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modules/ticketsViewer.py

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+import streamlit as st
+import pymysql
+
+connection = pymysql.connect(
+    host='localhost',
+    user='UserForDBViewerOnStreamlit',
+    password='123',
+    db='DBForDBViewerOnStreamlit'
+)
+
+
+def main(connection=connection):
+
+    def all_table_elements(TableName):
+
+        with connection:
+            query = 'SELECT * FROM ' + TableName
+            cursor = connection.cursor(pymysql.cursors.DictCursor)
+            cursor.execute(query)
+            rowsList = cursor.fetchall()
+            return rowsList
+
+    def filtered_tickets(userID):
+
+        with connection:
+            query = 'SELECT * FROM Tickets WHERE UserID IN (' + userID + ')'
+            cursor = connection.cursor(pymysql.cursors.DictCursor)
+            cursor.execute(query)
+            userTickets = cursor.fetchall()
+            return userTickets
+
+    usersList = all_table_elements('Users')
+    st.title('Список пользователей и их заявок')
+    st.dataframe(usersList)
+
+    listToDisplay = []
+    for i in range(len(usersList)):
+        listToDisplay.append(
+            str(usersList[i]['UserID']) + ' ' + usersList[i]['UserName'])
+
+    filterBox = st.checkbox('Фильтр по пользователю')
+    if filterBox:
+        choice = st.selectbox(
+            'Выберите пользователя для просмотра его заявок', listToDisplay)
+        if choice is not None:
+            userTickets = filtered_tickets(choice.split(' ')[0])
+            st.dataframe(userTickets)
+    else:
+        st.dataframe(all_table_elements('Tickets'))
+
+
+if __name__ == "__main__":
+    main()