umbra
Simple question, how to add a default Ecto.Date value to a field without using timestamp?
alter table(:registro) do
modify :data, :date, [null: false, default: Ecto.Date.utc()]
end
I know that this isnt the right way to do, but the exception still bugs me
(ArgumentError) unknown default #Ecto.Date<2017-03-21> for type :date. :default may be a string, number, boolean, empty list or a fragment(…)
Thanks
Where Next?
Trending in Questions
Other Trending Topics
Latest on Elixir Forum
Sponsor Spotlight
Elixir, Erlang & messaging conferences from Code Sync. Next up: ElixirConf US (10–11 Sep) & Code BEAM Europe (21–22 Oct), Haarlem + online.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixirconf-us
- #ai
- #blog-post
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #metaprogramming
- #hex
- #security
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.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Practical resources that improve the lives of professional developers.
Master modern tools, write cleaner code, and tackle real-world challenges.
Producing high quality Elixir screencasts since 2017.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Marked As Solved- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
outlog
I believe a fragment is best described as ‘custom sql’
the now() function is a function in postgres PostgreSQL: Documentation: 9.6: Date/Time Functions and Operators
modify :data, :date, [null: false, default: fragment("now()")]should work, although you are using a date field, so I’m not 100% - you might need to use:
modify :data, :date, [null: false, default: fragment("current_date")]Also Liked
umbra
Ok, can you explain whats a fragment and how to use it?
the fragment() function is calling a now() function?
outlog
the exception message is actually pretty good.. you need to use a fragment - see docs for solution
https://hexdocs.pm/ecto/Ecto.Migration.html#fragment/1
umbra
Thank you very much! =)