Weeknotes 2023-09-25
,Anything worth doing is worth doing badly. — G. K. Chesterton
Worked on frontend stuff again last week. I think my favorite way to combine htmx with Alpine.js when you have to pass some parameters is to just use the htmx API like this:
<div
{# fmt:off #}
x-data="{
value: false,
toggle() {
this.value = ! this.value;
htmx.ajax(
'GET',
'{% url 'some-detail-url' pk=model.pk %}', {
target: '#some_target_id',
values: { toggle_state: this.value }
});
}
}"
{# fmt:on #}
x-id="['toggle-label']"
>
<!-- ... later on, you'll just have -->
<button x-ref="toggle" @click="toggle()" type="button" role="switch" :aria-checked="value" :aria-labelledby="$id('toggle-label')">Toggle</button>
</div>
Didn't have much time for my own projects, but released django-cast 0.2.22 because I forgot to do this last week 😑. Then I noticed that I forgot to publish a TIL post about the new STORAGES setting in Django 4.2. Middle of the week I went to the Django Cologne meetup and had many interesting discussions with different people. Sarah talked a bit about the djangonaut.space project, which I'm also interested in, so it was a really nice evening.
Talking about doing things badly. I tried to upgrade an old project to pydantic > 2 and failed spectacularly. After upgrading I got this error message:
super().__init__(
File "../pydantic/main.py", line 165, in __init__
__pydantic_self__.__pydantic_validator__.validate_python(data, self_instance=__pydantic_self__)
pydantic_core._pydantic_core.ValidationError: 1 validation error for Settings
db_engine
Field required [type=missing, input_value={'database_url': 'postgre... 'services_development'}, input_type=dict]
For further information visit https://errors.pydantic.dev/2.3/v/missing
And somehow I misread this error message as being about the database_url field. But it was actually complaining that the db_engine field was missing. The problem was caused by a db_engine: typing.Any field that was None by default in pydantic < 2 and does not get a default value in pydantic > 2 as documented in the migration guide.
This took me far too long to fix, and it felt far too similar to the dread caused by updating old Javascript projects.
Articles
- Smooth Database Changes in Blue-Green Deployments | The idea is to separate code and db changes and roll them out in different deployments - didn't know Django had builtin support for this 😎.
- Django: Move a template tag library into builtins
- Keep content managers’ Django admin access up-to-date with role-based permissions | The permissions topic also came up multiple times during the meetup and the solutions were quite similar
- Upload your brain: How to add serverless functions to Django in 6 minutes (with HTMX and AWS Lambda) 🧠 | Interesting idea to just call serverless functions for long running tasks
- Wie wäre es, gebildet zu sein? | Just to be able to find this article again...
- Building a decent microphone amplifier
- Photography for geeks is now available in a german translation Fotografie für technisch Interessierte | Nice!
- Ditch That Else | Yep
- The #ViewSource Affordance | I have never been part of this web development culture, but maybe I should be?
- Form Validation: You want :not(:focus):not(:placeholder-shown):invalid, not :invalid | Glad there's a solution for this now 😅
- Processing a 250 TB dataset with Coiled, Dask, and Xarray# | I have often scoffed at using the cloud as difficult, expensive and inefficient, but this looks pretty decent.
Weeknotes
Software
- State of HTML 2023 | Got 20% - need to work on my HTML knowledge I guess 👀
- Mastodon 4.2 - A new search experience and more!
- Trivy is a comprehensive and versatile security scanner
- blip-caption - A CLI tool for generating captions for images using Salesforce BLIP | Hmm, maybe I should use this to generate alt text for my images?
Videos
- Andrew Ng: Opportunities in AI - 2023 | Spot on
- Add database search with Django and HTMX 🕵️
- EuroPython 2023 videos 🎥
Podcasts
- Episode 87: Death (Hotel Bar Sessions) | Good episode
- Postgres 16 Released, The Postgres Meme, File vs base64 Strings, Intelligent Sharding | Scaling Postgres 282 (Scaling PostgreSQL)
- Miles Grimshaw: Benchmark, LangChain, and Investing in AI (The Gradient)
- Revision 584: Solid.js & SolidStart (Working Draft)
- Git and Django 5.0 - Adam Johnson (Django Chat) | Good one