app.py 文件源码

def showNearbyIssueList():
    if 'logged_in' not in login_session:
        flash('You need to login first.')
        return redirect(url_for('login'))
    else:
        if request.method == 'POST':
           #Setting distance as 1KM radius 0.00654=1Km
            latmax=float(request.form['I_Lat'])+0.00654
            latmin=float(request.form['I_Lat'])-0.00654
            lngmax=float(request.form['I_Lng'])+0.00654
            lngmin=float(request.form['I_Lng'])-0.00654
            nearbyIssue=session.query(Issue).filter(Issue.lat<latmax,Issue.lat>latmin, Issue.lng<lngmax,Issue.lng>lngmin).all()
            return render_template('shownearbyissuelist.html', Issue=nearbyIssue)
        else:
            return render_template('getlocation.html')

#-----------------------------------------------------------------------------------------------------------------   

# LOGIN