diff --git a/models/d.blog.php b/models/d.blog.php
index cd21974..6ba0fe1 100755
--- a/models/d.blog.php
+++ b/models/d.blog.php
@@ -33,6 +33,19 @@ class BlogArticle
     public $content_txt = NULL;
     public $author_name = NULL;
 
+	private function decodeJsonText($value) {
+		if ($value === null || $value === '') {
+			return '';
+		}
+
+		$decoded = json_decode($value, true);
+		if (!is_array($decoded)) {
+			return '';
+		}
+
+		return isset($decoded['text']) ? $decoded['text'] : '';
+	}
+
 	/*****
 	** Checks if a page at this URL exists and return the ID
 	*****/
@@ -69,23 +82,60 @@ class BlogArticle
 	** Populate the object using its ID
 	*****/
 	public function populate($row) {
-		$json = json_decode($row['content'], true);
+		if (!is_array($row)) {
+			return;
+		}
 
-		$this->content_id = $row['content_id'];
-		$this->locale_id = $row['locale_id'];
-		$this->version_id = $row['version_id'];
-		$this->permalink = $row['permalink'];
-		$this->version = $row['version'];
-		$this->locale = $row['locale'];
-		$this->creation_date = $row['creation_date'];
-		$this->update_date = $row['update_date'];
-		$this->author = $row['author'];
-		$this->is_public = $row['is_public'];
-		$this->is_archive = $row['is_archive'];
-		$this->is_commentable = $row['is_commentable'];
-		$this->type = $row['type'];
-		$this->name = $row['name'];
-		$this->content = isset($json['text']) ? $json['text'] : '';
+		$decodedContent = null;
+		if (array_key_exists('content', $row)) {
+			$decodedContent = $this->decodeJsonText($row['content']);
+		}
+
+		if (array_key_exists('content_id', $row)) {
+			$this->content_id = $row['content_id'];
+		}
+		if (array_key_exists('locale_id', $row)) {
+			$this->locale_id = $row['locale_id'];
+		}
+		if (array_key_exists('version_id', $row)) {
+			$this->version_id = $row['version_id'];
+		}
+		if (array_key_exists('permalink', $row)) {
+			$this->permalink = $row['permalink'];
+		}
+		if (array_key_exists('version', $row)) {
+			$this->version = $row['version'];
+		}
+		if (array_key_exists('locale', $row)) {
+			$this->locale = $row['locale'];
+		}
+		if (array_key_exists('creation_date', $row)) {
+			$this->creation_date = $row['creation_date'];
+		}
+		if (array_key_exists('update_date', $row)) {
+			$this->update_date = $row['update_date'];
+		}
+		if (array_key_exists('author', $row)) {
+			$this->author = $row['author'];
+		}
+		if (array_key_exists('is_public', $row)) {
+			$this->is_public = $row['is_public'];
+		}
+		if (array_key_exists('is_archive', $row)) {
+			$this->is_archive = $row['is_archive'];
+		}
+		if (array_key_exists('is_commentable', $row)) {
+			$this->is_commentable = $row['is_commentable'];
+		}
+		if (array_key_exists('type', $row)) {
+			$this->type = $row['type'];
+		}
+		if (array_key_exists('name', $row)) {
+			$this->name = $row['name'];
+		}
+		if ($decodedContent !== null) {
+			$this->content = $decodedContent;
+		}
 	}
 
 	/*****
diff --git a/models/d.comments.php b/models/d.comments.php
index 95d2b2a..5b7be5d 100644
--- a/models/d.comments.php
+++ b/models/d.comments.php
@@ -60,16 +60,40 @@ class Comment
 	** Populate the object using its ID
 	*****/
 	public function populate($row) {
-		$this->id = $row['id'];
-		$this->version = $row['version'];
-		$this->creation_date = $row['creation_date'];
-		$this->update_date = $row['update_date'];
-		$this->author = $row['author'];
-		$this->is_public = $row['is_public'];
-		$this->is_archive = $row['is_archive'];
-		$this->content = $row['content'];
-		$this->comment = $row['comment'];
-		$this->locale = $row['locale'];
+		if (!is_array($row)) {
+			return;
+		}
+
+		if (array_key_exists('id', $row)) {
+			$this->id = $row['id'];
+		}
+		if (array_key_exists('version', $row)) {
+			$this->version = $row['version'];
+		}
+		if (array_key_exists('creation_date', $row)) {
+			$this->creation_date = $row['creation_date'];
+		}
+		if (array_key_exists('update_date', $row)) {
+			$this->update_date = $row['update_date'];
+		}
+		if (array_key_exists('author', $row)) {
+			$this->author = $row['author'];
+		}
+		if (array_key_exists('is_public', $row)) {
+			$this->is_public = $row['is_public'];
+		}
+		if (array_key_exists('is_archive', $row)) {
+			$this->is_archive = $row['is_archive'];
+		}
+		if (array_key_exists('content', $row)) {
+			$this->content = $row['content'];
+		}
+		if (array_key_exists('comment', $row)) {
+			$this->comment = $row['comment'];
+		}
+		if (array_key_exists('locale', $row)) {
+			$this->locale = $row['locale'];
+		}
 	}
 
 	/*****
diff --git a/models/d.locales.php b/models/d.locales.php
index 8985701..d276612 100755
--- a/models/d.locales.php
+++ b/models/d.locales.php
@@ -48,9 +48,19 @@ class Locale
 	** Populate the object using raw data from SQL
 	*****/
 	public function populate($row) {
-	    $this->name = $row['name'];
-	    $this->display_name = $row['display_name'];
-	    $this->flag_name = $row['flag_name'];
+		if (!is_array($row)) {
+			return;
+		}
+
+		if (array_key_exists('name', $row)) {
+			$this->name = $row['name'];
+		}
+		if (array_key_exists('display_name', $row)) {
+			$this->display_name = $row['display_name'];
+		}
+		if (array_key_exists('flag_name', $row)) {
+			$this->flag_name = $row['flag_name'];
+		}
 	}
 }
 
diff --git a/models/d.poi.php b/models/d.poi.php
index 106044a..b8859dc 100755
--- a/models/d.poi.php
+++ b/models/d.poi.php
@@ -40,6 +40,19 @@ class Poi
 	public $ele;
 	public $author_name;
 
+	private function decodeJsonArray($value) {
+		if ($value === null || $value === '') {
+			return [];
+		}
+
+		$decoded = json_decode($value, true);
+		if (!is_array($decoded)) {
+			return [];
+		}
+
+		return $decoded;
+	}
+
 	/*****
 	** Checks if a page at this URL exists and return the ID
 	*****/
@@ -117,28 +130,81 @@ class Poi
 	** Populate the object using its ID
 	*****/
 	public function populate($row) {
-		$this->content_id = $row['content_id'];
-		$this->locale_id = $row['locale_id'];
-		$this->source_id = $row['source_id'];
-		$this->version_id = $row['version_id'];
-		$this->permalink = $row['permalink'];
-		$this->version = $row['version'];
-		$this->locale = $row['locale'];
-		$this->creation_date = $row['creation_date'];
-		$this->update_date = $row['update_date'];
-		$this->author = $row['author'];
-		$this->is_public = $row['is_public'];
-		$this->is_archive = $row['is_archive'];
-		$this->is_commentable = $row['is_commentable'];
-		$this->type = $row['type'];
-		$this->poi_type = $row['poi_type'];
-		$this->name = $row['name'];
-		$this->parameters = json_decode($row['parameters'], true);
-		$this->lon = $row['lon'];
-		$this->lat = $row['lat'];
-		$this->ele = $row['ele'];
-		$this->source = $row['source'];
-		$this->remote_source_id = $row['remote_source_id'];
+		if (!is_array($row)) {
+			return;
+		}
+
+		$decodedParameters = null;
+		if (array_key_exists('parameters', $row)) {
+			$decodedParameters = $this->decodeJsonArray($row['parameters']);
+		}
+
+		if (array_key_exists('content_id', $row)) {
+			$this->content_id = $row['content_id'];
+		}
+		if (array_key_exists('locale_id', $row)) {
+			$this->locale_id = $row['locale_id'];
+		}
+		if (array_key_exists('source_id', $row)) {
+			$this->source_id = $row['source_id'];
+		}
+		if (array_key_exists('version_id', $row)) {
+			$this->version_id = $row['version_id'];
+		}
+		if (array_key_exists('permalink', $row)) {
+			$this->permalink = $row['permalink'];
+		}
+		if (array_key_exists('version', $row)) {
+			$this->version = $row['version'];
+		}
+		if (array_key_exists('locale', $row)) {
+			$this->locale = $row['locale'];
+		}
+		if (array_key_exists('creation_date', $row)) {
+			$this->creation_date = $row['creation_date'];
+		}
+		if (array_key_exists('update_date', $row)) {
+			$this->update_date = $row['update_date'];
+		}
+		if (array_key_exists('author', $row)) {
+			$this->author = $row['author'];
+		}
+		if (array_key_exists('is_public', $row)) {
+			$this->is_public = $row['is_public'];
+		}
+		if (array_key_exists('is_archive', $row)) {
+			$this->is_archive = $row['is_archive'];
+		}
+		if (array_key_exists('is_commentable', $row)) {
+			$this->is_commentable = $row['is_commentable'];
+		}
+		if (array_key_exists('type', $row)) {
+			$this->type = $row['type'];
+		}
+		if (array_key_exists('poi_type', $row)) {
+			$this->poi_type = $row['poi_type'];
+		}
+		if (array_key_exists('name', $row)) {
+			$this->name = $row['name'];
+		}
+		if ($decodedParameters !== null) {
+			$this->parameters = $decodedParameters;
+		}
+		if (array_key_exists('lon', $row)) {
+			$this->lon = $row['lon'];
+		}
+		if (array_key_exists('lat', $row)) {
+			$this->lat = $row['lat'];
+		}
+		if (array_key_exists('ele', $row)) {
+			$this->ele = $row['ele'];
+		}
+		if (array_key_exists('source', $row)) {
+			$this->source = $row['source'];
+		}
+		if (array_key_exists('remote_source_id', $row)) {
+			$this->remote_source_id = $row['remote_source_id'];
+		}
 	}
 
 	/*****
diff --git a/models/d.users.php b/models/d.users.php
index 0a21c50..5284ca9 100755
--- a/models/d.users.php
+++ b/models/d.users.php
@@ -102,19 +102,49 @@ class User
 	** Populate the object using raw data from SQL
 	*****/
 	public function populate($row) {
-	    $this->id = $row['id'];
-	    $this->name = $row['name'];
-	    $this->version = $row['version'];
-	    $this->email = $row['email'];
-	    $this->password = $row['password'];
-	    $this->website = $row['website'];
-	    $this->is_avatar_present = $row['is_avatar_present'];
-	    $this->is_archive = $row['is_archive'];
-	    $this->rank = $row['rank'];
-	    $this->locale = $row['locale'];
-	    $this->timezone = $row['timezone'];
-	    $this->visit_date = $row['visit_date'];
-	    $this->register_date = $row['register_date'];
+		if (!is_array($row)) {
+			return;
+		}
+
+		if (array_key_exists('id', $row)) {
+			$this->id = $row['id'];
+		}
+		if (array_key_exists('name', $row)) {
+			$this->name = $row['name'];
+		}
+		if (array_key_exists('version', $row)) {
+			$this->version = $row['version'];
+		}
+		if (array_key_exists('email', $row)) {
+			$this->email = $row['email'];
+		}
+		if (array_key_exists('password', $row)) {
+			$this->password = $row['password'];
+		}
+		if (array_key_exists('website', $row)) {
+			$this->website = $row['website'];
+		}
+		if (array_key_exists('is_avatar_present', $row)) {
+			$this->is_avatar_present = $row['is_avatar_present'];
+		}
+		if (array_key_exists('is_archive', $row)) {
+			$this->is_archive = $row['is_archive'];
+		}
+		if (array_key_exists('rank', $row)) {
+			$this->rank = $row['rank'];
+		}
+		if (array_key_exists('locale', $row)) {
+			$this->locale = $row['locale'];
+		}
+		if (array_key_exists('timezone', $row)) {
+			$this->timezone = $row['timezone'];
+		}
+		if (array_key_exists('visit_date', $row)) {
+			$this->visit_date = $row['visit_date'];
+		}
+		if (array_key_exists('register_date', $row)) {
+			$this->register_date = $row['register_date'];
+		}
 	}
 
 	/*****
diff --git a/models/d.wiki.php b/models/d.wiki.php
index 2d9470c..17bc075 100755
--- a/models/d.wiki.php
+++ b/models/d.wiki.php
@@ -32,8 +32,21 @@ class WikiPage
 
 	public $content_html;
 
+	private function decodeJsonText($value) {
+		if ($value === null || $value === '') {
+			return '';
+		}
+
+		$decoded = json_decode($value, true);
+		if (!is_array($decoded)) {
+			return '';
+		}
+
+		return isset($decoded['text']) ? $decoded['text'] : '';
+	}
+
 	/*****
-	** Checks if a page at this ermalink exists and return the populated element
+	** Checks if a page at this permalink exists and return the populated element
 	*****/
 	public function checkPermalink($permalink, $withArchive=0, $elementNb=0) {
 		global $config;
@@ -68,23 +81,60 @@ class WikiPage
 	** Populate the object using raw data from SQL
 	*****/
 	public function populate($row) {
-		$json = json_decode($row['content'], true);
+		if (!is_array($row)) {
+			return;
+		}
 
-		$this->content_id = $row['content_id'];
-		$this->locale_id = $row['locale_id'];
-		$this->version_id = $row['version_id'];
-		$this->permalink = $row['permalink'];
-		$this->version = $row['version'];
-		$this->locale = $row['locale'];
-		$this->creation_date = $row['creation_date'];
-		$this->update_date = $row['update_date'];
-		$this->author = $row['author'];
-		$this->is_public = $row['is_public'];
-		$this->is_archive = $row['is_archive'];
-		$this->is_commentable = $row['is_commentable'];
-		$this->type = $row['type'];
-		$this->name = $row['name'];
-		$this->content = isset($json['text']) ? $json['text'] : '';
+		$decodedContent = null;
+		if (array_key_exists('content', $row)) {
+			$decodedContent = $this->decodeJsonText($row['content']);
+		}
+
+		if (array_key_exists('content_id', $row)) {
+			$this->content_id = $row['content_id'];
+		}
+		if (array_key_exists('locale_id', $row)) {
+			$this->locale_id = $row['locale_id'];
+		}
+		if (array_key_exists('version_id', $row)) {
+			$this->version_id = $row['version_id'];
+		}
+		if (array_key_exists('permalink', $row)) {
+			$this->permalink = $row['permalink'];
+		}
+		if (array_key_exists('version', $row)) {
+			$this->version = $row['version'];
+		}
+		if (array_key_exists('locale', $row)) {
+			$this->locale = $row['locale'];
+		}
+		if (array_key_exists('creation_date', $row)) {
+			$this->creation_date = $row['creation_date'];
+		}
+		if (array_key_exists('update_date', $row)) {
+			$this->update_date = $row['update_date'];
+		}
+		if (array_key_exists('author', $row)) {
+			$this->author = $row['author'];
+		}
+		if (array_key_exists('is_public', $row)) {
+			$this->is_public = $row['is_public'];
+		}
+		if (array_key_exists('is_archive', $row)) {
+			$this->is_archive = $row['is_archive'];
+		}
+		if (array_key_exists('is_commentable', $row)) {
+			$this->is_commentable = $row['is_commentable'];
+		}
+		if (array_key_exists('type', $row)) {
+			$this->type = $row['type'];
+		}
+		if (array_key_exists('name', $row)) {
+			$this->name = $row['name'];
+		}
+		if ($decodedContent !== null) {
+			$this->content = $decodedContent;
+		}
 	}
 
 	/*****