yajra /
laravel-datatables
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:
Complex classes like QueryBuilderEngine often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use QueryBuilderEngine, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 21 | class QueryBuilderEngine extends BaseEngine |
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| 22 | { |
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| 23 | /** |
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| 24 | * Builder object. |
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| 25 | * |
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| 26 | * @var \Illuminate\Database\Query\Builder|\Illuminate\Database\Eloquent\Builder |
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| 27 | */ |
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| 28 | protected $query; |
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| 29 | |||
| 30 | /** |
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| 31 | * Query builder object. |
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| 32 | * |
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| 33 | * @var \Illuminate\Database\Query\Builder |
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| 34 | */ |
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| 35 | protected $builder; |
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| 36 | |||
| 37 | /** |
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| 38 | * Database connection used. |
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| 39 | * |
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| 40 | * @var \Illuminate\Database\Connection |
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| 41 | */ |
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| 42 | protected $connection; |
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| 43 | |||
| 44 | /** |
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| 45 | * @param \Illuminate\Database\Query\Builder $builder |
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| 46 | * @param \Yajra\Datatables\Request $request |
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| 47 | */ |
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| 48 | public function __construct(Builder $builder, Request $request) |
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| 49 | { |
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| 50 | $this->query = $builder; |
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| 51 | $this->request = $request; |
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| 52 | $this->columns = $builder->columns; |
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| 53 | $this->connection = $builder->getConnection(); |
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| 54 | $this->prefix = $this->connection->getTablePrefix(); |
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| 55 | $this->database = $this->connection->getDriverName(); |
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| 56 | if ($this->isDebugging()) { |
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| 57 | $this->connection->enableQueryLog(); |
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| 58 | } |
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| 59 | } |
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| 60 | |||
| 61 | /** |
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| 62 | * Set auto filter off and run your own filter. |
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| 63 | * Overrides global search. |
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| 64 | * |
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| 65 | * @param callable $callback |
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| 66 | * @param bool $globalSearch |
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| 67 | * @return $this |
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| 68 | */ |
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| 69 | public function filter(callable $callback, $globalSearch = false) |
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| 70 | { |
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| 71 | $this->overrideGlobalSearch($callback, $this->query, $globalSearch); |
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| 72 | |||
| 73 | return $this; |
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| 74 | } |
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| 75 | |||
| 76 | /** |
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| 77 | * Organizes works. |
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| 78 | * |
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| 79 | * @param bool $mDataSupport |
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| 80 | * @param bool $orderFirst |
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| 81 | * @return \Illuminate\Http\JsonResponse |
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| 82 | */ |
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| 83 | public function make($mDataSupport = false, $orderFirst = false) |
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| 84 | { |
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| 85 | return parent::make($mDataSupport, $orderFirst); |
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| 86 | } |
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| 87 | |||
| 88 | /** |
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| 89 | * Count total items. |
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| 90 | * |
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| 91 | * @return integer |
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| 92 | */ |
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| 93 | public function totalCount() |
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| 94 | { |
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| 95 | return $this->totalRecords ? $this->totalRecords : $this->count(); |
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| 96 | } |
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| 97 | |||
| 98 | /** |
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| 99 | * Counts current query. |
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| 100 | * |
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| 101 | * @return int |
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| 102 | */ |
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| 103 | public function count() |
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| 104 | { |
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| 105 | $myQuery = clone $this->query; |
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| 106 | // if its a normal query ( no union, having and distinct word ) |
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| 107 | // replace the select with static text to improve performance |
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| 108 | View Code Duplication | if (! Str::contains(Str::lower($myQuery->toSql()), ['union', 'having', 'distinct', 'order by', 'group by'])) { |
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| 109 | $row_count = $this->wrap('row_count'); |
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| 110 | $myQuery->select($this->connection->raw("'1' as {$row_count}")); |
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| 111 | } |
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| 112 | |||
| 113 | return $this->connection->table($this->connection->raw('(' . $myQuery->toSql() . ') count_row_table')) |
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| 114 | ->setBindings($myQuery->getBindings())->count(); |
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| 115 | } |
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| 116 | |||
| 117 | /** |
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| 118 | * Wrap column with DB grammar. |
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| 119 | * |
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| 120 | * @param string $column |
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| 121 | * @return string |
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| 122 | */ |
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| 123 | protected function wrap($column) |
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| 124 | { |
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| 125 | return $this->connection->getQueryGrammar()->wrap($column); |
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| 126 | } |
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| 127 | |||
| 128 | /** |
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| 129 | * Perform global search. |
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| 130 | * |
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| 131 | * @return void |
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| 132 | */ |
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| 133 | public function filtering() |
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| 134 | { |
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| 135 | $keyword = $this->request->keyword(); |
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| 136 | |||
| 137 | if ($this->isSmartSearch()) { |
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| 138 | $this->smartGlobalSearch($keyword); |
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| 139 | |||
| 140 | return; |
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| 141 | } |
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| 142 | |||
| 143 | $this->globalSearch($keyword); |
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| 144 | } |
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| 145 | |||
| 146 | /** |
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| 147 | * Perform multi-term search by splitting keyword into |
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| 148 | * individual words and searches for each of them. |
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| 149 | * |
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| 150 | * @param string $keyword |
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| 151 | */ |
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| 152 | private function smartGlobalSearch($keyword) |
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| 153 | { |
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| 154 | $keywords = array_filter(explode(' ', $keyword)); |
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| 155 | |||
| 156 | foreach ($keywords as $keyword) { |
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| 157 | $this->globalSearch($keyword); |
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| 158 | } |
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| 159 | } |
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| 160 | |||
| 161 | /** |
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| 162 | * Perform global search for the given keyword. |
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| 163 | * |
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| 164 | * @param string $keyword |
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| 165 | */ |
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| 166 | private function globalSearch($keyword) |
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| 167 | { |
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| 168 | $this->query->where(function ($query) use ($keyword) { |
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| 169 | $query = $this->getBaseQueryBuilder($query); |
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| 170 | |||
| 171 | foreach ($this->request->searchableColumnIndex() as $index) { |
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| 172 | $columnName = $this->getColumnName($index); |
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| 173 | if ($this->isBlacklisted($columnName) && ! $this->hasCustomFilter($columnName)) { |
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| 174 | continue; |
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| 175 | } |
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| 176 | |||
| 177 | if ($this->hasCustomFilter($columnName)) { |
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| 178 | $callback = $this->columnDef['filter'][$columnName]['method']; |
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| 179 | $builder = $query->newQuery(); |
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| 180 | $callback($builder, $keyword); |
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| 181 | $query->addNestedWhereQuery($builder, 'or'); |
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| 182 | } else { |
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| 183 | View Code Duplication | if (count(explode('.', $columnName)) > 1) { |
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| 184 | $eagerLoads = $this->getEagerLoads(); |
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| 185 | $parts = explode('.', $columnName); |
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| 186 | $relationColumn = array_pop($parts); |
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| 187 | $relation = implode('.', $parts); |
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| 188 | if (in_array($relation, $eagerLoads)) { |
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| 189 | $this->compileRelationSearch( |
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| 190 | $query, |
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| 191 | $relation, |
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| 192 | $relationColumn, |
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| 193 | $keyword |
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| 194 | ); |
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| 195 | } else { |
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| 196 | $this->compileQuerySearch($query, $columnName, $keyword); |
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| 197 | } |
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| 198 | } else { |
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| 199 | $this->compileQuerySearch($query, $columnName, $keyword); |
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| 200 | } |
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| 201 | } |
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| 202 | |||
| 203 | $this->isFilterApplied = true; |
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| 204 | } |
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| 205 | }); |
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| 206 | } |
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| 207 | |||
| 208 | /** |
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| 209 | * Get the base query builder instance. |
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| 210 | * |
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| 211 | * @param mixed $instance |
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| 212 | * @return \Illuminate\Database\Query\Builder|\Illuminate\Database\Eloquent\Builder |
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| 213 | */ |
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| 214 | protected function getBaseQueryBuilder($instance = null) |
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| 215 | { |
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| 216 | if (! $instance) { |
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| 217 | $instance = $this->query; |
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| 218 | } |
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| 219 | |||
| 220 | if ($instance instanceof EloquentBuilder) { |
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| 221 | return $instance->getQuery(); |
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| 222 | } |
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| 223 | |||
| 224 | return $instance; |
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| 225 | } |
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| 226 | |||
| 227 | /** |
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| 228 | * Check if column has custom filter handler. |
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| 229 | * |
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| 230 | * @param string $columnName |
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| 231 | * @return bool |
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| 232 | */ |
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| 233 | public function hasCustomFilter($columnName) |
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| 234 | { |
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| 235 | return isset($this->columnDef['filter'][$columnName]); |
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| 236 | } |
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| 237 | |||
| 238 | /** |
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| 239 | * Get eager loads keys if eloquent. |
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| 240 | * |
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| 241 | * @return array |
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| 242 | */ |
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| 243 | protected function getEagerLoads() |
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| 244 | { |
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| 245 | if ($this->query instanceof EloquentBuilder) { |
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| 246 | return array_keys($this->query->getEagerLoads()); |
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| 247 | } |
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| 248 | |||
| 249 | return []; |
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| 250 | } |
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| 251 | |||
| 252 | /** |
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| 253 | * Add relation query on global search. |
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| 254 | * |
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| 255 | * @param mixed $query |
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| 256 | * @param string $relation |
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| 257 | * @param string $column |
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| 258 | * @param string $keyword |
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| 259 | */ |
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| 260 | protected function compileRelationSearch($query, $relation, $column, $keyword) |
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| 261 | { |
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| 262 | $myQuery = clone $this->query; |
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| 263 | |||
| 264 | /** |
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| 265 | * For compile nested relation, we need store all nested relation as array |
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| 266 | * and reverse order to apply where query. |
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| 267 | * With this method we can create nested sub query with properly relation. |
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| 268 | */ |
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| 269 | |||
| 270 | /** |
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| 271 | * Store all relation data that require in next step |
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| 272 | */ |
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| 273 | $relationChunk = []; |
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| 274 | |||
| 275 | /** |
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| 276 | * Store last eloquent query builder for get next relation. |
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| 277 | */ |
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| 278 | $lastQuery = $query; |
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| 279 | |||
| 280 | $relations = explode('.', $relation); |
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| 281 | $lastRelation = end($relations); |
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| 282 | foreach ($relations as $relation) { |
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| 283 | $relationType = $myQuery->getModel()->{$relation}(); |
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| 284 | $myQuery->orWhereHas($relation, function ($builder) use ( |
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| 285 | $column, |
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| 286 | $keyword, |
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| 287 | $query, |
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| 288 | $relationType, |
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| 289 | $relation, |
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| 290 | $lastRelation, |
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| 291 | &$relationChunk, |
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| 292 | &$lastQuery |
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| 293 | ) { |
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| 294 | $builder->select($this->connection->raw('count(1)')); |
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| 295 | |||
| 296 | // We will perform search on last relation only. |
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| 297 | if ($relation == $lastRelation) { |
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| 298 | $this->compileQuerySearch($builder, $column, $keyword, ''); |
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| 299 | } |
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| 300 | |||
| 301 | // Put require object to next step!! |
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| 302 | $relationChunk[$relation] = [ |
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| 303 | 'builder' => $builder, |
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| 304 | 'relationType' => $relationType, |
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| 305 | 'query' => $lastQuery, |
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| 306 | ]; |
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| 307 | |||
| 308 | // This is trick make sub query. |
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| 309 | $lastQuery = $builder; |
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| 310 | }); |
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| 311 | |||
| 312 | // This is trick to make nested relation by pass previous relation to be next query eloquent builder |
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| 313 | $myQuery = $relationType; |
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| 314 | } |
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| 315 | |||
| 316 | /** |
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| 317 | * Reverse them all |
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| 318 | */ |
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| 319 | $relationChunk = array_reverse($relationChunk, true); |
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| 320 | |||
| 321 | /** |
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| 322 | * Create valuable for use in check last relation |
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| 323 | */ |
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| 324 | end($relationChunk); |
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| 325 | $lastRelation = key($relationChunk); |
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| 326 | reset($relationChunk); |
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| 327 | |||
| 328 | /** |
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| 329 | * Walking ... |
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| 330 | */ |
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| 331 | foreach ($relationChunk as $relation => $chunk) { |
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| 332 | // Prepare variables |
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| 333 | $builder = $chunk['builder']; |
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| 334 | $query = $chunk['query']; |
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| 335 | $bindings = $builder->getBindings(); |
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| 336 | $builder = "({$builder->toSql()}) >= 1"; |
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| 337 | |||
| 338 | // Check if it last relation we will use orWhereRaw |
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| 339 | if ($lastRelation == $relation) { |
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| 340 | $relationMethod = "orWhereRaw"; |
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| 341 | } else { |
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| 342 | // For case parent relation of nested relation. |
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| 343 | // We must use and for properly query and get correct result |
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| 344 | $relationMethod = "whereRaw"; |
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| 345 | } |
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| 346 | |||
| 347 | $query->{$relationMethod}($builder, $bindings); |
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| 348 | } |
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| 349 | } |
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| 350 | |||
| 351 | /** |
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| 352 | * Compile query builder where clause depending on configurations. |
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| 353 | * |
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| 354 | * @param mixed $query |
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| 355 | * @param string $column |
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| 356 | * @param string $keyword |
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| 357 | * @param string $relation |
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| 358 | */ |
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| 359 | protected function compileQuerySearch($query, $column, $keyword, $relation = 'or') |
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| 371 | |||
| 372 | /** |
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| 373 | * Patch for fix about ambiguous field. |
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| 374 | * Ambiguous field error will appear when query use join table and search with keyword. |
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| 375 | * |
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| 376 | * @param mixed $query |
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| 377 | * @param string $column |
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| 378 | * @return string |
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| 379 | */ |
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| 380 | protected function addTablePrefix($query, $column) |
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| 399 | |||
| 400 | /** |
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| 401 | * Wrap a column and cast based on database driver. |
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| 402 | * |
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| 403 | * @param string $column |
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| 404 | * @return string |
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| 405 | */ |
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| 406 | protected function castColumn($column) |
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| 416 | |||
| 417 | /** |
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| 418 | * Prepare search keyword based on configurations. |
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| 419 | * |
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| 420 | * @param string $keyword |
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| 421 | * @return string |
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| 422 | */ |
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| 423 | protected function prepareKeyword($keyword) |
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| 439 | |||
| 440 | /** |
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| 441 | * Perform column search. |
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| 442 | * |
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| 443 | * @return void |
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| 444 | */ |
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| 445 | public function columnSearch() |
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| 446 | { |
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| 447 | $columns = $this->request->columns(); |
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| 448 | |||
| 449 | foreach ($columns as $index => $column) { |
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| 450 | if (! $this->request->isColumnSearchable($index)) { |
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| 451 | continue; |
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| 452 | } |
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| 453 | |||
| 454 | $column = $this->getColumnName($index); |
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| 455 | |||
| 456 | if ($this->hasCustomFilter($column)) { |
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| 457 | // get a raw keyword (without wildcards) |
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| 458 | $keyword = $this->getColumnSearchKeyword($index, true); |
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| 459 | $callback = $this->columnDef['filter'][$column]['method']; |
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| 460 | $builder = $this->query->newQuery(); |
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| 461 | $callback($builder, $keyword); |
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| 462 | $this->query->addNestedWhereQuery($builder); |
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| 463 | View Code Duplication | } else { |
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| 464 | if (count(explode('.', $column)) > 1) { |
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| 465 | $eagerLoads = $this->getEagerLoads(); |
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| 466 | $parts = explode('.', $column); |
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| 467 | $relationColumn = array_pop($parts); |
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| 468 | $relation = implode('.', $parts); |
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| 469 | if (in_array($relation, $eagerLoads)) { |
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| 470 | $column = $this->joinEagerLoadedColumn($relation, $relationColumn); |
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| 471 | } |
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| 472 | } |
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| 473 | |||
| 474 | $keyword = $this->getColumnSearchKeyword($index); |
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| 475 | $this->compileColumnSearch($index, $column, $keyword); |
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| 476 | } |
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| 477 | |||
| 478 | $this->isFilterApplied = true; |
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| 479 | } |
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| 480 | } |
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| 481 | |||
| 482 | /** |
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| 483 | * Get column keyword to use for search. |
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| 484 | * |
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| 485 | * @param int $i |
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| 486 | * @param bool $raw |
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| 487 | * @return string |
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| 488 | */ |
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| 489 | protected function getColumnSearchKeyword($i, $raw = false) |
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| 490 | { |
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| 491 | $keyword = $this->request->columnKeyword($i); |
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| 492 | if ($raw || $this->request->isRegex($i)) { |
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| 493 | return $keyword; |
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| 494 | } |
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| 495 | |||
| 496 | return $this->setupKeyword($keyword); |
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| 497 | } |
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| 498 | |||
| 499 | /** |
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| 500 | * Join eager loaded relation and get the related column name. |
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| 501 | * |
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| 502 | * @param string $relation |
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| 503 | * @param string $relationColumn |
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| 504 | * @return string |
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| 505 | */ |
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| 506 | protected function joinEagerLoadedColumn($relation, $relationColumn) |
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| 507 | { |
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| 508 | $lastQuery = $this->query; |
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| 509 | foreach (explode('.', $relation) as $eachRelation) { |
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| 510 | $model = $lastQuery->getRelation($eachRelation); |
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| 511 | switch (true) { |
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| 512 | case $model instanceof BelongsToMany: |
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| 513 | $pivot = $model->getTable(); |
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| 514 | $pivotPK = $model->getExistenceCompareKey(); |
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| 515 | $pivotFK = $model->getQualifiedParentKeyName(); |
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| 516 | $this->performJoin($pivot, $pivotPK, $pivotFK); |
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| 517 | |||
| 518 | $related = $model->getRelated(); |
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| 519 | $table = $related->getTable(); |
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| 520 | $tablePK = $related->getForeignKey(); |
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| 521 | $foreign = $pivot . '.' . $tablePK; |
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| 522 | $other = $related->getQualifiedKeyName(); |
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| 523 | |||
| 524 | $lastQuery->addSelect($table . '.' . $relationColumn); |
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| 525 | $this->performJoin($table, $foreign, $other); |
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| 526 | |||
| 527 | break; |
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| 528 | |||
| 529 | case $model instanceof HasOneOrMany: |
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| 530 | $table = $model->getRelated()->getTable(); |
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| 531 | $foreign = $model->getQualifiedForeignKeyName(); |
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| 532 | $other = $model->getQualifiedParentKeyName(); |
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| 533 | break; |
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| 534 | |||
| 535 | case $model instanceof BelongsTo: |
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| 536 | $table = $model->getRelated()->getTable(); |
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| 537 | $foreign = $model->getQualifiedForeignKey(); |
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| 538 | $other = $model->getQualifiedOwnerKeyName(); |
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| 539 | break; |
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| 540 | |||
| 541 | default: |
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| 542 | $table = $model->getRelated()->getTable(); |
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| 543 | if ($model instanceof HasOneOrMany) { |
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| 544 | $foreign = $model->getForeignKey(); |
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| 545 | $other = $model->getQualifiedParentKeyName(); |
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| 546 | } else { |
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| 547 | $foreign = $model->getQualifiedForeignKey(); |
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| 548 | $other = $model->getQualifiedOtherKeyName(); |
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| 549 | } |
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| 550 | } |
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| 551 | $this->performJoin($table, $foreign, $other); |
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| 552 | $lastQuery = $model->getQuery(); |
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| 553 | } |
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| 554 | |||
| 555 | return $table . '.' . $relationColumn; |
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| 556 | } |
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| 557 | |||
| 558 | /** |
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| 559 | * Perform join query. |
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| 560 | * |
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| 561 | * @param string $table |
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| 562 | * @param string $foreign |
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| 563 | * @param string $other |
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| 564 | */ |
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| 565 | protected function performJoin($table, $foreign, $other) |
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| 576 | |||
| 577 | /** |
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| 578 | * Compile queries for column search. |
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| 579 | * |
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| 580 | * @param int $i |
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| 581 | * @param mixed $column |
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| 582 | * @param string $keyword |
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| 583 | */ |
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| 584 | protected function compileColumnSearch($i, $column, $keyword) |
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| 593 | |||
| 594 | /** |
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| 595 | * Compile regex query column search. |
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| 596 | * |
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| 597 | * @param mixed $column |
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| 598 | * @param string $keyword |
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| 599 | */ |
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| 600 | protected function regexColumnSearch($column, $keyword) |
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| 601 | { |
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| 602 | if ($this->isOracleSql()) { |
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| 603 | $sql = ! $this->isCaseInsensitive() ? 'REGEXP_LIKE( ' . $column . ' , ? )' : 'REGEXP_LIKE( LOWER(' . $column . ') , ?, \'i\' )'; |
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| 604 | $this->query->whereRaw($sql, [$keyword]); |
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| 605 | } elseif ($this->database == 'pgsql') { |
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| 606 | $sql = ! $this->isCaseInsensitive() ? $column . ' ~ ?' : $column . ' ~* ? '; |
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| 607 | $this->query->whereRaw($sql, [$keyword]); |
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| 608 | } else { |
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| 609 | $sql = ! $this->isCaseInsensitive() ? $column . ' REGEXP ?' : 'LOWER(' . $column . ') REGEXP ?'; |
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| 613 | |||
| 614 | /** |
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| 615 | * Perform sorting of columns. |
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| 616 | * |
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| 617 | * @return void |
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| 618 | */ |
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| 619 | public function ordering() |
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| 680 | |||
| 681 | /** |
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| 682 | * Check if column has custom sort handler. |
||
| 683 | * |
||
| 684 | * @param string $column |
||
| 685 | * @return bool |
||
| 686 | */ |
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| 687 | protected function hasCustomOrder($column) |
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| 691 | |||
| 692 | /** |
||
| 693 | * Get NULLS LAST SQL. |
||
| 694 | * |
||
| 695 | * @param string $column |
||
| 696 | * @param string $direction |
||
| 697 | * @return string |
||
| 698 | */ |
||
| 699 | protected function getNullsLastSql($column, $direction) |
||
| 705 | |||
| 706 | /** |
||
| 707 | * Perform pagination. |
||
| 708 | * |
||
| 709 | * @return void |
||
| 710 | */ |
||
| 711 | public function paging() |
||
| 716 | |||
| 717 | /** |
||
| 718 | * Get paginated results. |
||
| 719 | * |
||
| 720 | * @return \Illuminate\Support\Collection |
||
| 721 | */ |
||
| 722 | public function results() |
||
| 726 | |||
| 727 | /** |
||
| 728 | * Add column in collection. |
||
| 729 | * |
||
| 730 | * @param string $name |
||
| 731 | * @param string|callable $content |
||
| 732 | * @param bool|int $order |
||
| 733 | * @return \Yajra\Datatables\Engines\BaseEngine|\Yajra\Datatables\Engines\QueryBuilderEngine |
||
| 734 | */ |
||
| 735 | public function addColumn($name, $content, $order = false) |
||
| 741 | |||
| 742 | /** |
||
| 743 | * Get query builder instance. |
||
| 744 | * |
||
| 745 | * @return \Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder |
||
| 746 | */ |
||
| 747 | public function getQuery() |
||
| 751 | |||
| 752 | /** |
||
| 753 | * Append debug parameters on output. |
||
| 754 | * |
||
| 755 | * @param array $output |
||
| 756 | * @return array |
||
| 757 | */ |
||
| 758 | protected function showDebugger(array $output) |
||
| 765 | } |
||
| 766 |
Loading history...
It seems like the method you are trying to call exists only in some of the possible types.
Let’s take a look at an example:
Available Fixes
Add an additional type-check:
Only allow a single type to be passed if the variable comes from a parameter: