Available conditionals for addAttributeToFilter()

I got a little tired of always referencing a code file in order to remember the conditionals for addAttributeToFilter(). I’ll come back to this post to clean it up and make it an easier reference, but for now it’s just a code reference in an easy place to find it

    /**
     * Build SQL statement for condition
     *
     * If $condition integer or string - exact value will be filtered
     *
     * If $condition is array is - one of the following structures is expected:
     * - array("from"=>$fromValue, "to"=>$toValue)
     * - array("like"=>$likeValue)
     * - array("neq"=>$notEqualValue)
     * - array("in"=>array($inValues))
     * - array("nin"=>array($notInValues))
     *
     * If non matched - sequential array is expected and OR conditions
     * will be built using above mentioned structure
     *
     * @param string $fieldName
     * @param integer|string|array $condition
     * @return string
     */
    protected function _getConditionSql($fieldName, $condition) {
        if (is_array($fieldName)) {
            foreach ($fieldName as $f) {
                $orSql = array();
                foreach ($condition as $orCondition) {
                    $orSql[] = "(".$this->_getConditionSql($f[0], $f[1]).")";
                }
                $sql = "(".join(" or ", $orSql).")";
            }
            return $sql;
        }

        $sql = '';
        $fieldName = $this->_getConditionFieldName($fieldName);
        if (is_array($condition)) {
            if (isset($condition['from']) || isset($condition['to'])) {
                if (isset($condition['from'])) {
                    if (empty($condition['date'])) {
                        if ( empty($condition['datetime'])) {
                            $from = $condition['from'];
                        }
                        else {
                            $from = $this->getConnection()->convertDateTime($condition['from']);
                        }
                    }
                    else {
                        $from = $this->getConnection()->convertDate($condition['from']);
                    }
                    $sql.= $this->getConnection()->quoteInto("$fieldName >= ?", $from);
                }
                if (isset($condition['to'])) {
                    $sql.= empty($sql) ? '' : ' and ';

                    if (empty($condition['date'])) {
                        if ( empty($condition['datetime'])) {
                            $to = $condition['to'];
                        }
                        else {
                            $to = $this->getConnection()->convertDateTime($condition['to']);
                        }
                    }
                    else {
                        $to = $this->getConnection()->convertDate($condition['to']);
                    }

                    $sql.= $this->getConnection()->quoteInto("$fieldName <= ?", $to);
                }
            }
            elseif (isset($condition['eq'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName = ?", $condition['eq']);
            }
            elseif (isset($condition['neq'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName != ?", $condition['neq']);
            }
            elseif (isset($condition['like'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName like ?", $condition['like']);
            }
            elseif (isset($condition['nlike'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName not like ?", $condition['nlike']);
            }
            elseif (isset($condition['in'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName in (?)", $condition['in']);
            }
            elseif (isset($condition['nin'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName not in (?)", $condition['nin']);
            }
            elseif (isset($condition['is'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName is ?", $condition['is']);
            }
            elseif (isset($condition['notnull'])) {
                $sql = "$fieldName is NOT NULL";
            }
            elseif (isset($condition['null'])) {
                $sql = "$fieldName is NULL";
            }
            elseif (isset($condition['moreq'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName >= ?", $condition['moreq']);
            }
            elseif (isset($condition['gt'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName > ?", $condition['gt']);
            }
            elseif (isset($condition['lt'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName < ?", $condition['lt']);
            }
            elseif (isset($condition['gteq'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName >= ?", $condition['gteq']);
            }
            elseif (isset($condition['lteq'])) {
                $sql = $this->getConnection()->quoteInto("$fieldName <= ?", $condition['lteq']);
            }
            elseif (isset($condition['finset'])) {
                $sql = $this->getConnection()->quoteInto("find_in_set(?,$fieldName)", $condition['finset']);
            }
            else {
                $orSql = array();
                foreach ($condition as $orCondition) {
                    $orSql[] = "(".$this->_getConditionSql($fieldName, $orCondition).")";
                }
                $sql = "(".join(" or ", $orSql).")";
            }
        } else {
            $sql = $this->getConnection()->quoteInto("$fieldName = ?", (string)$condition);
        }
        return $sql;
    }