htmx send files using htmx.ajax() call
In a drag and drop file upload workflow I had the need to use htmx.ajax() to fire a network call to upload files, but I had some trouble sending data to the server.
After some research I found out using htmx.ajax() you cannot (at the time of writing) set the Content-Type header to multipart/form-data, which is what makes file uploads possible in HTTP.
To overcome this, you must set the hx-encoding attribute in the HTML, and use the source property in the context object passed to htmx.ajax():
<div
...
hx-post={`/upload`}
hx-encoding="multipart/form-data"
hx-trigger="none"
>htmx.ajax('POST',
event.currentTarget.getAttribute('hx-post'), {
values: {
files: formData.getAll('files')
},
source: event.currentTarget,
})download all my books for free
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