Use sectionPrefix when using an empty name on a Field inside a FormSection

[SBRK]

I found myself wanting a Field which, inside a FormSection would use the name passed to the FormSection. For that, I tried passing name='', to no avail.

This is useful if, like in my case, you want a text field to edit your whole section as JSON, while also having other fields editing different fields of the section:

<FormSection name='foo'>
 <JSONField name=''/> // Will edit foo as json
 <InputField name='title'/> // Will edit foo.title
 [...]
</FormSection>

[codecov]

Codecov Report

Merging #4118 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #4118   +/-   ##
======================================
  Coverage     100%    100%           
======================================
  Files          72      72           
  Lines        1666    1666           
======================================
  Hits         1666    1666

Impacted Files	Coverage Δ
src/util/prefixName.js	100% <100%> (ø)	⬆️

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[gustavohenke]

Must include some tests.

Improving the docs would be good, but not a must IMO.

[danielrob]

I'd worry about the 0 case. Not that numerical names particularly work anyway, but I think some people have used them to e.g. access array indexes. Might be good to explicitly check name === '' just in case.

[codecov-io]

Codecov Report

Merging #4118 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #4118   +/-   ##
======================================
  Coverage     100%    100%           
======================================
  Files          74      72    -2     
  Lines        1694    1669   -25     
======================================
- Hits         1694    1669   -25

Impacted Files	Coverage Δ
src/util/prefixName.js	100% <100%> (ø)	⬆️
src/immutable.js	100% <0%> (ø)	⬆️
src/ConnectedField.js	100% <0%> (ø)	⬆️
src/Form.js	100% <0%> (ø)	⬆️
src/createReducer.js	100% <0%> (ø)	⬆️
src/util/isHotReloading.js	100% <0%> (ø)	⬆️
src/structure/immutable/index.js	100% <0%> (ø)	⬆️
src/index.js	100% <0%> (ø)	⬆️
src/FormSection.js	100% <0%> (ø)	⬆️
src/structure/immutable/deepEqual.js	100% <0%> (ø)	⬆️
... and 14 more

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[SBRK]

@danielrob @gustavohenke I added the tests and handled the case name = 0

[erikras]

I wonder if this should be documented somehow? Maybe a paragraph under FormSection?

[erikras]

Sorry, but you'll need to refactor this with the new context API.