GB-Drupal

css/guestbook.css

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+/* Messages style. */
+.guestbook-messages {
+  width: 100%;
+  height: auto;
+  float: left;
+  margin-top: 10px;
+  margin-bottom: 10px;
+  overflow: auto;
+  text-align: left;
+  background: #e1f1ff;
+  padding: 5px;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+
+/* Button style. */
+.guestbook-button {
+  background: -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #ededed), color-stop(1, #bab1ba));
+  background: -moz-linear-gradient(top, #ededed 5%, #bab1ba 100%);
+  background: -webkit-linear-gradient(top, #ededed 5%, #bab1ba 100%);
+  background: -o-linear-gradient(top, #ededed 5%, #bab1ba 100%);
+  background: -ms-linear-gradient(top, #ededed 5%, #bab1ba 100%);
+  background: linear-gradient(to bottom, #ededed 5%, #bab1ba 100%);
+  filter:progid: DXImageTransform.Microsoft.gradient(startColorstr='#ededed', endColorstr='#bab1ba',GradientType=0);
+  background-color: #ededed;
+  -moz-border-radius: 10px;
+  -webkit-border-radius: 10px;
+  border-radius: 10px;
+  border: 1px solid #d6bcd6;
+  display: inline-block;
+  cursor: pointer;
+  color: #3a8a9e;
+  font-family: arial;
+  font-size: 12px;
+  padding:5px 15px;
+  text-decoration: none;
+  text-shadow: 0px 1px 0px #e1e2ed;
+  margin-left: 5px;
+}
+.guestbook-button:hover {
+  background: -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #bab1ba), color-stop(1, #ededed));
+  background: -moz-linear-gradient(top, #bab1ba 5%, #ededed 100%);
+  background: -webkit-linear-gradient(top, #bab1ba 5%, #ededed 100%);
+  background: -o-linear-gradient(top, #bab1ba 5%, #ededed 100%);
+  background: -ms-linear-gradient(top, #bab1ba 5%, #ededed 100%);
+  background: linear-gradient(to bottom, #bab1ba 5%, #ededed 100%);
+  filter:progid: DXImageTransform.Microsoft.gradient(startColorstr = '#bab1ba', endColorstr = '#ededed',GradientType = 0);
+  background-color: #bab1ba;
+}
+.guestbook-button:active {
+  position: relative;
+  top: 1px;
+}

guestbook.info

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+name = Guest Book
+description = Guestbook.
+core = 7.x
+version = 7.x-1.0
+files[] = css/guestbook.css

guestbook.install

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+<?php 
+function guestbook_schema() {
+  $schema['guestbook_drupal'] = array(
+    // Specification for table "node".
+    'description' => 'The base table for guestbook.',
+    'fields' => array(
+	  'id' => array(
+        'description' => 'The primary identifier for a message.',
+        'type' => 'serial',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+      'uid' => array(
+        'description' => 'Identifier for a user.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+      'sid' => array(
+        'description' => 'Identifier for a session id.',
+        'type' => 'varchar',
+        'length' => 100,
+        'not null' => TRUE,
+        'default' => '',
+      ),
+      'date' => array(
+        'description' => 'Message date.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+      'message' => array(
+        'description' => 'The message by user.',
+        'type' => 'varchar',
+        'length' => 100,
+        'not null' => TRUE,
+        'default' => '',
+      ),
+    ),
+    'unique keys' => array(
+      'id' => array(
+        'id',
+      ),
+    ),
+  );
+  return $schema;
+}

guestbook.module

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+<?php
+module_load_include('inc', 'guestbook', 'include/guestbook_db');
+module_load_include('inc', 'guestbook', 'include/guestbook_core');
+module_load_include('inc', 'guestbook', 'include/guestbook.theme');
+module_load_include('inc', 'guestbook', 'include/guestbook_weather');
+
+/**
+* @file
+* Build page, form for guestbook and weather block.
+*/
+
+/**
+* Implements hook_menu(). 
+*/
+ function guestbook_menu() {
+   $items = array();
+   // Main page.
+   $items['guestbook-page'] = array(
+     'title' => 'Guestbook',
+     'page callback'   => 'drupal_get_form',
+     'page arguments'  => array('guestbook_page_form'),
+     'access callback' => TRUE,
+  );
+   // Edit message.
+   $items['guestbook-page/%mid/edit'] = array(
+     'title'            => 'Guestbook',
+     'page callback'    => 'drupal_get_form',
+     'page arguments'   => array('guestbook_page_form', 1),
+     'access callback'  => TRUE,
+     'type'             => MENU_CALLBACK,
+
+   );
+   // Delete message.
+   $items['guestbook-page/%mid/delete'] = array(
+     'title'            => 'Delete message',
+     'page callback'    => 'guestbook_message_delete',
+     'page arguments'   => array(1),
+     'access callback'  => TRUE,
+     'type'             => MENU_CALLBACK,
+   );
+   return $items;
+}
+
+/**
+ * Implements hook_form.
+ *
+ * @param $value
+ *   Implements hook_load
+ *   contains array('id', 'uid', 'sid', 'date', 'message').
+ * @return
+ *   Return form.
+ */
+function guestbook_page_form($form, $form_state, $value= NULL) {
+  global $user;
+  // Text for editing.
+  $text_edit = NULL;
+
+  // Get html list of messages.
+  $text = guestbook_html();
+
+  $form = [];
+
+  if (isset($value['id'])) {
+    // Get tex for editing.
+    $text_edit = $value['message'];
+    $form['infoById'] = array('#type' => 'value', '#value' => $value);
+  }
+
+  $form['#attached']['css'][] = drupal_get_path('module', 'guestbook') . '/css/guestbook.css';
+
+  $form['message_window'] = [
+    // Show messages if it exists.
+    '#markup' => $text,
+  ];
+
+  // Show area for input text if user is logged.
+  if ($user->uid) {
+    $form['message'] = [
+      '#type' => 'textarea',
+      '#title' => t('message'),
+      '#size' => 1000,
+      '#default_value' => $text_edit,
+    ];
+
+    $form['submit'] = [
+      '#type' => 'submit',
+      '#attributes' => array('class' => array('guestbook-button')),
+      '#value' => isset($value['id']) ? t('Edit') : t('Save'),
+    ];
+
+    // Show or hide the cancel button.
+    if (isset($value['id'])) {
+      $form['cancel_button'] = [
+        '#type' => 'link',
+        '#title' => t('Cancel'),
+        '#href' => 'guestbook-page',
+        '#options' => array('query' => drupal_get_query_parameters()),
+        '#attributes' => array('class' => array('guestbook-button')),
+
+      ];
+    }
+  }
+  return $form;
+}
+
+/**
+ * Validate guestbook_page_form.
+*/
+function guestbook_page_form_validate($form, &$form_state) {
+  if (drupal_strlen($form_state['values']['message']) > 1000 || empty($form_state['values']['message'])) {
+    form_set_error('message', t('Field "@fieldname" must be less than @c chars and cant be empty .',
+      array('@fieldname' => t('message'), '@c' => 1000)));
+  }
+}
+
+/**
+ * Submit for guestbook_page_form.
+ */
+function guestbook_page_form_submit($form, &$form_state) {
+  guestbook_save_edit_db($form_state);
+}
+
+/**
+ * Loads a message info.
+ *
+ * @param $mid
+ *   Integer specifying the message id to load.
+ * @return
+ *   A fully-loaded array of message info ('id', 'uid', 'sid', 'date', 'message').
+ *   id - message id; uid - user id; sid - session id; date - message creation date; message - message text.
+ */
+function mid_load($mid) {
+  $query = db_select('guestbook_drupal', 't')
+    ->fields('t', array('id', 'uid', 'sid', 'date', 'message'))
+    ->condition('t.id', $mid)
+    ->execute();
+  $value = $query->fetchAssoc();
+  return $value;
+}
+
+/*
+ * Implements hook_cron().
+ */
+function guestbook_cron() {
+  guestbook_get_xml_weather();
+}
+
+/*
+ * Implements hook_block_info().
+ */
+function guestbook_block_info() {
+  // Build weather block.
+  $blocks['weather'] = array(
+    'info' => t('The Weather'),
+    'cache' => DRUPAL_CACHE_GLOBAL,
+    'region' => 'sidebar_first',
+    'status' => TRUE,
+    'weight' => -10,
+  );
+  return $blocks;
+}
+
+/*
+ * Implements hook_block_view().
+ */
+function guestbook_block_view($delta = '') {
+  $block = [];
+  switch($delta){
+
+    case 'weather':
+      $block['subject'] = t('Vitebsk Weather');
+      // Get prepared html data.
+      $block['content'] = guestbook_weather();
+      break;
+  }
+  return $block;
+}

include/guestbook.theme.inc

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+<?php
+/**
+ * @file
+ * The implementation of the theme functions.
+ */
+
+/**
+ * Generates messages html markup.
+ *
+ * @return
+ *   Html markup.
+ */
+function guestbook_html() {
+  global $user;
+
+  // Variable $mes is fully generated html markup.
+  $mes = NULL;
+
+  // Get messages data array from database.
+  $variables = guestbook_read_db('guestbook_drupal', 'id', 'DESC', '10');
+
+  foreach ($variables as $value) {
+    // Get message creation date.
+    $date = format_date($value['3'], $type = 'medium', $format = '', $timezone = NULL, $langcode = NULL);
+    // Get user name.
+    $name = guestbook_name_by_id($value['1']);
+    // Generate html markup for date and name.
+    $data = '<div><em>'.$date.'  '.$name.'</em></div>';
+    // Get message and generate html markup for it.
+    $message = '<div><b>'.check_plain($value['4']).'</b></div>';
+
+    // If user is logged and current session id = stored id in database
+    // then generate html markup for edit button and delete button.
+    if ($user->uid) {
+      if ($value['2'] == $user->sid) {
+        $params = drupal_get_query_parameters();
+        $message .= l(t('edit'), 'guestbook-page/' . $value['0'] . '/edit', array('attributes' => array('class' => array('guestbook-button')), 'query' => $params))
+        . l(t('delete'), 'guestbook-page/' . $value['0'] . '/delete', array('attributes' => array('class' => array('guestbook-button')), 'query' => $params));
+      }
+    }
+    $mes .= '<div class = "guestbook-messages">' . $data . $message . '</div>';
+  }
+
+  $mes .= theme('pager');
+  return '<div class = "guestbook-messages-all">' . $mes . '</div>';
+}

include/guestbook_core.inc

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+<?php
+/**
+ * @file
+ * Implementation of user functions.
+ */
+
+/**
+ * Get current time.
+ *
+ * @return
+ *   Return time stamp.
+ */
+function guestbook_time() {
+  $date = new DateTime();
+  return $date->getTimestamp();
+}