Dynamic key support in GuardedStruct

[svsool]

Hi,

Are dynamic keys supported in GuardedStruct?

For example with such input:

   { 
      knownField1: { 
         knownField2: { 
            [dynamicKey1 ... dynamicKey100]: KnownStruct 
         },
      knownField3: ...,
      ...
   }

Would be nice to avoid using custom validator in such cases.

Thanks!

[shahryarjb]

Hi dear @svsool ,
Would you mind giving me a full scenario, please 🙏?
For example a complete map and how do you want to validate the Daynamic part?
It helpes me to recognize what solutions can be help full here.
By the way we separated the repo and please update your dep.
Thank you in advance

[svsool]

Hi @shahryarjb,

For example:

defmodule ShardStruct do
  use GuardedStruct

  guardedstruct do
    field(:node, String.t(), derive: "sanitize(trim) validate(ipv4)")
    
    # ... other fields here ...
  end
end

# map with dynamic keys
defmodule ShardsMapStruct do
  use GuardedStruct

  guardedstruct do
    # dynamic key ⬇️ <--- this feature basically would be great to have
    field(~r/\d+$/, struct(), struct: ShardStruct, derive: "validate(map, not_empty)")
  end
end

defmodule ShardingPlanStruct do
  use GuardedStruct

  guardedstruct do
    field(:shards_map, struct: ShardsMapStruct, enforce: true)

    # ... other plan fields here created_at, status etc ...
  end
end

In Ajv it's called patternProperties.

[shahryarjb]

@svsool
It could be a great opportunity, but honestly, I don't think I'll be heading in that direction anytime soon. Right now, I'm really caught up with the Mishka Chelekom phoenix component library, and handling everything alone is quite tough.

I’m sorry to say this, but I might consider it in the future, or I’d be really happy if someone submits a pull request.

The macro's goal was to avoid being too dynamic and to have strict mode check the keys and build a schema.

But this feature also has its own use case and would be great to have if added.

Thanks for taking the time to explain.
Don’t forget to update to the latest version of this library!

{:guarded_struct, "~> 0.0.4"}