note-app | React.js Note Application | Frontend Framework library

I'm working to create a notes application (api + website) on a single custom domain (ex : mysub.domain.com). I'd like the

• API Gateway for all my Lambdas to be accessible thru the path of /api/
• Have the rest of my paths for the domain serve up from an s3 static website

Currently,

• I have my lambda endpoint working at https://mysub.domain.com/api/notes (SSL is already working and in AWS console)
• via BasePathMapping (see yaml below)
• already added a CNAME record for my subdomain pointing to the Cloudfront endpoint that was created with $ sam deploy

Fellow developers,

I'm trying to create a multilanguage site with Material Design Lite, in the past I have used this library:

How to Create a Multilingual Application using JavaScript

And works pretty well, it expects a JSON (en.json) like this:

I have a Note-App. In the Main Activity the Notes are going to be listed with a RecyclerView. To apply changes in the database I use FirestoreRecyclerOptions.
But I have a big problem. First, everything works fine. When the ListItems are changed once or more than one time everything gets confusing. Then these things happen:

1. RecyclerViewItems are invisible (https://www.dropbox.com/s/76e0pi3bgmqdk4u/empty_list.mp4?dl=0)
2. RecyclerViewItem doesn't show (https://www.dropbox.com/s/5ai92ypev1509qg/dont_show.mp4?dl=0)
3. RecyclerViewItem doesn't remove (https://www.dropbox.com/s/3k2k3ryecfwnqil/dosnt_remove.mp4?dl=0)

In the Videos, you can see all Items will work correctly after you scroll in the recycler view. I don't know why? Maybe the recyclerview than gets really reloaded?

Here is how I set up the RecyclerView and when I call the Adapter(Snippet of MainActivity):

I want to modify this Notes app to work with email/password logins instead of using google accounts:

Build a Progressive Web App with Firebase, Polymerfire and Polymer Components

I am playing with Polymer 2.0, and I don't understand how to pass an object as an element attribute.

Here's my code:

I have seen several members on this forum warn about creating tables in a database while the app is running. Instead it is encouraged to create the tables while programming, and only fill the tables with data during runtime.

E.g while creating a note-app it would be convenient to let the user specify a name for a single note, and let this note be created as a table in a database. This by creating the table at the time the user creates the note, and letting the name of the note be the name of the table. Why would this be a bad practise? Have I misunderstood?

I have started with Laravel + Pusher and used the demo application from Pusher blog. Here in the source code it is described how the user connections are counted. But I am struggling how to count the sessions by user as an additional value.

Example: Jane and John connect I get 2 for usersEditing.length. If Jane connects from two browser I get 1 for usersEditing.length.

I'm making a to-do application in Polymer 2.0. The problem is when I add a note. It adds it like it should however, when I add another one, he writes 2 notes to the array. I can't find my problem. Also I use var that = this. Couldn't this be done any cleaner?

I'm trying to add two related items to my Firebase database. I want to push one item, then get that item's newly created key and use it as the key for the second item in a different tree. I've tried querying the database to get the last key created and using it as the key for the second push, but it's still just generating a new key for it. Here's the code that I'm using: