Expand foreign key references in row view as well

[tmcl-it]

Unlike the table view, the single row view does not resolve foreign key references into labels. This patch extracts the foreign key reference expansion code from TableView.data() into a standalone function that is then called by both TableView.data() and RowView.data().

---

📚 Documentation preview 📚: https://datasette--2031.org.readthedocs.build/en/2031/

[simonw]

This is a very neat fix, for something I've been wanting for a while.

Add a unit test for the row HTML page - I suggest against this page: https://latest.datasette.io/fixtures/foreign_key_references/1 - and I'll land this PR.

You can model it on this test here:

datasette/tests/test_table_html.py

Lines 609 to 632 in a53b893

	@pytest.mark.asyncio
	async def test_table_html_foreign_key_links(ds_client):
	response = await ds_client.get("/fixtures/foreign_key_references")
	assert response.status_code == 200
	table = Soup(response.text, "html.parser").find("table")
	actual = [[str(td) for td in tr.select("td")] for tr in table.select("tbody tr")]
	assert actual == [
	[
	'<td class="col-pk type-pk"><a href="/fixtures/foreign_key_references/1">1</a></td>',
	'<td class="col-foreign_key_with_label type-str"><a href="/fixtures/simple_primary_key/1">hello</a>\xa0<em>1</em></td>',
	'<td class="col-foreign_key_with_blank_label type-str"><a href="/fixtures/simple_primary_key/3">-</a>\xa0<em>3</em></td>',
	'<td class="col-foreign_key_with_no_label type-str"><a href="/fixtures/primary_key_multiple_columns/1">1</a></td>',
	'<td class="col-foreign_key_compound_pk1 type-str">a</td>',
	'<td class="col-foreign_key_compound_pk2 type-str">b</td>',
	],
	[
	'<td class="col-pk type-pk"><a href="/fixtures/foreign_key_references/2">2</a></td>',
	'<td class="col-foreign_key_with_label type-none">\xa0</td>',
	'<td class="col-foreign_key_with_blank_label type-none">\xa0</td>',
	'<td class="col-foreign_key_with_no_label type-none">\xa0</td>',
	'<td class="col-foreign_key_compound_pk1 type-none">\xa0</td>',
	'<td class="col-foreign_key_compound_pk2 type-none">\xa0</td>',
	],
	]

I think adding it to test_table_html.py is OK, even though it's technically for the row page and not the table page.

Thanks!

[codecov]

Codecov Report

Patch coverage: 97.72% and project coverage change: -0.36 ⚠️

Comparison is base (3feed1f) 92.46% compared to head (c8a2904) 92.11%.

❗ Current head c8a2904 differs from pull request most recent head ef25867. Consider uploading reports for the commit ef25867 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2031      +/-   ##
==========================================
- Coverage   92.46%   92.11%   -0.36%     
==========================================
  Files          38       38              
  Lines        5750     5556     -194     
==========================================
- Hits         5317     5118     -199     
- Misses        433      438       +5     

Impacted Files	Coverage Δ
datasette/views/table.py	92.57% <97.56%> (-3.35%)	⬇️
datasette/views/base.py	95.17% <100.00%> (+2.38%)	⬆️
datasette/views/row.py	87.93% <100.00%> (+0.10%)	⬆️

... and 8 files with indirect coverage changes

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[tmcl-it]

I've implemented the test (thanks for pointing me in the right direction!).

At tmcl-it/datasette:0.64.1+row-view-expand-labels I also have a variant of this patch that applies to the 0.64.x branch. Please let me know if you'd be interested in merging that as well and I'll open another PR.

[simonw]

I've implemented the test (thanks for pointing me in the right direction!).

At tmcl-it/datasette:0.64.1+row-view-expand-labels I also have a variant of this patch that applies to the 0.64.x branch. Please let me know if you'd be interested in merging that as well and I'll open another PR.

Sure, let's merge that one too - it can go out in the next 0.64.x series release (maybe even a 0.65).

[tmcl-it]

I've rebased my patch on the latest main. It should be ready to merge.