modules/top_node/top_node.module

<?php
// $Id$

/**
 * @file
 * Allows administrators to map arbitrary paths to the top nodes in selected views.
 */

function top_node_menu($may_cache = FALSE) {
  $items = array();
  if ($may_cache) {
    $items[] = array('path' => 'admin/build/top_node',
      'title' => t('Top nodes'),
      'callback' => 'top_node_admin_page',
      'access' => user_access('administer top nodes'),
      'description' => t('Set up url paths that display a node from a dynamically updated list. Useful for urls like news/today or comic/latest that should display a single node that changes regularly.'),
      'type' => MENU_NORMAL_ITEM
    );
    $items[] = array('path' => 'admin/build/top_node/list',
      'title' => t('List'),
      'callback' => 'top_node_admin_page',
      'access' => user_access('administer top nodes'),
      'type' => MENU_DEFAULT_LOCAL_TASK,
      'weight' => '-1'
    );
    $items[] = array('path' => 'admin/build/top_node/add',
      'title' => t('Add'),
      'callback' => 'top_node_admin_add_page',
      'access' => user_access('administer top nodes'),
      'type' => MENU_LOCAL_TASK
    );
    $items[] = array('path' => 'admin/build/top_node/edit',
      'title' => t('Edit'),
      'callback' => 'top_node_admin_edit_page',
      'access' => user_access('administer top nodes'),
      'type' => MENU_CALLBACK
    );
  } else {
    $paths = variable_get('top_node_paths', _top_node_default_paths());
    foreach ($paths as $path => $data) {
      $items[] = array(
        'path' => $path,
        'callback' => '_top_node_show_node',
        'callback arguments' => array($data, $path),
        'access' => TRUE,
      );
    }
  }
  return $items;
}

function top_node_perm() {
  return array('administer top nodes');
}

function top_node_admin_page() {
  $paths = variable_get('top_node_paths', _top_node_default_paths());

  $headers = array(t('Path'), t('View'), t('Cache'),  t('Redirect'), '');
  $items = array();
  foreach ($paths as $path => $data) {
    $items[] = array(
      l($path, $path),
      $data['view'],
      !empty($data['cache']) ? t('Yes') : t('No'),
      !empty($data['redirect']) ? t('Yes') : t('No'),
      l(t('Edit'), 'admin/build/top_node/edit/'. str_replace('/', '|', $path)),
    );
  }
  if (!empty($items)) {
    $output = theme('table', $headers, $items, array("cellpadding" => "4"), t('Existing Top Node paths'));
  }
  else {
    $output .= '<p>'. t('No Top Node paths have currently been defined.') .'</p>';
  }
  return $output;
}

function top_node_admin_add_page() {
  drupal_set_title(t('Add Top Node path'));
  return drupal_get_form('top_node_edit_form');
}

function top_node_admin_edit_page($editpath = NULL) {
  $editpath = str_replace('|', '/', $editpath);
  $path = array();

  $paths = variable_get('top_node_paths', _top_node_default_paths());
  if (!empty($paths[$editpath])) {
    $path = $paths[$editpath];
  }
  $path['path'] = $editpath;

  drupal_set_title(t('Edit Top Node path: !path', array('!path' => $editpath)));
  return drupal_get_form('top_node_edit_form', $path);
}

function top_node_edit_form($data = array()) {
  $form = array();
  $form['path'] = array(
    '#type' => 'textfield',
    '#required' => TRUE,
    '#title' => t('Path'),
    '#description' => t('The URL path for this top node. For example, comic/latest.'),
    '#default_value' => $data['path'],
  );
  $options = array();
  include_once(drupal_get_path('module', 'views') . '/views_cache.inc');
  $default_views = _views_get_default_views();

  $res = db_query("SELECT name FROM {view_view} ORDER BY name");
  while ($view = db_fetch_object($res)) {
    $options[$view->name] = $view->name; 
  }
  
  if(is_array($default_views)) {
    foreach($default_views as $key => $view) {
      $options[$key] = $view->name;
    }
  }

  $form['view'] = array(
    '#type' => 'select',
    '#title' => t('View'),
    '#required' => TRUE,
    '#options' => $options,
    '#description' => t('The view from which the top node should be selected.'),
    '#default_value' => $data['view']
  );

  $form['args'] = array(
    '#type' => 'textarea',
    '#title' => t('View arguments'),
    '#required' => FALSE,
    '#rows' => 3,
    '#description' => t('A return-delimited list of arguments to pass into the selected view.'),
    '#default_value' => !empty($data['args']) ? implode("\n", $data['args']) : '',
  );

  $period = array(0 => t('Never'));
  $period += drupal_map_assoc(array(600, 3600, 10800, 21600, 32400, 43200, 86400), 'format_interval');

  $form['cache'] = array(
    '#type' => 'select',
    '#title' => t('Cache lifespan'),
    '#options' => $period,
    '#description' => t('On high-traffic sites, or sites where the top node at this path changes infrequently, caching the node can reduce database load considerably.'),
    '#default_value' => $data['cache'],
  );

  $form['redirect'] = array(
    '#type' => 'checkbox',
    '#title' => t('Redirect to node page'),
    '#description' => t("By default, a top node is displayed at the url path you define. When this option is selected, users will be redirected to the node's native path (node/1, for example)."),
    '#default_value' => $data['redirect'],
  );

  $form['buttons']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Submit'),
  );
  if (!empty($data['path'])) {
    $form['buttons']['delete'] = array(
      '#type' => 'submit',
      '#value' => t('Delete'),
    );
  }

  return $form;
}

function top_node_edit_form_validate($form_id, $form_values) {
  $path = 'http://www.example.com'. $form_values['path'];
  if (!valid_url($path)) {
    form_set_error('path', t('The URL path you specified is invalid.'));
  }
}

function top_node_edit_form_submit($form_id, $form_values) {
  $paths = variable_get('top_node_paths', _top_node_default_paths());
  $path = $form_values['path'];

  if ($form_values['op'] == t('Delete')) {
    unset($paths[$path]);
  }
  else {
    $paths[$path] = $form_values;

    $paths[$path]['args'] = explode("\n", $form_values['args']);
    unset($paths[$path]['path']);
    unset($paths[$path]['op']);
  }
  
  variable_set('top_node_paths', $paths);
  return 'admin/build/top_node';
}

function _top_node_default_paths() {
  $paths = array();
  $paths['top_node'] = array(
    'view' => 'tracker',
    'args' => array(),
    'cache' => FALSE,
    'redirect' => FALSE,
  );
  return $paths;
}

function _top_node_show_node($data = array(), $path) {
  if ($data['cache'] && $cache = cache_get('top_node:'. $path)) {
    $nid = $cache->data;
  } else {
    $view = views_get_view($data['view']);
    $result = views_build_view('items', $view, $data['args'], FALSE, 1);
    if (count($result['items'])) {
      $nid = $result['items'][0]->nid;
    }
    if ($data['cache']) {
      cache_set('top_node:'. $path, 'cache', $nid, time() + $data['cache']);
    }
  }

  if ($data['redirect']) {
    drupal_goto('node/'. $nid);
  }

  if ($node = node_load($nid)) {
    return node_page_view($node);
  }
  else {
    drupal_not_found();
  }
}
1	<?php
2	// $Id$
3
4	/**
5	* @file
6	* Allows administrators to map arbitrary paths to the top nodes in selected views.
7	*/
8
9	function top_node_menu($may_cache = FALSE) {
10	$items = array();
11	if ($may_cache) {
12	$items[] = array('path' => 'admin/build/top_node',
13	'title' => t('Top nodes'),
14	'callback' => 'top_node_admin_page',
15	'access' => user_access('administer top nodes'),
16	'description' => t('Set up url paths that display a node from a dynamically updated list. Useful for urls like news/today or comic/latest that should display a single node that changes regularly.'),
17	'type' => MENU_NORMAL_ITEM
18	);
19	$items[] = array('path' => 'admin/build/top_node/list',
20	'title' => t('List'),
21	'callback' => 'top_node_admin_page',
22	'access' => user_access('administer top nodes'),
23	'type' => MENU_DEFAULT_LOCAL_TASK,
24	'weight' => '-1'
25	);
26	$items[] = array('path' => 'admin/build/top_node/add',
27	'title' => t('Add'),
28	'callback' => 'top_node_admin_add_page',
29	'access' => user_access('administer top nodes'),
30	'type' => MENU_LOCAL_TASK
31	);
32	$items[] = array('path' => 'admin/build/top_node/edit',
33	'title' => t('Edit'),
34	'callback' => 'top_node_admin_edit_page',
35	'access' => user_access('administer top nodes'),
36	'type' => MENU_CALLBACK
37	);
38	} else {
39	$paths = variable_get('top_node_paths', _top_node_default_paths());
40	foreach ($paths as $path => $data) {
41	$items[] = array(
42	'path' => $path,
43	'callback' => '_top_node_show_node',
44	'callback arguments' => array($data, $path),
45	'access' => TRUE,
46	);
47	}
48	}
49	return $items;
50	}
51
52	function top_node_perm() {
53	return array('administer top nodes');
54	}
55
56	function top_node_admin_page() {
57	$paths = variable_get('top_node_paths', _top_node_default_paths());
58
59	$headers = array(t('Path'), t('View'), t('Cache'), t('Redirect'), '');
60	$items = array();
61	foreach ($paths as $path => $data) {
62	$items[] = array(
63	l($path, $path),
64	$data['view'],
65	!empty($data['cache']) ? t('Yes') : t('No'),
66	!empty($data['redirect']) ? t('Yes') : t('No'),
67	l(t('Edit'), 'admin/build/top_node/edit/'. str_replace('/', '\|', $path)),
68	);
69	}
70	if (!empty($items)) {
71	$output = theme('table', $headers, $items, array("cellpadding" => "4"), t('Existing Top Node paths'));
72	}
73	else {
74	$output .= '<p>'. t('No Top Node paths have currently been defined.') .'</p>';
75	}
76	return $output;
77	}
78
79	function top_node_admin_add_page() {
80	drupal_set_title(t('Add Top Node path'));
81	return drupal_get_form('top_node_edit_form');
82	}
83
84	function top_node_admin_edit_page($editpath = NULL) {
85	$editpath = str_replace('\|', '/', $editpath);
86	$path = array();
87
88	$paths = variable_get('top_node_paths', _top_node_default_paths());
89	if (!empty($paths[$editpath])) {
90	$path = $paths[$editpath];
91	}
92	$path['path'] = $editpath;
93
94	drupal_set_title(t('Edit Top Node path: !path', array('!path' => $editpath)));
95	return drupal_get_form('top_node_edit_form', $path);
96	}
97
98	function top_node_edit_form($data = array()) {
99	$form = array();
100	$form['path'] = array(
101	'#type' => 'textfield',
102	'#required' => TRUE,
103	'#title' => t('Path'),
104	'#description' => t('The URL path for this top node. For example, comic/latest.'),
105	'#default_value' => $data['path'],
106	);
107	$options = array();
108	include_once(drupal_get_path('module', 'views') . '/views_cache.inc');
109	$default_views = _views_get_default_views();
110
111	$res = db_query("SELECT name FROM {view_view} ORDER BY name");
112	while ($view = db_fetch_object($res)) {
113	$options[$view->name] = $view->name;
114	}
115
116	if(is_array($default_views)) {
117	foreach($default_views as $key => $view) {
118	$options[$key] = $view->name;
119	}
120	}
121
122	$form['view'] = array(
123	'#type' => 'select',
124	'#title' => t('View'),
125	'#required' => TRUE,
126	'#options' => $options,
127	'#description' => t('The view from which the top node should be selected.'),
128	'#default_value' => $data['view']
129	);
130
131	$form['args'] = array(
132	'#type' => 'textarea',
133	'#title' => t('View arguments'),
134	'#required' => FALSE,
135	'#rows' => 3,
136	'#description' => t('A return-delimited list of arguments to pass into the selected view.'),
137	'#default_value' => !empty($data['args']) ? implode("\n", $data['args']) : '',
138	);
139
140	$period = array(0 => t('Never'));
141	$period += drupal_map_assoc(array(600, 3600, 10800, 21600, 32400, 43200, 86400), 'format_interval');
142
143	$form['cache'] = array(
144	'#type' => 'select',
145	'#title' => t('Cache lifespan'),
146	'#options' => $period,
147	'#description' => t('On high-traffic sites, or sites where the top node at this path changes infrequently, caching the node can reduce database load considerably.'),
148	'#default_value' => $data['cache'],
149	);
150
151	$form['redirect'] = array(
152	'#type' => 'checkbox',
153	'#title' => t('Redirect to node page'),
154	'#description' => t("By default, a top node is displayed at the url path you define. When this option is selected, users will be redirected to the node's native path (node/1, for example)."),
155	'#default_value' => $data['redirect'],
156	);
157
158	$form['buttons']['submit'] = array(
159	'#type' => 'submit',
160	'#value' => t('Submit'),
161	);
162	if (!empty($data['path'])) {
163	$form['buttons']['delete'] = array(
164	'#type' => 'submit',
165	'#value' => t('Delete'),
166	);
167	}
168
169	return $form;
170	}
171
172	function top_node_edit_form_validate($form_id, $form_values) {
173	$path = 'http://www.example.com'. $form_values['path'];
174	if (!valid_url($path)) {
175	form_set_error('path', t('The URL path you specified is invalid.'));
176	}
177	}
178
179	function top_node_edit_form_submit($form_id, $form_values) {
180	$paths = variable_get('top_node_paths', _top_node_default_paths());
181	$path = $form_values['path'];
182
183	if ($form_values['op'] == t('Delete')) {
184	unset($paths[$path]);
185	}
186	else {
187	$paths[$path] = $form_values;
188
189	$paths[$path]['args'] = explode("\n", $form_values['args']);
190	unset($paths[$path]['path']);
191	unset($paths[$path]['op']);
192	}
193
194	variable_set('top_node_paths', $paths);
195	return 'admin/build/top_node';
196	}
197
198	function _top_node_default_paths() {
199	$paths = array();
200	$paths['top_node'] = array(
201	'view' => 'tracker',
202	'args' => array(),
203	'cache' => FALSE,
204	'redirect' => FALSE,
205	);
206	return $paths;
207	}
208
209	function _top_node_show_node($data = array(), $path) {
210	if ($data['cache'] && $cache = cache_get('top_node:'. $path)) {
211	$nid = $cache->data;
212	} else {
213	$view = views_get_view($data['view']);
214	$result = views_build_view('items', $view, $data['args'], FALSE, 1);
215	if (count($result['items'])) {
216	$nid = $result['items'][0]->nid;
217	}
218	if ($data['cache']) {
219	cache_set('top_node:'. $path, 'cache', $nid, time() + $data['cache']);
220	}
221	}
222
223	if ($data['redirect']) {
224	drupal_goto('node/'. $nid);
225	}
226
227	if ($node = node_load($nid)) {
228	return node_page_view($node);
229	}
230	else {
231	drupal_not_found();
232	}
233	}