I have a problem with my python code which I want to use for a REST API server.
The current problem is that my database query is returning null when I know that the value is there
The code for the specific path:
@app.route('/data/active_predicted/<int:ticketId>', methods=['GET'])
def search_db_tickId_act(ticketId):
cursor = db.cursor()
db_query = cursor.execute("select * from active_predicted where ticketId=" + str(ticketId))
json_output = json.dumps(dict(cursor.fetchall()))
cursor.close()
if not cursor.fetchall():
return "Nothing found \n SQL Query: " + "select * from active_predicted where ticketId=" + str(ticketId)
else:
return str(cursor.fetchall())
When I access this URL I get returned the following:
Nothing found SQL Query: select * from active_predicted where ticketId=1324
When I plug this SQL query I get the result I want, 1 row with 2 columns but it seems as though the program cannot locate the row?
The problems:
dictionary=True
when you initialize the cursor; json_output
; fetchone
instead fetchall
; cursor.close()
got called, you can obtain nothing from that cursor no matter you fetched before or not; Here's the fixed code:
@app.route('/data/active_predicted/<int:ticketId>', methods=['GET'])
def search_db_tickId_act(ticketId):
try:
cursor = db.cursor(dictionary=True)
db_query = cursor.execute("select * from active_predicted where ticketId=%s LIMIT 1", ticketId)
row = cursor.fetchone()
if row:
return json.dumps(row)
else:
return "Nothing found \n SQL Query: " + "select * from active_predicted where ticketId=" + str(ticketId)
finally:
cursor.close()
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