fixed issue with filters that made a "no data" error occur, when the user set at least one filter for teacher but none for students and vice versa, even if there was data available.

headers/filtermodel.h

@@ -13,7 +13,8 @@ public:
 
     enum FilterRole {
         GradeRole = Qt::DisplayRole,
-        ClassLetterRole
+        ClassLetterRole,
+        RoleRole
     };
     Q_ENUM(FilterRole)
 
@@ -22,13 +23,14 @@ public:
     QHash<int, QByteArray> roleNames() const;
 
     Q_INVOKABLE QVariantMap get(int row) const;
-    Q_INVOKABLE void append(const QString &grade, const QString &classLetter);
+    Q_INVOKABLE void append(const QString &grade, const QString &classLetter, const QString &role);
     Q_INVOKABLE void remove(int row);
 
 private:
     struct Filter {
         QString grade;
         QString classLetter;
+        QString role;
     };
 
     QList<Filter> m_filters;

qml/Forms/FilterForm.qml

@@ -8,6 +8,8 @@ import "../Components"
 Page {
     id: root
 
+    property bool teacherMode: _cppAppSettings.loadSetting("teacherMode") === "true"
+
     title: "Vertretungsplan Filter"
 
     signal opened()
@@ -25,14 +27,14 @@ Page {
 
         onFinished: {
             if(_cppAppSettings.loadSetting("teacherMode") === "true"){
-                contactView.model.append(teacherShortcut, "")
+                contactView.model.append(teacherShortcut, "", "t");
             }
             else {
                 if(parseInt(grade) > 10 || classletter === "alle"){
                     classletter = ""
                 }
 
-                contactView.model.append(grade, classletter)
+                contactView.model.append(grade, classletter, "s")
             }
         }
 
@@ -142,6 +144,8 @@ Page {
             text: grade + classLetter
             font.pixelSize: height * 0.4
 
+            enabled: root.teacherMode ? role === "t":role === "s"
+
             Rectangle {
 
                 anchors {

sources/appsettings.cpp

@@ -63,11 +63,18 @@ QList<QStringList> AppSettings::readFilters() {
         // array of a single filter
         QJsonArray filterArray = value.toArray();
 
-        // extract values from array
-        QString gradeString = filterArray[0].toString();
-        QString letterString = filterArray[1].toString();
+        QStringList tmpFilterList;
 
-        filtersList.append({gradeString, letterString});
+        // extract values from array
+        foreach(const QJsonValue & key, filterArray){
+            tmpFilterList.append(key.toString());
+        }
+
+        while (tmpFilterList.length() < 3) {
+            tmpFilterList.append("");
+        }
+
+        filtersList.append(tmpFilterList);
     }
 
     return(filtersList);
@@ -81,8 +88,14 @@ void AppSettings::writeFilters(QList<QStringList> list) {
 
     foreach(QStringList filter, list){
         QJsonArray filterArray;
+
+        while (filter.length() < 3) {
+            filter.append("");
+        }
+
         filterArray.append(filter[0]);
         filterArray.append(filter[1]);
+        filterArray.append(filter[2]);
 
         filtersArray.append(filterArray);
     }

sources/filtermodel.cpp

@@ -7,7 +7,7 @@ FilterModel::FilterModel(QObject *parent ) : QAbstractListModel(parent)
     QList<QStringList> filtersList = pGlobalAppSettings->readFilters();
 
     foreach(QStringList filterList, filtersList){
-        m_filters.append({filterList[0], filterList[1]});
+        m_filters.append({filterList[0], filterList[1], filterList[2]});
     }
 }
 
@@ -22,6 +22,7 @@ QVariant FilterModel::data(const QModelIndex &index, int role) const
         switch (role) {
         case GradeRole: return m_filters.at(index.row()).grade;
         case ClassLetterRole: return m_filters.at(index.row()).classLetter;
+        case RoleRole: return m_filters.at(index.row()).role;
         default: return QVariant();
     }
     return QVariant();
@@ -32,6 +33,7 @@ QHash<int, QByteArray> FilterModel::roleNames() const
     static const QHash<int, QByteArray> roles {
         { GradeRole, "grade" },
         { ClassLetterRole, "classLetter" },
+        { RoleRole, "role"}
     };
     return roles;
 }
@@ -39,10 +41,10 @@ QHash<int, QByteArray> FilterModel::roleNames() const
 QVariantMap FilterModel::get(int row) const
 {
     const Filter filter = m_filters.value(row);
-    return { {"grade", filter.grade}, {"classLetter", filter.classLetter} };
+    return { {"grade", filter.grade}, {"classLetter", filter.classLetter}, {"role", filter.role} };
 }
 
-void FilterModel::append(const QString &grade, const QString &classLetter)
+void FilterModel::append(const QString &grade, const QString &classLetter, const QString &role)
 {
 
     foreach(Filter filter, this->m_filters){
@@ -61,14 +63,14 @@ void FilterModel::append(const QString &grade, const QString &classLetter)
         row++;
     }
     beginInsertRows(QModelIndex(), row, row);
-    m_filters.insert(row, {grade, classLetter});
+    m_filters.insert(row, {grade, classLetter, role});
     endInsertRows();
 
     QList<QStringList> filtersList;
     filtersList.clear();
 
     foreach(Filter filter, this->m_filters){
-        filtersList.append({filter.grade, filter.classLetter});
+        filtersList.append({filter.grade, filter.classLetter, filter.role});
     }
 
     pGlobalAppSettings->writeFilters(filtersList);
@@ -88,7 +90,7 @@ void FilterModel::remove(int row)
     filtersList.clear();
 
     foreach(Filter filter, this->m_filters){
-        filtersList.append({filter.grade, filter.classLetter});
+        filtersList.append({filter.grade, filter.classLetter, filter.role});
     }
 
     pGlobalAppSettings->writeFilters(filtersList);

sources/serverconn.cpp

@@ -298,6 +298,15 @@ int ServerConn::getEvents(QString day){
     // get the filers list for later usage
     QList<QStringList> filtersList = pGlobalAppSettings->readFilters();
 
+    // remove all elements from the filters list, that do not match the current mode ( teacher / student ) of the app
+    for(int i = 0; i < filtersList.length(); i++){
+        QStringList filterList = filtersList[i];
+        if( !(pGlobalAppSettings->loadSetting("teacherMode") == "true" ? filterList[2] == "t":filterList[2] == "s") ){
+           filtersList.removeAt(i);
+           i = i-1;
+        }
+    }
+
     // go through the list and process every single row
     for(int x = 0; x < events.length(); x++){
         // store the event string