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Complete rewrite and ability to join
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,72 +1,125 @@ | ||
| <?php namespace Nicolaslopezj\Searchable; | ||
|
|
||
| /** | ||
| * Trait SearchableTrait | ||
| * @package Nicolaslopezj\Searchable | ||
| */ | ||
| trait SearchableTrait | ||
| { | ||
| public function scopeSearch($query, $search) | ||
| { | ||
| //if no search query just return the simple query | ||
| if (!$search) return $query; | ||
|
|
||
| $selects = []; | ||
| /** | ||
| * Makes the search process | ||
| * @param $query | ||
| * @param $search | ||
| * @return mixed | ||
| */ | ||
| public function scopeSearch($query, $search) { | ||
|
|
||
| //here we add the if's functions to the selects array | ||
| //we separate each word | ||
| $words = explode(' ', $search); | ||
| //we need to count the sum of relevance to take only the good results | ||
| $relevance_count = 0; | ||
| for ($i = 0; $i < count($this->searchable); $i++) { | ||
| $field = $this->searchable[$i]; | ||
| $relevance_count += $field['relevance']; | ||
| //for each word and column we make a like and a =, the = has more relevance | ||
| //first with the = | ||
| $equal_fields = []; | ||
| foreach ($words as $word) { | ||
| $equal_fields[] = $field['column'] . " = '" . $word . "'"; | ||
| } | ||
|
|
||
| //we join each = | ||
| $equal_fields = join(' || ', $equal_fields); | ||
| if (!$search) { | ||
| return $query; | ||
| } | ||
|
|
||
| //we put the ='s into the if function and set the relevance | ||
| //if it match it adds the relevance number to the relevance column | ||
| $selects[] = 'if(' . $equal_fields . ', ' . $field['relevance'] * 15 . ', 0)'; | ||
| $relevance_count = 0; | ||
| $words = explode(' ', $search); | ||
|
|
||
| //then the like | ||
| $like_fields = []; | ||
| foreach ($words as $word) { | ||
| $like_fields[] = $field['column'] . " LIKE '" . $word . "%'"; | ||
| $selects = []; | ||
| foreach ($this->getColumns() as $column => $relevance) { | ||
| $relevance_count += $relevance; | ||
| $queries = $this->getSearchQueriesForColumn($column, $relevance, $words); | ||
| foreach ($queries as $select) { | ||
| $selects[] = $select; | ||
| } | ||
| } | ||
|
|
||
| //we join each like | ||
| $like_fields = join(' || ', $like_fields); | ||
| $this->addSelectsToQuery($query, $selects); | ||
| $this->filterQueryWithRelevace($query, ($relevance_count / 4)); | ||
|
|
||
| //we put the like's into the if function and set the relevance | ||
| //if it match it adds the relevance number to the relevance column | ||
| $selects[] = 'if(' . $like_fields . ', ' . $field['relevance'] * 5 . ', 0)'; | ||
| $this->makeJoins($query); | ||
|
|
||
| //and then the other like | ||
| $like_other_fields = []; | ||
| foreach ($words as $word) { | ||
| $like_other_fields[] = $field['column'] . " LIKE '%" . $word . "%'"; | ||
| } | ||
| return $query; | ||
| } | ||
|
|
||
| //we join each like | ||
| $like_other_fields = join(' || ', $like_other_fields); | ||
| /** | ||
| * Returns the search columns | ||
| * @return array | ||
| */ | ||
| protected function getColumns() { | ||
| return $this->searchable['columns']; | ||
| } | ||
|
|
||
| /** | ||
| * Returns the tables that has to join | ||
| * @return array | ||
| */ | ||
| protected function getJoins() { | ||
| return $this->searchable['joins']; | ||
| } | ||
|
|
||
| //we put the like's into the if function and set the relevance | ||
| //if it match it adds the relevance number to the relevance column | ||
| $selects[] = 'if(' . $like_other_fields . ', ' . $field['relevance'] . ', 0)'; | ||
| /** | ||
| * Adds the join sql to the query | ||
| * @param $query | ||
| */ | ||
| protected function makeJoins(&$query) { | ||
| foreach ($this->getJoins() as $table => $keys) { | ||
| $query->join($table, $keys[0], '=', $keys[1]); | ||
| } | ||
| } | ||
|
|
||
| //we sum each match to see the relevance | ||
| /** | ||
| * Puts all the select clauses to the main query | ||
| * @param $query | ||
| * @param $selects | ||
| */ | ||
| protected function addSelectsToQuery(&$query, $selects) { | ||
| $selects = \DB::raw(join(' + ', $selects) . ' as relevance'); | ||
| $query->select(['*', $selects]); | ||
| $query->select([$this->getTable() . '.*', $selects]); | ||
| } | ||
|
|
||
| //this make that we only select the matching rows | ||
| $query->havingRaw('relevance > ' . ($relevance_count / 4)); | ||
| //order rows by relevance | ||
| /** | ||
| * Adds relevance filter to the query | ||
| * @param $query | ||
| * @param $relevance_count | ||
| */ | ||
| protected function filterQueryWithRelevace(&$query, $relevance_count) { | ||
| $query->havingRaw('relevance > ' . $relevance_count); | ||
| $query->orderBy('relevance', 'desc'); | ||
| } | ||
|
|
||
| return $query; | ||
| /** | ||
| * Returns the search queries for the specified column | ||
| * @param $column | ||
| * @param $relevance | ||
| * @param $words | ||
| * @return array | ||
| */ | ||
| protected function getSearchQueriesForColumn($column, $relevance, $words) { | ||
| $queries = []; | ||
| $queries[] = $this->getSearchQuery($column, $relevance, $words, '=', 15); | ||
| $queries[] = $this->getSearchQuery($column, $relevance, $words, 'LIKE', 5, '', '%'); | ||
| $queries[] = $this->getSearchQuery($column, $relevance, $words, 'LIKE', 1, '%', '%'); | ||
| return $queries; | ||
| } | ||
|
|
||
| /** | ||
| * Returns the sql string for the parameters | ||
| * @param $column | ||
| * @param $relevance | ||
| * @param $words | ||
| * @param $compare | ||
| * @param $relevance_multiplier | ||
| * @param string $pre_word | ||
| * @param string $post_word | ||
| * @return string | ||
| */ | ||
| protected function getSearchQuery($column, $relevance, $words, $compare, $relevance_multiplier, $pre_word = '', $post_word = '') { | ||
| $fields = []; | ||
| foreach ($words as $word) { | ||
| $fields[] = $column . " " . $compare . " '" . $pre_word . $word . $post_word . "'"; | ||
| } | ||
|
|
||
| $fields = join(' || ', $fields); | ||
|
|
||
| return 'if(' . $fields . ', ' . $relevance * $relevance_multiplier . ', 0)'; | ||
| } | ||
|
|
||
| } |