better filtering and searching
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189
models/SavedFiltersModel.php
Normal file
189
models/SavedFiltersModel.php
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<?php
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/**
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* SavedFiltersModel
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* Handles saving, loading, and managing user's custom search filters
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*/
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class SavedFiltersModel {
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private $conn;
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public function __construct($conn) {
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$this->conn = $conn;
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}
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/**
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* Get all saved filters for a user
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*/
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public function getUserFilters($userId) {
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$sql = "SELECT filter_id, filter_name, filter_criteria, is_default, created_at, updated_at
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FROM saved_filters
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WHERE user_id = ?
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ORDER BY is_default DESC, filter_name ASC";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("i", $userId);
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$stmt->execute();
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$result = $stmt->get_result();
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$filters = [];
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while ($row = $result->fetch_assoc()) {
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$row['filter_criteria'] = json_decode($row['filter_criteria'], true);
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$filters[] = $row;
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}
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return $filters;
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}
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/**
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* Get a specific saved filter
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*/
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public function getFilter($filterId, $userId) {
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$sql = "SELECT filter_id, filter_name, filter_criteria, is_default
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FROM saved_filters
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WHERE filter_id = ? AND user_id = ?";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("ii", $filterId, $userId);
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$stmt->execute();
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$result = $stmt->get_result();
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if ($row = $result->fetch_assoc()) {
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$row['filter_criteria'] = json_decode($row['filter_criteria'], true);
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return $row;
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}
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return null;
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}
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/**
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* Save a new filter
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*/
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public function saveFilter($userId, $filterName, $filterCriteria, $isDefault = false) {
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// If this is set as default, unset all other defaults for this user
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if ($isDefault) {
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$this->clearDefaultFilters($userId);
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}
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$sql = "INSERT INTO saved_filters (user_id, filter_name, filter_criteria, is_default)
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VALUES (?, ?, ?, ?)
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ON DUPLICATE KEY UPDATE
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filter_criteria = VALUES(filter_criteria),
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is_default = VALUES(is_default),
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updated_at = CURRENT_TIMESTAMP";
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$stmt = $this->conn->prepare($sql);
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$criteriaJson = json_encode($filterCriteria);
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$stmt->bind_param("issi", $userId, $filterName, $criteriaJson, $isDefault);
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if ($stmt->execute()) {
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return [
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'success' => true,
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'filter_id' => $stmt->insert_id ?: $this->getFilterIdByName($userId, $filterName)
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];
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}
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return ['success' => false, 'error' => $this->conn->error];
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}
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/**
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* Update an existing filter
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*/
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public function updateFilter($filterId, $userId, $filterName, $filterCriteria, $isDefault = false) {
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// Verify ownership
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$existing = $this->getFilter($filterId, $userId);
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if (!$existing) {
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return ['success' => false, 'error' => 'Filter not found'];
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}
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// If this is set as default, unset all other defaults for this user
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if ($isDefault) {
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$this->clearDefaultFilters($userId);
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}
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$sql = "UPDATE saved_filters
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SET filter_name = ?, filter_criteria = ?, is_default = ?, updated_at = CURRENT_TIMESTAMP
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WHERE filter_id = ? AND user_id = ?";
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$stmt = $this->conn->prepare($sql);
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$criteriaJson = json_encode($filterCriteria);
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$stmt->bind_param("ssiii", $filterName, $criteriaJson, $isDefault, $filterId, $userId);
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if ($stmt->execute()) {
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return ['success' => true];
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}
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return ['success' => false, 'error' => $this->conn->error];
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}
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/**
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* Delete a saved filter
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*/
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public function deleteFilter($filterId, $userId) {
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$sql = "DELETE FROM saved_filters WHERE filter_id = ? AND user_id = ?";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("ii", $filterId, $userId);
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if ($stmt->execute() && $stmt->affected_rows > 0) {
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return ['success' => true];
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}
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return ['success' => false, 'error' => 'Filter not found'];
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}
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/**
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* Set a filter as default
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*/
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public function setDefaultFilter($filterId, $userId) {
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// First, clear all defaults
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$this->clearDefaultFilters($userId);
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// Then set this one as default
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$sql = "UPDATE saved_filters SET is_default = 1 WHERE filter_id = ? AND user_id = ?";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("ii", $filterId, $userId);
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if ($stmt->execute()) {
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return ['success' => true];
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}
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return ['success' => false, 'error' => $this->conn->error];
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}
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/**
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* Get the default filter for a user
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*/
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public function getDefaultFilter($userId) {
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$sql = "SELECT filter_id, filter_name, filter_criteria
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FROM saved_filters
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WHERE user_id = ? AND is_default = 1
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LIMIT 1";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("i", $userId);
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$stmt->execute();
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$result = $stmt->get_result();
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if ($row = $result->fetch_assoc()) {
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$row['filter_criteria'] = json_decode($row['filter_criteria'], true);
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return $row;
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}
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return null;
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}
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/**
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* Clear all default filters for a user (helper method)
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*/
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private function clearDefaultFilters($userId) {
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$sql = "UPDATE saved_filters SET is_default = 0 WHERE user_id = ?";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("i", $userId);
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$stmt->execute();
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}
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/**
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* Get filter ID by name (helper method)
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*/
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private function getFilterIdByName($userId, $filterName) {
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$sql = "SELECT filter_id FROM saved_filters WHERE user_id = ? AND filter_name = ?";
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$stmt = $this->conn->prepare($sql);
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$stmt->bind_param("is", $userId, $filterName);
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$stmt->execute();
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$result = $stmt->get_result();
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if ($row = $result->fetch_assoc()) {
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return $row['filter_id'];
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}
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return null;
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}
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}
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?>
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