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Link rel=alternate header for tables and rows

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Also added Access-Control-Expose-Headers: Link to --cors mode.

Closes #1533

Refs https://github.com/simonw/datasette-notebook/issues/2

LL#	metadata.json.1
This commit is contained in:
Simon Willison 2021-11-27 12:08:42 -08:00
commit 3ef47a0896
9 changed files with 86 additions and 6 deletions
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22
datasette/views/table.py
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@ -17,6 +17,7 @@ from datasette.utils import (
is_url,
path_from_row_pks,
path_with_added_args,
path_with_format,
path_with_removed_args,
path_with_replaced_args,
to_css_class,
@ -850,7 +851,12 @@ class TableView(RowTableShared):
for table_column in table_columns
if table_column not in columns
]
alternate_url_json = self.ds.absolute_url(
request,
self.ds.urls.path(path_with_format(request=request, format="json")),
)
d = {
"alternate_url_json": alternate_url_json,
"table_actions": table_actions,
"use_rowid": use_rowid,
"filters": filters,
@ -881,6 +887,11 @@ class TableView(RowTableShared):
"metadata": metadata,
"view_definition": await db.get_view_definition(table),
"table_definition": await db.get_table_definition(table),
"_extra_headers": {
"Link": '{}; rel="alternate"; type="application/json+datasette"'.format(
alternate_url_json
)
},
}
d.update(extra_context_from_filters)
return d
@ -964,8 +975,12 @@ class RowView(RowTableShared):
)
for column in display_columns:
column["sortable"] = False
alternate_url_json = self.ds.absolute_url(
request,
self.ds.urls.path(path_with_format(request=request, format="json")),
)
return {
"alternate_url_json": alternate_url_json,
"foreign_key_tables": await self.foreign_key_tables(
database, table, pk_values
),
@ -980,6 +995,11 @@ class RowView(RowTableShared):
.get(database, {})
.get("tables", {})
.get(table, {}),
"_extra_headers": {
"Link": '{}; rel="alternate"; type="application/json+datasette"'.format(
alternate_url_json
)
},
}
data = {