safinto
Uploading an image via ajax
My code:
var fl = getFile(); //get file from <input type file />
var xhr = new XMLHttpRequest();
xhr.open("POST", "/file_upload", true);
xhr.send(fl);
However, on the server in “file_upload(conn, params)” the “params” if empty:
def file_upload(conn, params) do
IO.inspect(params)
# => protocol String.Chars not implemented for %{}
on the client “fl” isn’t empty
Most Liked
hubertlepicki
OvermindDL1
The parameters is a map, but you are not sending any parameters, when you send it you are sending it in the ‘body’, so check there. 
1
Popular in Questions
In Ruby, I can go:
User.find_by(email: "foobar@email.com").update(email: "hello@email.com")
How can I do something similar in Elixir?
...
New
If I have a post route which an argument:
post /my_post_route/:my_param1, MyController.my_post_handler
How would get the post params ...
New
can someone please explain to me how Enum.reduce works with maps
New
I believe there are people here who are dealing with CSV files import on the daily basis, and since Excel is a really popular tool there ...
New
Could someone help me? I’m making my first elixir program, number guessing game. I can’t figure out how to convert the user’s guess from ...
New
I want to highlight html closing tags when i click a html tag. That works in .html files but doesnt work for html.eex templates. How can...
New
Using vs code and installed ElixirLS: support and debugger.
And I got an error popped up on start up says
Failed to run ‘elixir’ comma...
New
I tried installing
elixir 1.11.2
erlang 23.3.4
via asdf in my zsh shell. Enabled the versions locally and globally.
When I list them ...
New
Original source of discussion: This topic on the Pragmatic Programmers’ Functional Web Development with Elixir, OTP, and Phoenix forum.
...
New
Hi!
Currently I want to submit a form by pressing the Enter key. However, since my input field is of type “textarea” this is just adds a...
New
Other popular topics
Erlang/OTP 25 [erts-13.2.2] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1]
15:22:35.803 [error] gen_event {lager_file_backend...
New
Hi,
I am new to Elixir. I am trying to use the DateTime component to insert a date into MySQL however the there seems to be no way to fo...
New
Good day to you all.
I have been struggling to get a query involving like and ilike to work.
Can anyone assist me on this, please?
pro...
New
I have a server on AWS, and was running a load test using artillery. When looking at the Phoenix dashboard I see the Ports going to 100% ...
New
Why is it that the mnesia database isn’t the most preferred database for use in Elixir/Phoenix?
New
Hello again - after a longish gap I’ve decided I really must dig into Elixir and see what’s been happening here - so I have a few questio...
New
Hello everybody,
usually, I use a 29" ultra-wide monitor for VSCode which can easily accomodate explorer (files panel) + file with code ...
New
Using vs code and installed ElixirLS: support and debugger.
And I got an error popped up on start up says
Failed to run ‘elixir’ comma...
New
I tried installing
elixir 1.11.2
erlang 23.3.4
via asdf in my zsh shell. Enabled the versions locally and globally.
When I list them ...
New
Hi everyone!
I need implement if…else if…else condition from my elixir code, and anymore of this control flow structures not work proper...
New
Latest Phoenix Threads
Latest on Elixir Forum
Sponsor Spotlight
Deploy Phoenix to your own VPS with PaaS ease: push-to-deploy, zero downtime, auto SSL, managed Postgres. 14-day free trial at potions.io
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #channels
- #elixirconf
- #exunit
- #discussion
- #code-sync
- #javascript
- #podcasts
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixir-ls
- #phoenix_html
- #iex
- #blog-post
- #graphql
- #genstage
- #ai
- #websockets
- #supervisor
- #advent-of-code
- #elixirconf-us
- #distillery
- #processes
- #forms
- #api
- #metaprogramming
- #security
- #performance
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Real-time error tracking, performance insights, and observability for devs.
Develop your skills with books, videos, and courses.
Producing high quality Elixir screencasts since 2017.
Enabling companies to succeed by building software people love.
Courses that'll move you from confusion to "Aha, now I get it!"