wtforms | Go forms validation | Form library

I have deployed my flask project on heroku but for some reason I am getting this error

Application error An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command heroku logs --tail

Here's the tail log:-

I have an application that is using Flask and wtforms and part of the functionality is to take user input for the first two fields and populate the remainder of the form fields which are of type SelectMultipleField (I'm going to refer to these as select fields) with choices from a database based on the first two fields (I'm going to refer to these as entry fields).

My issue right now is getting the select fields to dynamically populate. I found a solution here and this seems to be exactly what I need. It instantiates the select fields to all possible choices and then when it detects a JQuery "onchange" event in the entry fields, filters the select fields to choices based on the user entry for the entry fields. An example would be a user entering a specific company into the form and the select fields populating with "locations" only for that company.

However, in adapting this solution to my problem, I have not been able to get the code to run and I have researched far and wide and unable to resolve this. I'm new to both JQuery and Stack Overflow so any help would be greatly appreciated. Below is my code. Note that I am only focusing on one of the entry fields and dynamically populating just one of the select fields until I get this to work. Test_table is the entry field and test_join_key is the select field.

Here's the form with relevant fields-

so I am following a tutorial series from Corey Schafer for making a Flask Web App, but I'm doing something wrong. So when it comes to making a new post from a user to the database it writes in the database with the data from the form, but when I try to add another post from the same user I get the error:

I want to control multiple logins with login_required decorator in flask. In my project i want only admin to be able to add articles, and registered users to be able to comment them. I hid the logout page and profile page from unregistered users but i cant hide the add article page from registered users how can i solve this problem?

I'm using Flask-Admin to create views of my database tables. One of our tables has a "color" column and it's "editable" meaning if you click on it, you can edit the text directly and it'll update the database with AJAX. It's a text field and I'm expecting hex colors like "#3CA4FF".

I want this "editable" color column to have an HTML5 color picker widget to aid in color selection (i.e. ).

Here's my Python code for:

1. The SQLAlchemy table model class
2. Custom ColorField wtforms field
3. The Flask-Admin model view class

The following works fine to add my custom ColorField to the "edit" form, but what I really want is to edit it using the column_editable_list option.

I've been searching for an answer for hours. I apologise if I missed something.

I'm using the same form multiple times in order to add rows to my database. Every time I check an excel file to pre-fill some of the wtforms StringFields with known information that the user may want to change.

The thing is: I change the form.whatever.data and when printing it, it shows the new value. But when I render the template it keeps showing the old value. I tried to do form.hours_estimate.data = "" before assigning it a new value just in case but it didn't work.

I will attach here the route I'm talking about. The important bit is after # Get form ready for next service. If there's more info needed please let me know.

Thank you very much.

I'm working on a app with RBAC and I'm trying to populate a QuerySelectField with data from my Role database model but it doesn't work because I'm constantly getting one of those two errors:

I am trying to write an app that will allow a user to view a playlist, and then add songs to the playlist (only if the song is not already on the playlist). I am using SQLAlchemy and WTForms inside of Flask to do this.

My code for the app route is:

I have Airflow deployed in virtual env and in case I try to execute PythonVirtualenvOperator with import of the Airflow module (to get Variables for example) it gives me the AttributeError. Guess I do not fully understand how Airflow executes VirtualenvOperator, and therefore what to do to overcome it, so any suggestions and insights will be highly appreciated

My test DAG code