** (Mix) Expected the context, "x", to be a valid module name

sf8193 · May 4, 2019, 10:01pm

Hello!

Having trouble running the phx.gen.html templates. This is the command I’m trying

mix phx.gen.html Shipments shipmentroutes shipmentroute address:string date:string groups_involved:string

with an error message of this

** (Mix) Expected the schema, "shipmentroutes", to be a valid module name

mix phx.gen.html, phx.gen.json and phx.gen.context expect a
context module name, followed by singular and plural names of
the generated resource, ending with any number of attributes.
For example:

    mix phx.gen.html Accounts User users name:string
    mix phx.gen.json Accounts User users name:string
    mix phx.gen.context Accounts User users name:string

The context serves as the API boundary for the given resource.
Multiple resources may belong to a context and a resource may be
split over distinct contexts (such as Accounts.User and Payments.User).

It doesn’t give any reasoning for why it isn’t a valid module name, so I have no idea how to fix this

al2o3cr · May 4, 2019, 10:32pm

The validation check that triggers that message is here:

github.com

phoenixframework/phoenix/blob/3313bf45a31c34d0455be2400aa2a11461f4228e/lib/mix/phoenix/schema.ex#L59


  :naive_datetime_usec,
  :utc_datetime,
  :utc_datetime_usec,
  :uuid,
  :binary
]


def valid_types, do: @valid_types


def valid?(schema) do
  schema =~ ~r/^[A-Z]\w*(\.[A-Z]\w*)*$/
end


def new(schema_name, schema_plural, cli_attrs, opts) do
  ctx_app   = opts[:context_app] || Mix.Phoenix.context_app()
  otp_app   = Mix.Phoenix.otp_app()
  opts      = Keyword.merge(Application.get_env(otp_app, :generators, []), opts)
  base      = Mix.Phoenix.context_base(ctx_app)
  basename  = Phoenix.Naming.underscore(schema_name)
  module    = Module.concat([base, schema_name])
  repo      = opts[:repo] || Module.concat([base, "Repo"])

It’s expecting a singular name that starts with a leading A-Z.

sf8193 · May 4, 2019, 10:35pm

Interesting, I ended up changing the name to make it work but still don’t understand why mine wouldn’t work. It does start with the alphabet and it is a singular name no?

benwilson512 · May 4, 2019, 11:26pm

A-Z means a capital letter not just any letter in the alphabet. Elixir module names must always start with a capital letter (unless explicitly prefixing with :)

sf8193 · May 4, 2019, 11:37pm

oh god duh-- thanks