hackjob | Making it easier to find a job on HN | Frontend Framework library

I am building a product admin with flask-admin. Products can have single or multiple variant sets. For example a t-shirt can have a "size" set, containing records for S, M, L. A jacket can have both "size" and "color" (red, green, yellow, etc) sets.

Ideally I'd like the administrators to be able to CRUD all product variants from the product view. All other fields on the product view would just be the regular flask-admin default fields for the model. Example sketch:

I'm new to flask-admin, so before I start hackjobbing this up, is there a previously-trodden path for building out such relationships in the a flask-admin-driven UI? I'm thinking some field override that loads a custom widget (or another model view) either in-page or in a modal window?

A simplified outline of the approach I'm taking with flask-sqlalchemy is below.

products

I'm still relatively new to all this so please bear with my hackjob code. I'm attempting to use JavaScript to toggle the visibility of a div on my webpage once the value of a dropdown menu is changed. For some odd reason, it is not working and I have exhausted every solution I have come up with. Google doesn't help too much, mainly cause I don't know the correct terms to search for and what to look for.

Could anyone help me with this? Here is the code I am having issues with:

I have a pandas.DataFrame with several columns, some with continuous data others with categorical. I've been trying to first group by category and then within each category split into arrays based on a condition (namely value between two numbers)

Here is a brute force hackjob I wrote that does the job, but I was wondering if there was a more elegant way.

Please excuse the hackjob! Still new at coding and was utilizing a lot of sys outs to troubleshoot, and this is my first post at StackOverflow. Thank you for the help!

So I've been working on trying to encrypt String objects using the javax.crypto.Cipher API, and I have found some success, but only when it is using the same instance of the Cipher object. However, for the purposes of my project, I am encrypting text (String) to and decrypting text from a text file, and will not be accessing the same Cipher object every time.

I believe the issue is not from converting between the byte arrays and Strings, since the Base64 encoder seems to have taken care of that problem. The output of the byte arrays are identical pre-encoding and post-decoding, so that should isolate it as an issue during the decryption phase. What can be done so that my decryptPW method can use a different Cipher instance (with the same arguments passed) and not trigger a BadPaddingException?

I use the Node Exporter Server Metrics dashboard for visualizing server metrics from prometheus.

I'd like to build a table that lists out all nodes that are reporting a certain job and links to the server metrics dashboard for that node.

I've been trying to do a query like: up{job="telemetry-node"}. The problem is that the return of that is simply the value "1", because the node is up, so the table wants to list timeseries data, I can't figure out a query that would return info about the node in a way that I could display it in a table.

I got this working in a hacky way by setting the Legend Format to {{instance}} to list the instance name as Metric in the table, set override relative time to 1s, and used column styling to hide Time and Value. I'd really like to find a better solution.

With either a proper solution or my hackjob above is there a way for me to format the contents of the table to be a link to another dashboard? I see that I can set a Drilldown Link in the General settings but that seems to be for the panel, not individual entries in the table.

Thanks for your help!

My problem is as following:

I have an abstract class called Product and 2+ subclasses called Book and Magazine. Magazine has 1 extra method that isn't found in Product or Book.

So far so good. But I want to store these different products in 1 array like so:

List products = new ArrayList<>(); products.add(new Book()); products.add(new Magazine());

Still no problems right? However at this point I also want to do this(index 1 is a Magazine):

products.get(1).magazineMethod()

And this is where everything falls flat. I know of instanceof and how that would solve my problem. However upon googling and looking on stackoverflow it seems that using instanceof in this matter is bad. For every different Product subclass I would have to add another check with instanceof. I asked my teacher about this and he couldn't give me a proper answer and told me he would check it out.

I know how polymorphism works where if the Product also had magazineMethod() it would work. But that makes no sense since a Product isn't a Magazine and doing that would defeat the whole point of inheritance.

And yes, this is part of homework but the question in my mind is so fundamental that I'd like the proper solution to this instead of some workaround/hackjob.

Pretty sure there's an easy fix for this, but I'm inexperienced in array handling when it comes to PDO statements

Purpose: To retrieve a set of id's from the database, then use those ids to compare and retrieve