Access page from the url

Fausto · March 8, 2025, 6:17pm

I have a streamlit app that uses st.navigation , here per of my app.py

home_page = st.Page("pages/Home.py", title="Quanta Home", icon=":material/add_circle:")
login_page = st.Page("pages/Login.py", title="", icon=":material/add_circle:")
doc_page = st.Page("pages/Documents.py", title="Documents", icon=":material/add_circle:")
chat_page = st.Page("pages/Chatbot.py", title="Chatbot", icon=":material/add_circle:")
register_page = st.Page("pages/Register.py", title="Register", icon=":material/add_circle:")
profile_page = st.Page("pages/Profile.py", title="Profile", icon=":material/add_circle:")
usage_page = st.Page("pages/Usage.py", title="Usage", icon=":material/add_circle:")

get_session_up()

#if user logged in show a Logout button on sidebar
if st.session_state["logged_in"]!=None:
    logout = st.sidebar.button("Logout")
    if logout:
        logout_user()


if st.session_state["logged_in"]!=None:
    pg = st.navigation([home_page, doc_page, chat_page, profile_page, usage_page], position="sidebar")
else:
    pg = st.navigation([login_page, register_page], position="hidden")

pg.run()

When I try to access a page like Profile via https://localhost:8501/Profile I got this

The page that you have requested does not seem to exist. Running the app’s main page.

Any idea what am I doing wrong?

Fausto · March 11, 2025, 6:19pm

More in general I am looking for a way to access https://localhost:8501/documents or any other URL

Rushmore · March 11, 2025, 8:56pm

@Fausto

You can use st.switch_page

if st.session_state["logged_in"] != None:
    st.switch_page("pages/Home.py")
else:
    st.switch_page("pages/Login.py")

Fausto · March 12, 2025, 7:07am

thanks @Rushmore that I can do
What I am trying to achieve is being able to type https://localhost:8501/Login in the browser and land on the page
What I got is this:

Rushmore · March 12, 2025, 1:58pm

@Fausto Sorry my mistake, did not read that well enough.

Your issue is here:

if st.session_state["logged_in"]!=None:
    pg = st.navigation([home_page, doc_page, chat_page, profile_page, usage_page], position="sidebar")
else:
    pg = st.navigation([login_page, register_page], position="hidden")

If the user is logged in, the login_page and register_page is not registered as valid pages as you can see from your code. So you cannot navigate to it. You can only navigate to it when st.session_state["logged_in"] == None, the opposite of your initial/first condition.

Fausto · March 12, 2025, 2:09pm

You are right on this one, but I got the same issue even if try to navigate https://localhost:8501/Documents

Rushmore · March 12, 2025, 2:16pm

Please clarify, you are using streamlit locally and are navigating to http and not https?

Secondly, I just tried it and it works depending on st.session_state["logged_in"].
Check what value the state is for st.session_state["logged_in"]. st.write it or print it to view it in the terminal. Perhaps st.session_state["logged_in"] is None?

Fausto · March 12, 2025, 2:32pm

Lemmi clarify more. This is my menu:

I can navigate , for example, Documents link by clicking on Documents in the menù.
And I see this in the URL bar:

BUT

if I type localhost:8501/Documents and I navigate to it I got the error

Rushmore · March 12, 2025, 2:37pm

Okay. Can I assume the below is the logic to get the current user loggedin status?

Fausto · March 12, 2025, 2:48pm

correct its the method that I use to bring up the cookies in case they exist

Rushmore · March 12, 2025, 11:52pm

Could I get a glance of what it looks like? You can anonymise name of the cookie.

Fausto · March 13, 2025, 6:03am

def get_session_up():
    # Load session from cookies
    if "cookies" in st.session_state and st.session_state["logged_in"] != True:
        cookies = st.session_state["cookies"]
        #I need to check if cookies contatins the logged_in key
        if cookies is None:
            return False
        if "logged_in" not in cookies:
            return False
        st.session_state["logged_in"] = cookies['logged_in']
        st.session_state["user_id"] = cookies['user_id']
        st.session_state["user_email"] = cookies['user_email']

        # load the google calendar credentials from the token.pickle file
        if "credentials" not in st.session_state:
            st.session_state["credentials"] = None
        if st.session_state["credentials"] is None:
            token_path = os.path.join("tokens_folder", f"token_{st.session_state['user_id']}.pickle")
            if os.path.exists(token_path):
                with open(token_path, "rb") as token:
                    creds = pickle.load(token)
                    st.session_state["credentials"] = creds
            else:
                st.session_state["credentials"] = None

        return True
    else:
        return False

I use this to grab the cookies after a refresh when the session is cleared.

Rushmore · March 13, 2025, 11:06am

Thanks, so I was able to somewhat mimic conditions of the app below. Correct me if I missed anything.

Firstly, Rename folder/directory that have your app pages. From pages to app_pages might suffice.
Getting an error on the console that says: “st.navigation was called in an app with a pages/ directory. This may cause unusual app behavior. You may want to rename the pages/ directory.”

Secondly, the below is a simulation of what I think happens in your app.

USER INITIALLY LOGGED IN

def user_logged_in_already():

    if "logged_in" not in st.session_state:
        st.session_state["logged_in"] = None 

    if "cookies" not in st.session_state:
        st.session_state["cookies"] = {
            "logged_in":True,
            "user_id":"user_id_here",
            "user_email":"email@gmail.com"
        } 

    if "user_id" not in st.session_state:
        st.session_state["user_id"] = ""

    if "user_email" not in st.session_state:
        st.session_state["user_email"] = ""

    def get_session_up():
        # Load session from cookies
        if "cookies" in st.session_state and st.session_state["logged_in"] != True:
            
            cookies = st.session_state["cookies"]
            #I need to check if cookies contatins the logged_in key
            if cookies is None:
                return False
            if "logged_in" not in cookies:
                return False
            st.session_state["logged_in"] = cookies['logged_in']
            st.session_state["user_id"] = cookies['user_id']
            st.session_state["user_email"] = cookies['user_email']

            return True
        else:
            return False
        
    get_session_up()

    home_page = st.Page("pages/Home.py", title="Quanta Home", icon=":material/add_circle:")
    login_page = st.Page("pages/Login.py", title="", icon=":material/add_circle:")
    doc_page = st.Page("pages/Documents.py", title="Documents", icon=":material/add_circle:")
    chat_page = st.Page("pages/Chatbot.py", title="Chatbot", icon=":material/add_circle:")
    register_page = st.Page("pages/Register.py", title="Register", icon=":material/add_circle:")
    profile_page = st.Page("pages/Profile.py", title="Profile", icon=":material/add_circle:")
    usage_page = st.Page("pages/Usage.py", title="Usage", icon=":material/add_circle:")


    #if user logged in show a Logout button on sidebar
    if st.session_state["logged_in"]!=None:
        logout = st.sidebar.button("Logout")
        if logout:
            st.write("logout")


    if st.session_state["logged_in"] != None:
        pg = st.navigation([home_page, doc_page, chat_page, profile_page, usage_page], position="sidebar")
    else:
        pg = st.navigation([login_page, register_page], position="hidden")

    pg.run()

get_session_up()

USER NOT INITIALLY LOGGED IN

def user_not_logged_in():

    if "logged_in" not in st.session_state:
        st.session_state["logged_in"] = None 

    if "cookies" not in st.session_state:
        st.session_state["cookies"] = None 

    if "user_id" not in st.session_state:
        st.session_state["user_id"] = ""

    if "user_email" not in st.session_state:
        st.session_state["user_email"] = ""

    def get_session_up():
        # Load session from cookies
        if "cookies" in st.session_state and st.session_state["logged_in"] != True:
            
            cookies = st.session_state["cookies"]
            #I need to check if cookies contatins the logged_in key
            if cookies is None:
                return False
            if "logged_in" not in cookies:
                return False
            st.session_state["logged_in"] = cookies['logged_in']
            st.session_state["user_id"] = cookies['user_id']
            st.session_state["user_email"] = cookies['user_email']

            return True
        else:
            return False
        
    get_session_up()

    home_page = st.Page("pages/Home.py", title="Quanta Home", icon=":material/add_circle:")
    login_page = st.Page("pages/Login.py", title="", icon=":material/add_circle:")
    doc_page = st.Page("pages/Documents.py", title="Documents", icon=":material/add_circle:")
    chat_page = st.Page("pages/Chatbot.py", title="Chatbot", icon=":material/add_circle:")
    register_page = st.Page("pages/Register.py", title="Register", icon=":material/add_circle:")
    profile_page = st.Page("pages/Profile.py", title="Profile", icon=":material/add_circle:")
    usage_page = st.Page("pages/Usage.py", title="Usage", icon=":material/add_circle:")


    #if user logged in show a Logout button on sidebar
    if st.session_state["logged_in"]!=None:
        logout = st.sidebar.button("Logout")
        if logout:
            st.write("logout")


    if st.session_state["logged_in"] != None:
        pg = st.navigation([home_page, doc_page, chat_page, profile_page, usage_page], position="sidebar")
    else:
        pg = st.navigation([login_page, register_page], position="hidden")

    pg.run()

user_not_logged_in()

In the latter - user_not_logged_in - navigating to Documents brought up the error. In the former it did not.

Maybe have a look at how you are calling the cookies.

Feel free to correct me if anything is wrong.

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Access page from the url

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