diff --git a/admin/tool/mobile/classes/api.php b/admin/tool/mobile/classes/api.php
index b12a32abbe8..c7edfc3ec89 100644
--- a/admin/tool/mobile/classes/api.php
+++ b/admin/tool/mobile/classes/api.php
@@ -393,6 +393,12 @@ class api {
             $settings->tool_dataprivacy_showdataretentionsummary = get_config('tool_dataprivacy', 'showdataretentionsummary');
         }
 
+        if (empty($section) || $section === 'blog') {
+            $settings->useblogassociations = $CFG->useblogassociations;
+            $settings->bloglevel = $CFG->bloglevel;
+            $settings->blogusecomments = $CFG->blogusecomments;
+        }
+
         if (empty($section) || $section === 'h5psettings') {
             \core_h5p\local\library\autoloader::register();
             $customcss = \core_h5p\file_storage::get_custom_styles();
diff --git a/admin/tool/mobile/tests/externallib_test.php b/admin/tool/mobile/tests/externallib_test.php
index c93dd4a9e1b..a0ce7027c3f 100644
--- a/admin/tool/mobile/tests/externallib_test.php
+++ b/admin/tool/mobile/tests/externallib_test.php
@@ -270,6 +270,10 @@ class externallib_test extends externallib_advanced_testcase {
         $expected[] = ['name' => 'tool_dataprivacy_contactdataprotectionofficer', 'value' => get_config('tool_dataprivacy', 'contactdataprotectionofficer')];
         $expected[] = ['name' => 'tool_dataprivacy_showdataretentionsummary', 'value' => get_config('tool_dataprivacy', 'showdataretentionsummary')];
 
+        $expected[] = ['name' => 'useblogassociations', 'value' => $CFG->useblogassociations];
+        $expected[] = ['name' => 'bloglevel', 'value' => $CFG->bloglevel];
+        $expected[] = ['name' => 'blogusecomments', 'value' => $CFG->blogusecomments];
+
         $this->assertCount(0, $result['warnings']);
         $this->assertEquals($expected, $result['settings']);
 
@@ -282,6 +286,7 @@ class externallib_test extends externallib_advanced_testcase {
 
         $customcss = \core_h5p\file_storage::get_custom_styles();
         $expected[] = ['name' => 'h5pcustomcssurl', 'value' => $customcss['cssurl']->out() . '?ver=' . $customcss['cssversion']];
+
         $this->assertCount(0, $result['warnings']);
         $this->assertEquals($expected, $result['settings']);
 
diff --git a/blog/classes/external/post_exporter.php b/blog/classes/external/post_exporter.php
index fcc97b88d2b..a8616a7cc28 100644
--- a/blog/classes/external/post_exporter.php
+++ b/blog/classes/external/post_exporter.php
@@ -178,10 +178,18 @@ class post_exporter extends exporter {
                 'multiple' => true,
                 'optional' => true,
             ),
+            'canedit' => array(
+                'type' => PARAM_BOOL,
+                'description' => 'Whether the user can edit the post.',
+                'optional' => true,
+            ),
         );
     }
 
     protected function get_other_values(renderer_base $output) {
+        global $CFG;
+        require_once($CFG->dirroot . '/blog/lib.php');
+
         $context = context_system::instance(); // Files always on site context.
 
         $values['summaryfiles'] = external_util::get_area_files($context->id, 'blog', 'post', $this->data->id);
@@ -192,6 +200,7 @@ class post_exporter extends exporter {
         } else {
             $values['tags'] = \core_tag\external\util::get_item_tags('core', 'post', $this->data->id);
         }
+        $values['canedit'] = blog_user_can_edit_entry($this->data);
 
         return $values;
     }
diff --git a/blog/edit.php b/blog/edit.php
index 2c77cbb998d..581abca02b3 100644
--- a/blog/edit.php
+++ b/blog/edit.php
@@ -54,9 +54,7 @@ $entry = new stdClass();
 $entry->id = null;
 
 if ($id) {
-    if (!$entry = new blog_entry($id)) {
-        throw new \moodle_exception('wrongentryid', 'blog');
-    }
+    $entry = new blog_entry($id);   // Will trigger exception if not found.
     $userid = $entry->userid;
 } else {
     $userid = $USER->id;
@@ -125,7 +123,7 @@ if ($action === 'delete') {
     comment::init();
 
     if (empty($entry->id)) {
-        throw new \moodle_exception('wrongentryid', 'blog');
+        throw new \moodle_exception('wrongentryid');
     }
     if (data_submitted() && $confirm && confirm_sesskey()) {
         // Make sure the current user is the author of the blog entry, or has some deleteanyentry capability.
@@ -190,9 +188,7 @@ if (!empty($entry->id)) {
     }
 }
 
-$summaryoptions = array('maxfiles' => 99, 'maxbytes' => $CFG->maxbytes, 'trusttext' => true, 'context' => $sitecontext,
-    'subdirs' => file_area_contains_subdirs($sitecontext, 'blog', 'post', $entry->id));
-$attachmentoptions = array('subdirs' => false, 'maxfiles' => 99, 'maxbytes' => $CFG->maxbytes);
+[$summaryoptions, $attachmentoptions] = blog_get_editor_options($entry);
 
 $blogeditform = new blog_edit_form(null, compact('entry',
                                                  'summaryoptions',
@@ -232,7 +228,7 @@ if ($blogeditform->is_cancelled()) {
 
         case 'edit':
             if (empty($entry->id)) {
-                throw new \moodle_exception('wrongentryid', 'blog');
+                throw new \moodle_exception('wrongentryid');
             }
 
             $entry->edit($data, $blogeditform, $summaryoptions, $attachmentoptions);
@@ -272,7 +268,7 @@ switch ($action) {
 
     case 'edit':
         if (empty($entry->id)) {
-            throw new \moodle_exception('wrongentryid', 'blog');
+            throw new \moodle_exception('wrongentryid');
         }
         $strformheading = get_string('updateentrywithid', 'blog');
 
diff --git a/blog/lib.php b/blog/lib.php
index 0d4bb4ed8bf..b98ac2e4766 100644
--- a/blog/lib.php
+++ b/blog/lib.php
@@ -1306,3 +1306,26 @@ function blog_validate_access($courseid, $modid, $groupid, $entryid, $userid) {
     }
     return array($courseid, $userid);
 }
+
+/**
+ * Get blog editor and attachment options for when creating or updating an entry
+ *
+ * @param mixed $entry The entry object (can be null)
+ * @return array editor and attachment options
+ */
+function blog_get_editor_options(mixed $entry = null): array {
+    global $CFG;
+
+    if (is_null($entry)) {
+        $entry = new stdClass();
+        $entry->id = null;
+    }
+
+    $sitecontext = context_system::instance();
+
+    $summaryoptions = ['maxfiles' => 99, 'maxbytes' => $CFG->maxbytes, 'trusttext' => true, 'context' => $sitecontext,
+        'subdirs' => file_area_contains_subdirs($sitecontext, 'blog', 'post', $entry->id)];
+    $attachmentoptions = ['subdirs' => false, 'maxfiles' => 99, 'maxbytes' => $CFG->maxbytes];
+
+    return [$summaryoptions, $attachmentoptions];
+}
diff --git a/blog/locallib.php b/blog/locallib.php
index 979b17ceeed..d6ad0880f48 100644
--- a/blog/locallib.php
+++ b/blog/locallib.php
@@ -135,12 +135,13 @@ class blog_entry implements renderable {
      * Constructor. If given an id, will fetch the corresponding record from the DB.
      *
      * @param mixed $idorparams A blog entry id if INT, or data for a new entry if array
+     * @throws moodle_exception
      */
     public function __construct($id=null, $params=null, $form=null) {
         global $DB, $PAGE, $CFG;
 
         if (!empty($id)) {
-            $object = $DB->get_record('post', array('id' => $id));
+            $object = $DB->get_record('post', array('id' => $id), '*', MUST_EXIST);
             foreach ($object as $var => $val) {
                 $this->$var = $val;
             }
diff --git a/blog/tests/external/external_test.php b/blog/tests/external/external_test.php
index c1dc8f13b46..04feb2e44a4 100644
--- a/blog/tests/external/external_test.php
+++ b/blog/tests/external/external_test.php
@@ -119,6 +119,7 @@ class external_test extends \advanced_testcase {
         $this->assertEquals('tag1', $result['entries'][0]['tags'][0]['rawname']);
 
         $this->assertEquals($this->postid, $result['entries'][0]['id']);
+        $this->assertFalse($result['entries'][0]['canedit']);
     }
 
     /**
@@ -266,6 +267,7 @@ class external_test extends \advanced_testcase {
         $result = external_api::clean_returnvalue(\core_blog\external::get_entries_returns(), $result);
         $this->assertCount(1, $result['entries']);
         $this->assertEquals($this->postid, $result['entries'][0]['id']);
+        $this->assertTrue($result['entries'][0]['canedit']);
     }
 
     /**
@@ -283,6 +285,7 @@ class external_test extends \advanced_testcase {
         $result = external_api::clean_returnvalue(\core_blog\external::get_entries_returns(), $result);
         $this->assertCount(1, $result['entries']);
         $this->assertEquals($this->postid, $result['entries'][0]['id']);
+        $this->assertTrue($result['entries'][0]['canedit']);
     }
 
     /**
diff --git a/blog/upgrade.txt b/blog/upgrade.txt
index 644ea08ae2a..af73a733f2f 100644
--- a/blog/upgrade.txt
+++ b/blog/upgrade.txt
@@ -1,6 +1,9 @@
 This files describes API changes in /blog/* ,
 information provided here is intended especially for developers.
 
+=== 4.4 ===
+  * The blog_entry class constructor now throws an exception if the indicated entry id does not exist.
+
 === 3.7 ===
   * External function get_entries now returns an additional field "tags" returning the post tags.
 
diff --git a/lang/en/blog.php b/lang/en/blog.php
index c2aa9f0db79..e4b2594bc2e 100644
--- a/lang/en/blog.php
+++ b/lang/en/blog.php
@@ -213,7 +213,6 @@ $string['viewsiteentries'] = 'View all entries';
 $string['viewuserentries'] = 'View all entries by {$a}';
 $string['worldblogs'] = 'The world can read entries set to be world-accessible';
 $string['wrongexternalid'] = 'Wrong external blog ID';
-$string['wrongpostid'] = 'Wrong blog post id';
 $string['page-blog-edit'] = 'Blog editing pages';
 $string['page-blog-index'] = 'Blog listing pages';
 $string['page-blog-x'] = 'All blog pages';