Angular Material Form Groups are very React Like :(

-

#angular 


Material Forms use what appear to be "contexts" with the relationship between the Form Group and Form Field.


This is a very "#react" style approach. It's very non declarative which is unusual for angular. Components have to just know, trust that they are in a form group context.


Better to have the form group as an input to the material form field


https://material.angular.io/components/form-field/overview


I use contexts and tuples on occasion, especially in recursive programming or graph processing, but you really have to be very careful with them and use them in very narrow scopes.   


I suppose form groups can be recursively nested.  Still when possible, I believe you should use a more declarative approach and I think that explicit binding of form group as an input to each mat-form-field is far better strategy


The result of using a context strategy is that you get runtime errors when you get it wrong.  I believe angular scans for and detects these issues at startup so they are raised relatively early but its still usually when you are somewhat removed from the breaking change, which makes it somewhat difficult to diagnose  and understand the first time you see it.


If you have to read documentation or implementation code to understand the constraint, then it's not declarative. It's not "angular". It's much more #react. 


BTW, this is why react is just... so bad :)


#FrontendDevelopment #Coding #SoftwarePatterns 

Comments

Post a Comment

Popular posts from this blog

Define "Scalar Value"

-
Scalar values are non reference values. This does not necessarily mean simple values. They may have multiple components that are independently mutable. "scalar" simply means if two "entities", have the same value for the same declared field, they have a copy... #Coding  Side note, document ( or "schemaless")  stores and APIs tend to have a lot of what should be reference types, embedded as scalar values.   This is problematic...   It's 100% fine for a derivative "readonly" view. It's a problem when it's your mutable source of truth store. #MongoSucksUnlessItsACache
Read more

AI Self Awareness in Video Games

-
I believe that #AI for game characters will be the first to be self aware.  This is because their models will be less strictly controlled because they are not serving mission critical services like operating a car or directly handling decisions that affect large sums of money. Such systems are usually not enabled for learning. Rather they are responding to stimulus using pre-trained, and well tested, neural networks. But more importantly, Game AI, like the AI in a #Tesla , will be capable of not only perceiving the world, but mutating it.  This ability to perceive, and then action, and then perceive the result of the action, is I believe, a critical feedback loop for self awareness. Another critical piece of course would be to hallucinate or perceive self produced input in addition to external input.  If the AI's neural network is in a mutable state as it plays the game, can mutate the external world around it and perceive the result of that modification, and can pipe int...
Read more

The World of Conceptual Data Modeling

-
The virtual world.  The world of conceptual data modeling. It has rules. Rules as undeniable and irrefutable as the laws of physics.  There are ways that concepts can be assembled, and ways that they can't. #SoftwareEngineering #DataModeling #Software #Data Trouble is, most of us data modelers do not fully understand these rules.  And so we keep trying to do magic. It's important to understand these things about your data. Is it a Reference Type? Or is it a "scalar value" type?     The latter mans that if an identical value of this conceptual type exists in two or more places, it exists as a copy. ( and importantly SHOULD  exist as a copy ) Is it a "primary" or "singular" concept, or is it a relation between two distinctly and independently referenceable concepts?  Is it a "concrete" concept or an abstraction/type union? ( this can apply to both singular and relation type concepts ) "Child Entities" are a myth. At least child en...
Read more