Hi there. I am running Streamlit 1.8.1 (the latest, I think). When I try and run my Hydralit app, I get the following:

ModuleNotFoundError: No module named 'streamlit.script_run_context'

This seems to be part of the sessionstate.py file.

Can something be done to fix this on my side?

Hi!, i'm trying to make a multi page with hydralit and i keep gettin this error:

AttributeError: 'NoneType' object has no attribute 'session_id'

I found a answer to this problem in the streamlit webb, wich was:

` def _get_state(hash_funcs=None): try: session = _get_session() except (AttributeError, NameError): session = sys

    if not hasattr(session, "_custom_session_state"):
        session._custom_session_state = _SessionState(session, hash_funcs)

    return session._custom_session_state

`

But when i dont' really know how to do it, when i call this function in my code gives me another error:

NameError: name '_get_session' is not defined

Hi !

When I try to implement hydralit 1.0.12 in my App (I use streamlit 1.9.0) the following error occurs:

from streamlit.script_run_context import get_script_run_ctx
ModuleNotFoundError: No module named 'streamlit.script_run_context'

It would be great if you could fix this. Thank you for sharing hydralit with us! :)

Hello @TangleSpace! I love this package!

I hope I am not doing something wrong, but when I put the code self.do_redirect("Title of app to run") in my code on a button, the relevant app does run, but the navbar does not change to reflect this. It stays on the navbar option of the original app where the button is housed.

Did I miss something, or do something incorrectly?

https://github.com/TangleSpace/hydralit/blob/ecaec562aedc3854c2dbae9be76e9a679da228b9/hydralit/sessionstate.py#L8

at streamlit‘s latest version，it use scriptrunner package:

from streamlit.scriptrunner import get_script_run_ctx

Trying to build a website using Hydralit, and encountered ModuleNotFound errors immediately upon importing the library.

It seems like at some point Streamlit changed around their code schema; changing two lines in sessionstate.py seemed to do the trick:

# from
from streamlit.scriptrunner.script_run_context import get_script_run_ctx

# to
from streamlit.runtime.scriptrunner.script_run_context import get_script_run_ctx

and

# from
from streamlit.server.server import Server

# to
from streamlit.web.server import Server

I'm pretty new to Streamlit/Hydralit, but hopefully these changes won't break anything else? Seems to be working just fine from the testing I've been doing.

As of Streamlit 1.12, the older API used to hack in a SessionState has been entirely deprecated (with an ugly hack to retrieve the Server from the GC) in favour of the built-in st.session_state. This comes from the advice of this gist here: https://gist.github.com/tvst/036da038ab3e999a64497f42de966a92

I'd be happy to contribute a pull request (I think it should be minor changes), though my only concern is that hydralit_components may require the old SessionState. Could any of the maintainers of either repository comment on this?

Hi, I'm having issue using the package.

Traceback (most recent call last):
  File "/home/irfan/PycharmProjects/TES-Search/multiapp.py", line 1, in <module>
    import hydralit as hy
  File "/home/irfan/environments/The-Entities-Swissknife/lib/python3.7/site-packages/hydralit/__init__.py", line 5, in <module>
    from hydralit.hydra_app import HydraApp
  File "/home/irfan/environments/The-Entities-Swissknife/lib/python3.7/site-packages/hydralit/hydra_app.py", line 4, in <module>
    from hydralit.sessionstate import SessionState
  File "/home/irfan/environments/The-Entities-Swissknife/lib/python3.7/site-packages/hydralit/sessionstate.py", line 8, in <module>
    from streamlit.script_run_context import get_script_run_ctx
ModuleNotFoundError: No module named 'streamlit.script_run_context'

I'm making a streamlit app based on the hydralit-example: https://github.com/TangleSpace/hydralit-example

My app loads some data at first from database. While this is happening a rather large loading screen is present.

How can I tame this loader and select a more compact one?

The structure of the code I use for the app-page: import hydralit as hy import pandas as pd import streamlit as st

#create a wrapper class class generate_app_page(hy.HydraHeadApp): def run(self): col1, col2 = hy.columns([2,4]) msr = col1.selectbox('some nice label', get_ids_from_db())

Hi there! This package is great.

Two quick questions: I've integrated an existing app into Hydralit, but the top menu is appearing about an inch below the top of the screen. Is there a way to move it to the top?

And, when I load a page/app I get all three loaders with the large text that is is "Loading now". Is there a way to customize which loader shows and remove/format the text?

howdy, this is incredible work. I want to be you.

The loading_app in hydra_app points to a resources/failure.png file that comes with hydra-examples, but not with the module itself. It eclipses other error messages with "cant find failure.png". I think that line just needs to be wiped.

I have a two page application where in one of them I have a few widgets like text box which is connected to a session state variable via the key. It works fine until I am in this page but if I open the other page and comeback again then the widget values and their session state values are lost. I tried this solution https://gist.github.com/okld/8ca97ba892a7c20298fd099b196a8b4d but it fails and shows the error: Error details: Values for st.button, st.download_button, st.file_uploader, and st.form cannot be set using st.session_state. Any suggestion?

The first step in all apps is to upload a video file, like

f = st.file_uploader("upload video")
st.video(f)

If I upload the video in app1, and then navigate to app2, the video also shows. Is there any solutio to clear the components in app2? Thanks.

Hey there! I have been loving using Hydralit, but ran into the issue of the app runner catching all exceptions, and wanted the ability to pass a logger through to get some more information when an error occurs.

Hope you find the addition useful! If not, no worries :)

So I was trying to hold a JWT token in cookie when login button is pressed.

app.py

import hydralit as hy
import streamlit as st
from hydralit_components import CookieManager
from login import LoginApp

cookie_manager = CookieManager()
app = hy.HydraApp(title='test', favicon="🐙", hide_streamlit_markers=True,
                  allow_url_nav=True, sidebar_state="expanded",
                  layout='wide'
                  )

app.add_app("Login", LoginApp(cookie_manager=cookie_manager), is_login=True, logout_label="Logout")

@app.logout_callback
def mylogout_cb():
    cookie_manager.delete('user_data')
    print('I was called from Hydralit at logout!')

@app.login_callback
def mylogin_cb():
    print('I was called from Hydralit at login!')

login.py

class LoginApp(HydraHeadApp):
    """
    This is an example login application to be used to secure access within a HydraApp streamlit application.
    This application implementation uses the allow_access session variable and uses the do_redirect method if the login check is successful.

    """

    def __init__(self, cookie_manager, title='', **kwargs):
        self.__dict__.update(kwargs)
        self.title = title
        self.cookie_manager = cookie_manager

    def _check_cookie_login(self) -> dict | None:
        """
        Check if the user is logged in.
        """
        session_cookie = self.cookie_manager.get("user_data")
        if session_cookie:
            return {'user': 'joe', 'level': 1}
        # ToDo: Check parse jwt and check if its valid and then return the user dict

    def run(self) -> None:
        """
        Application entry point.
        """
        login = self._check_cookie_login()
        if login:
            self.set_access(1, login['user'], cache_access=True)
            self.do_redirect()

        st.markdown("<h1 style='text-align: center;'>Secure Hydralit Login</h1>", unsafe_allow_html=True)

        c1, c2, c3, = st.columns([2, 2, 2])

        form_data = self._create_login_form(c2)

        pretty_btn = """
        <style>
        div[class="row-widget stButton"] > button {
            width: 100%;
        }
        </style>
        <br><br>
        """
        c2.markdown(pretty_btn, unsafe_allow_html=True)

        if form_data['submitted']:
            self._do_login(form_data, c2)

    @staticmethod
    def _create_login_form(parent_container) -> Dict:

        login_form = parent_container.form(key="login_form")

        form_state = {}
        form_state['username'] = login_form.text_input('Username')
        form_state['password'] = login_form.text_input('Password', type="password")
        form_state['submitted'] = login_form.form_submit_button('Login')

        parent_container.write("sample login -> joe & joe")

        return form_state

    def _do_login(self, form_data, msg_container) -> None:

        # access_level=0 Access denied!
        access_level = self._check_login(form_data)

        if access_level > 0:
            msg_container.success(f"✔️ Login success")
            with st.spinner("🤓 now redirecting to application...."):
                time.sleep(1)

                self.set_access(1, form_data['username'], cache_access=True)
                self.cookie_manager.set("user_data", 'True')
                # Do the kick to the home page
                self.do_redirect()
        else:
            self.session_state.allow_access = 0
            self.session_state.current_user = None

            msg_container.error(f"❌ Login unsuccessful, 😕 please check your username and password and try again.")

    def _check_login(self, login_data) -> int:

        if login_data['username'] == 'joe' and login_data['password'] == 'joe':
            return 1
        else:
            return 0

The above basically checks if there is a cookie with name user_data and logs in automatically if its set. When the cookie is not found it loads the modified example from example code.

When the username and password matches. It should set a cookie with name user_data but this fails here. But doing the same using login_callback in app.py works

@app.logout_callback
def mylogout_cb():
    cookie_manager.delete('user_data')
    print('I was called from Hydralit at logout!')

@app.login_callback
def mylogin_cb():
    print('I was called from Hydralit at login!')
    cookie_manager.set('user_data', "Joe")

Now whenever I reload the page I can skip the login page. But hitting the logout button sends invokes the mylogout_cb function. But cookie_manager.delete('user_data') has no effect and doesn't delete the cookie.

But putting the same cookie_manager.delete('user_data') inside the mylogin_cb callback actually deletes the cookie on next login / on page reload.

Am i missing something here ?. What would be the best way for me to achieve this. I tried extra_streamlit_components library and it has the same behaviour