- Install dependencies with
mix deps.get - Create and migrate your database with
mix ecto.setup - Install Node.js dependencies with
npm installinside theassetsdirectory - Start Phoenix endpoint with
mix phx.server localhost:4000from browser.- Run a console and server in same process
iex -S mix phx.server - Run just a console
iex -S mix - reload code into console
recompile()
Basic ORM behaviors...
mix phx.gen.schema User users name:string email:string bio:string number_of_pets:integermix ecto.migrate- instantiate a new User validation,
PhxChat.User.changeset(%PhxChat.User{}, %{}) - after setting alias
Repo.insert(%User{email: "[email protected]"}) - to query said User
Repo.all(from u in User, select: u.email) - more on ecto, https://hexdocs.pm/ecto/Ecto.html
- it is something lix a hybrid of rails + django, more raw that active record (thats a good thing for learning sql)
- to reset/clear a db,
mix ecto.reset PhxChat.Repo.get PhxChat.ChatChannel, 1to query for id 1 of X Class
|>a pipe, use everything left of the pipe as inputs to everything right of the pipe likeA |> List.ordermeans order list a- Context - a collection of module, files code all related to some kind of domain object, lots of generators to make thse
Telemetry- a complex, customizable way to instrument and measure anything inside a phx app (seems very useful), basics already in use in Phx, using it more deeploy requires a use case- Presence a useful tool that allows aggregation of data about who/what is connected to sockets, channels
- general phx tasks
johnd@MacBook-Air phx_chat % mix help --search "phx" master
mix local.phx # Updates the Phoenix project generator locally
mix phx # Prints Phoenix help information
mix phx.digest # Digests and compresses static files
mix phx.digest.clean # Removes old versions of static assets.
mix phx.gen.cert # Generates a self-signed certificate for HTTPS testing
mix phx.gen.channel # Generates a Phoenix channel
mix phx.gen.context # Generates a context with functions around an Ecto schema
mix phx.gen.embedded # Generates an embedded Ecto schema file
mix phx.gen.html # Generates controller, views, and context for an HTML resource
mix phx.gen.json # Generates controller, views, and context for a JSON resource
mix phx.gen.live # Generates LiveView, templates, and context for a resource
mix phx.gen.presence # Generates a Presence tracker
mix phx.gen.schema # Generates an Ecto schema and migration file
mix phx.gen.secret # Generates a secret
mix phx.new # Creates a new Phoenix v1.5.7 application
mix phx.new.ecto # Creates a new Ecto project within an umbrella project
mix phx.new.web # Creates a new Phoenix web project within an umbrella project
mix phx.routes # Prints all routes
mix phx.server # Starts applications and their servers
- general ecto tasks
mix help --search 'ecto' master
mix ecto # Prints Ecto help information
mix ecto.create # Creates the repository storage
mix ecto.drop # Drops the repository storage
mix ecto.dump # Dumps the repository database structure
mix ecto.gen.migration # Generates a new migration for the repo
mix ecto.gen.repo # Generates a new repository
mix ecto.load # Loads previously dumped database structure
mix ecto.migrate # Runs the repository migrations
mix ecto.migrations # Displays the repository migration status
mix ecto.reset # Alias defined in mix.exs
mix ecto.rollback # Rolls back the repository migrations
mix ecto.setup # Alias defined in mix.exs
mix phx.new.ecto # Creates a new Ecto project within an umbrella project
- deployment guides
- Official website: https://www.phoenixframework.org/
- Guides: https://hexdocs.pm/phoenix/overview.html
- Docs: https://hexdocs.pm/phoenix
- Forum: https://elixirforum.com/c/phoenix-forum
- Source: https://github.com/phoenixframework/phoenix
- https://devhints.io/phoenix-migrations
- sudo -u postgres psql
- ALTER USER postgres PASSWORD 'newpassword';
- if an object belongs to another object, you can't use that other object's id directly, ie messages belongs_to User cant directly use user_id in the schema?