1 | <?php |
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2 | /** |
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3 | * Base sort handler that has no options and performs a simple sort |
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4 | * |
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5 | * Definition items: |
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6 | * - formula: The formula to use to sort on, such as with a random sort. |
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7 | * The formula should be an array, with keys for database |
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8 | * types, and 'default' for non-specified. 'default' is |
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9 | * required, all others ('mysql', 'mysqli' and 'pgsql' are |
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10 | * optional). It is recommended you use 'default' for mysql |
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11 | * and create specific overrides for pgsql when the formulae |
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12 | * differ. |
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13 | * |
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14 | * @ingroup views_sort_handlers |
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15 | */ |
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16 | class views_handler_sort_formula extends views_handler_sort { |
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17 | /** |
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18 | * Constructor to take the formula this sorts on. |
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19 | */ |
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20 | function construct() { |
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21 | $this->formula = $this->definition['formula']; |
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22 | if (is_array($this->formula) && !isset($this->formula['default'])) { |
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23 | $this->error = t('views_handler_sort_formula missing default: @formula', array('@formula' => var_export($this->formula, TRUE))); |
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24 | } |
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25 | parent::construct(); |
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26 | } |
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27 | /** |
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28 | * Called to add the sort to a query. |
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29 | */ |
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30 | function query() { |
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31 | if (is_array($this->formula)) { |
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32 | global $db_type; |
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33 | if (isset($this->formula[$db_type])) { |
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34 | $formula = $this->formula[$db_type]; |
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35 | } |
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36 | else { |
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37 | $formula = $this->formula['default']; |
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38 | } |
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39 | } |
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40 | else { |
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41 | $formula = $this->formula; |
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42 | } |
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43 | $this->ensure_my_table(); |
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44 | // Add the field. |
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45 | $this->query->add_orderby(NULL, $formula, $this->options['order'], $this->table_alias . '_' . $this->field); |
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46 | } |
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47 | } |
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