Flemming Posts - Answer Overflow

Flemming

•Created by Flemming on 2/6/2025 in #support

createSignal equals: false on mutable object value

Hi guys, I have a resource source signal with { equals: false } that does not trigger fetching unless I wrap and deep copy the object literal value in the source param. The value itself is a propety of an instance wrapped with createMutable, which I suspect is at the crux of this. But why? I though equals: true would guarantee a truthy source signal on setting?

const muatable = createMutable(myClassInstance)
[...]
const [onSaveSignal, setSaveSignal] = createSignal(mutable.data, { equals: false })
[...]
createResource(
   onSaveSignal,
   (sigObjValue) => {
     fetch...
   }
);

const muatable = createMutable(myClassInstance)
[...]
const [onSaveSignal, setSaveSignal] = createSignal(mutable.data, { equals: false })
[...]
createResource(
   onSaveSignal,
   (sigObjValue) => {
     fetch...
   }
);

Above not working, below working.

createResource(
   () => deepCopy(onSaveSignal()),
   (sigObjValue) => {
     fetch...
   }
);

createResource(
   () => deepCopy(onSaveSignal()),
   (sigObjValue) => {
     fetch...
   }
);

shallow structuredClone also fails.

29 replies

SSolidJS

•Created by Flemming on 3/2/2023 in #support

Suspense triggered witout reading data

So... trying to wrap my head around suspense. This is based off the "Real word" Solid example: I have a service with a store which is populated through actions on singin/signup. I have Login-component with a resource for each of them, signin/up + load data. The login component doesn't use any of those resources' data itself, but it still "owns" the loading spinner, so Suspense seems a natural candidate. What would be a idiomatic way to solve/structure this? My cleanest workaround so far is to include a call to a suspense-trigger in the JSX. The trigger is just this:

  const suspenseTrigger = () => {
    signupData();
    signinData();
    userData();
    return '';
  };

  const suspenseTrigger = () => {
    signupData();
    signinData();
    userData();
    return '';
  };

...but I am not happy with it as it tells me I should be doing stuff differently. Thanks.

9 replies

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