Access variable from method of class Ui_MainWindow(object) - oop

Question

I have created a GUI that ask for files to index, search within it and spit out the results.
I am stuck with the last bit that is to show the excerpt of the documents retrieved.
I need to populate the tableWidget with the results of a search engine embedded in the same class. I Thought that the variables were reachable from everywhere within the class is labeled with self, but I was wrong.
This is my latest code I have tried tried so far:
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(1126, 879)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(40, 30, 100, 30))
self.pushButton.setObjectName("pushButton")
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(180, 30, 120, 30))
self.pushButton_2.setObjectName("pushButton_2")
self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_3.setGeometry(QtCore.QRect(620, 30, 80, 30))
self.pushButton_3.setObjectName("pushButton_3")
self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setGeometry(QtCore.QRect(380, 60, 191, 21))
self.lineEdit.setObjectName("lineEdit")
self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit_2.setGeometry(QtCore.QRect(40, 90, 50, 21))
self.lineEdit_2.setObjectName("lineEdit_2")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(380, 30, 50, 35))
font = QtGui.QFont()
font.setPointSize(10)
self.label.setFont(font)
self.label.setObjectName("label")
self.label2 = QtWidgets.QLabel(self.centralwidget)
self.label2.setGeometry(QtCore.QRect(40, 70, 150, 16))
font = QtGui.QFont()
font.setPointSize(10)
self.label2.setFont(font)
self.label2.setObjectName("label")
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setGeometry(QtCore.QRect(0, 120, 1121, 721))
self.tableWidget.setObjectName("tableWidget")
data = self.data()
numrows = len(data)
numcols = len(data[0])
self.tableWidget.setColumnCount(numcols)
self.tableWidget.setRowCount(numrows)
for row in range(numrows):
for column in range(numcols):
self.tableWidget.setItem(row, column, QTableWidgetItem((data[row][column])))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 1126, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
The function related to the results is as follow:
def search(self):
os.chdir(self.folder_path)
self.ix = open_dir("indexdir")
MYDIR = ("Results")
CHECK_FOLDER = os.path.isdir(MYDIR)
if not CHECK_FOLDER:
os.makedirs(MYDIR)
self.text = self.lineEdit.text()
self.query_str = self.text
self.query = qparser.QueryParser("textdata", schema = self.ix.schema)
self.q = self.query.parse(self.query_str)
self.topN = self.lineEdit_2.text()
if self.lineEdit_2.text() == "":
self.topN = 1000
else:
self.topN = int(self.lineEdit_2.text())
self.data=[]
with self.ix.searcher() as searcher:
self.results = searcher.search(self.q, terms=True, limit=self.topN)
Upper = highlight.UppercaseFormatter()
self.results.formatter = Upper
my_cf = highlight.ContextFragmenter(maxchars=500, surround=300)
self.results.fragmenter = my_cf
for self.i in self.results:
self.data.append({"title": self.i['title'], "text": self.i.highlights('textdata')})
return self.data
I got this error: AttributeError: 'Ui_MainWindow' object has no attribute 'folder_path'.
How I can access the self.data to populate the table?

Answer 1

It appears that you're trying to use the "folder_path" attribute without having created it first.
Before you use the your search function, add this line to your class:
self.folder_path = add/your/path/
I'll also note that in the code you provided, it appears that the search function is defined outside of the class (this may just be the effect of auto-formatting on stack overflow). In order for to make your self.folder_path variable usable as-named, double check that you've properly indented it as to make it a class method.

Answer 2

I overcame the issue by cleaning up SetupUI and creating a function that runs once I click within the editline.
self.lineEdit.returnPressed.connect(self.datatable)
def datatable(self):
data = self.data
numrows = len(self.data)
numcols = len(self.data[0])
self.tableWidget.setColumnCount(numcols)
self.tableWidget.setRowCount(numrows)
self.tableWidget.setHorizontalHeaderLabels((list(self.data[0].keys())))
self.tableWidget.resizeColumnsToContents()
self.tableWidget.horizontalHeader().setSectionResizeMode(QHeaderView.ResizeToContents)
self.tableWidget.verticalHeader().setSectionResizeMode(QHeaderView.ResizeToContents)
for row in range(numrows):
for column in range(numcols):
item = (list(self.data[row].values())[column])
self.tableWidget.setItem(row, column, QTableWidgetItem(item))