I’m pretty sure there is a mix task that can do that 
Zesky665
Kurisu
Really ? What I mean is that the library will compare the existing migrations with the model files and add if necessary the right migrations.
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Zesky665
That depends on if you’re using a single migration for each model. Is there a lib in another language that does the same? I’d like to get my head around how this works.
1
darkmarmot
I came from C, C#, AS3 and JavaScript primarily.
The hard parts for me have been macro related.
First, understanding language syntax where macros have created ‘sugar’.
And, now, trying to write basic macros has been a major pain.
I’ve tried following the tutorials and books and it’s definitely been the most painful learning experience I’ve had in my programming career. Just so much frustration.
OTP and the Erlang VM have also been big shifts for me – but not as impenetrable as the macro stuff.
5
Kurisu
Well I know that python framework, Django does that. The concept is simple, the library keeps a log of all the migrations made in the application and that give it an idea of the actual database structure, then it compares it with what the models are saying ans create new migrations that will be saved for future comparison of course…
But as they says it in the docs it is not perfect:
Your models will be scanned and compared to the versions currently contained in your migration files, and then a new set of migrations will be written out. Make sure to read the output to see what
makemigrationsthinks you have changed - it’s not perfect, and for complex changes it might not be detecting what you expect.
Here is the link to read more about it: Migrations (Django docs)
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sribe
kennethuy
Area that I am finding most challenging is understanding the concepts in Phoenix, namely contexts.
Being familiar with Rails, the whole MVC structure is familiar to me. However, I just cannot fully wrap my head around the whole idea of contexts and how to go about doing it. I have spent countless weeks reading different blog posts, the Phoenix documentation, different codebases, youtube videos, books, and threads on this forum so I get the various ways that others have discussed, yet when it comes time to do mix phx.new for myself, I am always left thinking “Does this look right?” or “Wait, this is ok…right?” every time.
4
peerreynders
Spend some serious time to understand the ins and outs of setTimeout - especially what happens when multiple closures are scheduled with a delay of 0 How JavaScript Timers Work (the basis for 13.2. Taming timers: time-outs and intervals) may be a good starting point then maybe move on to something like Understanding the Node.js Event Loop.
If you are so inclined also look into the Reactor and Proactor pattern.
That may give you a more intuitive sense of how the JavaScript event loop cooperatively schedules code - which may make dealing with asynchronous code easier.
Once there, you may also appreciate Functional Programming in Javascript
6
federico
Contexts in Phoenix are still only about a year and a half old, so the definitive guide on how best to structure them in your app might not be written yet. Phoenix Inside Out, however, is a contender for the best current resource out there, in my opinion; not only because of the in-depth explanation of contexts and all things Phoenix, but because of the realistic walkthrough of building an e-commerce website using Test Driven Development and other Agile (or Extreme) Programming practices that you’ll encounter in real world projects, today.
@Kennethuy, you say that you’ve spent countless weeks consuming various resources, which is great! Have you heard of the book? I’ve spent a couple of years trying to consume everything Elixir and Phoenix, so I’ve had some time to weigh the choices. Even though there aren’t as many resources, compared to other languages/frameworks, there’s enough out there (most of it good) to keep you occupied and eventually prepared, as you keep putting what you learn to practice. Don’t give up! Search the forums for more recommendations and answers.
2
vasar
I think Elixir itself is not hard to learn, I would say it was quite easy as everything is well documented and there are plenty of good resources, but not so many that you get confused. For example in Javascript or PHP even more, there are so many articles with very questionable content, because there are just so many people producing it. Here generally everything is really well documented so you don’t need to search for external resources.
For me the hardest part was getting into functional mindset and how to design applications/libraries. I didn’t find much resources on this topic, so I read some other languages articles discussing this and actually found that most high level principles are actually the same. The problem was that I expected everything to be different.
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