Show complex cpp data model in QML

[ms2222]

i have tow c++ data model like this :
post data model:

class post_data_model : public QObject
{
    Q_OBJECT
 
public:
    explicit post_data_model(QObject *parent = 0);
 
    Q_PROPERTY(QString key READ key WRITE set_key)
    Q_PROPERTY(QString text READ text WRITE set_text)
    Q_PROPERTY(QString raw_text READ raw_text WRITE set_raw_text)
    Q_PROPERTY(QVariant tags READ tags)
 
	void set_key(QString key);
	void set_text(QString text);
    void set_raw_text(QString raw_text);
	void set_tags(QList <QObject *> tags);
 
	QString key();
	QVariant  tags();
    QString text();
    QString raw_text();
 
private:
    QString m_key;
	QList <QObject *>  m_tags;
    QString m_text;
    QString m_raw_text;
}

class post_data_model : public QObject
{
    Q_OBJECT

public:
    explicit post_data_model(QObject *parent = 0);

    Q_PROPERTY(QString key READ key WRITE set_key)
    Q_PROPERTY(QString text READ text WRITE set_text)
    Q_PROPERTY(QString raw_text READ raw_text WRITE set_raw_text)
    Q_PROPERTY(QVariant tags READ tags)
	
	void set_key(QString key);
	void set_text(QString text);
    void set_raw_text(QString raw_text);
	void set_tags(QList <QObject *> tags);
	
	QString key();
	QVariant  tags();
    QString text();
    QString raw_text();

private:
    QString m_key;
	QList <QObject *>  m_tags;
    QString m_text;
    QString m_raw_text;
}

To copy to clipboard, switch view to plain text mode 

and,tag data model :

class tags_model : public QObject
{
    Q_OBJECT
public:
    explicit tags_model(QObject *parent = 0);
 
    Q_PROPERTY(QString key READ key WRITE set_key)
    Q_PROPERTY(QString name READ name WRITE set_name)
 
    void set_key(QString key);
    void set_name(QString name);
 
    QString key();
    QString name();
private:
    QString m_key;
    QString m_name;

class tags_model : public QObject
{
    Q_OBJECT
public:
    explicit tags_model(QObject *parent = 0);

    Q_PROPERTY(QString key READ key WRITE set_key)
    Q_PROPERTY(QString name READ name WRITE set_name)

    void set_key(QString key);
    void set_name(QString name);

    QString key();
    QString name();
private:
    QString m_key;
    QString m_name;

To copy to clipboard, switch view to plain text mode 

QML Code :

import QtQuck 2.2
import QtQuick.Window 2.1
import QtQuick.Controls 1.2
 
Window {
    id:container_window
    visible: true
    width: 360
    height: 360
    color: "#E6E7E7"
    property bool get_profile_status :false
    onActiveChanged:
    {
        if (get_profile_status==false)
        {
            Posts_Action.get_posts_stream();
            get_profile_status=true
        }
 
    }
 
    ListView
    {
        id:posts_list_view
        height:  200
        width:  200
        spacing: 5
        clip:  true
        delegate: posts_delegate
    }
 
 
	Component
    {
        id: posts_delegate
 
        Item {
            height: 150
 
            Text {
                id: post_content_txt
                width: 200
                wrapMode: Text.WordWrap
                anchors.topMargin: 10
                text: qsTr(modelData.text)
            }
 
          //Tags : No idea
          //How Can show list of tags?
        }
    }
 
	Item {
        id: exteras
       Connections
       {
           target:Posts_Action
           onParsfinished:
           {
               posts_list_view.model=Posts_Action.post_list();
           }
           onNetwork_error_occurred :
           {
               console.log("ERROR: " + error_message);
           }
       }
}

import QtQuck 2.2
import QtQuick.Window 2.1
import QtQuick.Controls 1.2

Window {
    id:container_window
    visible: true
    width: 360
    height: 360
    color: "#E6E7E7"
    property bool get_profile_status :false
    onActiveChanged:
    {
        if (get_profile_status==false)
        {
            Posts_Action.get_posts_stream();
            get_profile_status=true
        }

    }

    ListView
    {
        id:posts_list_view
        height:  200
        width:  200
        spacing: 5
        clip:  true
        delegate: posts_delegate
    }


	Component
    {
        id: posts_delegate

        Item {
            height: 150

            Text {
                id: post_content_txt
                width: 200
                wrapMode: Text.WordWrap
                anchors.topMargin: 10
                text: qsTr(modelData.text)
            }

          //Tags : No idea
          //How Can show list of tags?
        }
    }
	
	Item {
        id: exteras
       Connections
       {
           target:Posts_Action
           onParsfinished:
           {
               posts_list_view.model=Posts_Action.post_list();
           }
           onNetwork_error_occurred :
           {
               console.log("ERROR: " + error_message);
           }
       }
}

To copy to clipboard, switch view to plain text mode 

i can use the property of post model in QML such as the key and text but the point is that i cannot have access to the list of tags...
now,how can i show the list of post tags in QML?