
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89 | $table_name .'.'. $field_name |
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90 | ); |
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91 | if (isset($db_info['columns']['value2']['column'])) { |
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92 | $related_fields = array_merge($related_fields, array($table_name .'.'. $db_info['columns']['value2']['column'])); |
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93 | } |
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94 | if (isset($db_info['columns']['timezone']['column'])) { |
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95 | $related_fields = array_merge($related_fields, array($table_name .'.'. $db_info['columns']['timezone']['column'])); |
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96 | $timezone_field = $table_name .'.'. $db_info['columns']['timezone']['column']; |
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97 | } |
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98 | if (isset($db_info['columns']['rrule']['column'])) { |
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99 | $related_fields = array_merge($related_fields, array($table_name .'.'. $db_info['columns']['rrule']['column'])); |
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100 | $rrule_field = $table_name .'.'. $db_info['columns']['rrule']['column']; |
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101 | } |
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102 | } |
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103 | // Get the delta value into the query. |
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104 | if (!empty($handler->content_field['multiple'])) { |
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105 | array_push($related_fields, "$table_name.delta"); |
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106 | $delta_field = $table_name .'_delta'; |
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107 | } |
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108 | |
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109 | // Handling for cck fromto dates |
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110 | if (isset($handler->content_field)) { |
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111 | switch ($handler->content_field['type']) { |
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112 | case 'date': |
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113 | case 'datetime': |
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114 | case 'datestamp': |
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115 | $db_info = content_database_info($handler->content_field); |
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116 | $fromto = array( |
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117 | $table_name .'_'. $db_info['columns']['value']['column'], |
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118 | $table_name .'_'. (!empty($handler->content_field['todate']) ? $db_info['columns']['value2']['column'] : $db_info['columns']['value']['column']), |
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119 | ); |
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120 | break; |
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121 | } |
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122 | $granularity = !empty($handler->content_field['granularity']) ? $handler->content_field['granularity'] : array('year', 'month', 'day', 'hour', 'minute'); |
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123 | } |
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124 | |
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125 | // CCK fields append a column name to the field, others do not |
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126 | // need a real field_name with no column name appended for cck date formatters |
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127 | switch ($type) { |
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128 | case 'cck_string': |
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129 | $sql_type = DATE_ISO; |
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130 | break; |
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131 | case 'cck_datetime': |
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132 | $sql_type = DATE_DATETIME; |
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133 | break; |
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134 | default: |
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135 | $sql_type = DATE_UNIX; |
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136 | break; |
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137 | } |
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138 | $fields['name'][$name] = array( |
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139 | 'type' => $type, |
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140 | 'sql_type' => $sql_type, |
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141 | 'label' => $val['group'] .': '. $val['title'], |
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142 | 'granularity' => $granularity, |
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143 | 'fullname' => $name, |
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144 | 'table_name' => $table_name, |
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145 | 'field_name' => $field_name, |
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146 | 'query_name' => $alias, |
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147 | 'fromto' => $fromto, |
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148 | 'tz_handling' => $tz_handling, |
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149 | 'offset_field' => $offset_field, |
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150 | 'timezone_field' => $timezone_field, |
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151 | 'rrule_field' => $rrule_field, |
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152 | 'related_fields' => $related_fields, |
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153 | 'delta_field' => $delta_field, |
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154 | ); |
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155 | |
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156 | // Allow the custom fields to over-write values. |
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157 | if (!empty($custom)) { |
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158 | foreach ($custom as $key => $val) { |
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159 | $fields['name'][$name][$key] = $val; |
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160 | } |
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161 | } |
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162 | if (isset($handler->content_field)) { |
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163 | if (drupal_substr($field_name, -1) == '2') { |
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164 | $len = (drupal_strlen($field_name) - 7); |
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165 | } |
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166 | else { |
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167 | $len = (drupal_strlen($field_name) - 6); |
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168 | } |
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169 | $fields['name'][$name]['real_field_name'] = drupal_substr($field_name, 0, $len); |
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170 | } |
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171 | else { |
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172 | $fields['name'][$name]['real_field_name'] = $field_name; |
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173 | } |
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174 | $fields['alias'][$alias] = $fields['name'][$name]; |
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175 | } |
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176 | } |
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177 | cache_set($cid, $fields, 'cache_views'); |
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178 | return $fields; |
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179 | } |
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