Original title: Generating URL for a row inside render_cell hook**

Hey, I am using Datasette to view a database that contains video metadata. It has BLOB columns that contain video thumbnails in JPG format (around 100-500KB per row).

I've registered an output formatter that extends datasette.blob_renderer.render_blob function and serves the column with image/jpeg content type.

```python from datasette.blob_renderer import render_blob

async def render_jpg(datasette, database, rows, columns, request, table, view_name): response = await render_blob(datasette, database, rows, columns, request, table, view_name) response.content_type = "image/jpeg" response.headers["Content-Disposition"] = f'inline; filename="image.jpg"' return response

@hookimpl def register_output_renderer(): return { "extension": "jpg", "render": render_jpg, "can_render": lambda: True, } ```

This works well. I can visit http://localhost:8001/mydb/videos/1.jpg?_blob_column=thumbnail and view the image.

I want to display the image directly with an <img> tag (lazy-loaded of course). So, I need a URL, because embedding base64 would increase the page size too much (each image > 100KB).

Datasette generates a link with .blob extension for blob columns. It does this by calling datasette.urls.row_blob

https://github.com/simonw/datasette/blob/7a2ed9f8a119e220b66d67c7b9e07cbab47b1196/datasette/views/table.py#L169-L179

But I have no way of getting the row inside the render_cell hook.

python @hookimpl def render_cell(value, column, table, database, datasette): if isinstance(value, bytes) and imghdr.what(None, value): # generate url return '$renderedLink'

Any pointers?

At the moment it looks like this https://datasette-graphql-demo.datasette.io/github/repos

Adding a few flex statements fixes the alignment and centers h1 text and the cog icon vertically.

Just a quick heads up:

Release notes for 0.45 include urls that point to localhost.

https://github.com/simonw/datasette/releases/tag/0.45

Hey,

I'm trying to get canned inserts to work. I have an DB with following metadata:

```text sqlite> .mode line

sqlite> select name, sql from sqlite_master where name like '%search%'; name = search sql = CREATE TABLE "search" ("id" INTEGER NOT NULL PRIMARY KEY, "name" VARCHAR(255) NOT NULL, "url" VARCHAR(255) NOT NULL) ```

```yaml

...

queries: add_search: sql: insert into search(name, url) VALUES (:name, :url), write: true `` which renders a form as expected, but when I submit the form I getincomplete input` error.

but when submit post the form

I've attached a debugger to see where the error comes from, because incomplete input string doesn't appear in datasette codebase.

Inside datasette.database.Database.execute_write_fn

https://github.com/simonw/datasette/blob/4fa7cf68536628344356d3ef8c92c25c249067a0/datasette/database.py#L69

py result = await reply_queue.async_q.get()

this line raises an exception.

That led me to believe I had something wrong with my SQL. But running the command in sqlite3 inserts the record just fine.

text sqlite> insert into search (name, url) values ('my name', 'my url'); sqlite> SELECT last_insert_rowid(); last_insert_rowid() = 3

So I'm a bit lost here.

• datasette, version 0.44
• Python 3.8.1

Datasette fails to serve files from static mounts that are created using relative paths datasette --static mystatic:rel/path/to/static/dir.
I've explained the problem and the solution in the pull request: https://github.com/simonw/datasette/pull/554