code: public function buildCondition($condition, &$columns)
      {
          static $builders = [
              'not' => 'buildNotCondition',
              'and' => 'buildAndCondition',
              'or' => 'buildAndCondition',
              'between' => 'buildBetweenCondition',
              'not between' => 'buildBetweenCondition',
              'in' => 'buildInCondition',
              'not in' => 'buildInCondition',
              'like' => 'buildLikeCondition',
              'not like' => 'buildLikeCondition',
              'or like' => 'buildLikeCondition',
              'or not like' => 'buildLikeCondition',
              '>' => 'buildCompareCondition',
              '>=' => 'buildCompareCondition',
              '<' => 'buildCompareCondition',
              '<=' => 'buildCompareCondition',
          ];
  
          if (!is_array($condition)) {
              throw new NotSupportedException('Where condition must be an array in redis ActiveRecord.');
          }
          if (isset($condition[0])) { // operator format: operator, operand 1, operand 2, ...
              $operator = strtolower($condition[0]);
              if (isset($builders[$operator])) {
                  $method = $builders[$operator];
                  array_shift($condition);
  
                  return $this->$method($operator, $condition, $columns);
              } else {
                  throw new Exception('Found unknown operator in query: ' . $operator);
              }
          } else { // hash format: 'column1' => 'value1', 'column2' => 'value2', ...
  
              return $this->buildHashCondition($condition, $columns);
          }
      }
docs: Parses the condition specification and generates the corresponding Lua expression.
  @param string|array $condition the condition specification. Please refer to [[ActiveQuery::where()]]
  on how to specify a condition.
  @param array $columns the list of columns and aliases to be used
  @return string the generated SQL expression
  @throws \yii\db\Exception if the condition is in bad format
  @throws \yii\base\NotSupportedException if the condition is not an array