defaultValue in Array fields should populate model with SimpleSchema

[Floriferous]

When you set a defaultValue in an Array field with SimpleSchema, the initial model doesn't properly reflect it:

const schema = new SimpleSchema({
  list: { type: Array, defaultValue: [{ title: 'Hello world' }] },
  'list.$': Object,
  'list.$.title': String,
})

When a form mounts with this schema, I expect the list field to be already populated with one element, with the title field filled. The model should also contain this data immediately, and not after editing the form first.

Currently, this defaultValue has no effect, and the array is initialized as empty.

[wadamek65]

Hi @Floriferous , thanks for the issue report.

I've checked the behavior that you have described and it seems like there is a problem with logic in the bridge.

JSON Schema bridge seems to return defaultValue right away and returns undefined as a fallback, whereas in SimpleSchema defaultValue is returned as a fallback - in this case the code follows the type === Object path and returns an empty object.

@radekmie Do you know if there is any exact reason for this inconsistency or is this simply an oversight? If it's an oversight, I will create a fix for this.

[radekmie]

@wadamek65 No, that's just an oversight. Feel free to take this one.