Phoenix v1.3.4 mix phx.gen.html View Source
Generates controller, views, and context for an HTML resource.
mix phx.gen.html Accounts User users name:string age:integer
The first argument is the context module followed by the schema module and its plural name (used as the schema table name).
The context is an Elixir module that serves as an API boundary for the given resource. A context often holds many related resources. Therefore, if the context already exists, it will be augmented with functions for the given resource. Note a resource may also be split over distinct contexts (such as Accounts.User and Payments.User).
The schema is responsible for mapping the database fields into an Elixir struct.
Overall, this generator will add the following files to
- a context module in lib/app/accounts/accounts.ex for the accounts API
- a schema in lib/app/accounts/user.ex, with an
- a view in lib/app_web/views/user_view.ex
- a controller in lib/app_web/controllers/user_controller.ex
- default CRUD templates in lib/app_web/templates/user
A migration file for the repository and test files for the context and controller features will also be generated.
The location of the web files (controllers, views, templates, etc) in an
umbrella application will vary based on the
:context_app config located
in your applications
:generators configuration. When set, the Phoenix
generators will generate web files directly in your lib and test folders
since the application is assumed to be isolated to web specific functionality.
:context_app is not set, the generators will place web related lib
and test files in a
web/ directory since the application is assumed
to be handling both web and domain specific functionality.
config :my_app_web, :generators, context_app: :my_app
--context-app option may be supplied to the generator:
mix phx.gen.html Sales User users --context-app warehouse
By default, the controller and view will be namespaced by the schema name.
You can customize the web module namespace by passing the
--web flag with a
module name, for example:
mix phx.gen.html Sales User users --web Sales
Which would geneate a
In some cases, you may wish to boostrap HTML templates, controllers, and
controller tests, but leave internal implementation of the context or schema
to yourself. You can use the
--no-schema flags for
file generation control.
By default, the table name for the migration and schema will be
the plural name provided for the resource. To customize this value,
--table option may be provided. For example:
mix phx.gen.html Accounts User users --table cms_users
Generated migration can use
binary_id for schema’s primary key
and its references with option
This generator uses default options provided in the
configuration of your application. These are the defaults:
config :your_app, :generators, migration: true, binary_id: false, sample_binary_id: "11111111-1111-1111-1111-111111111111"
You can override those options per invocation by providing corresponding
--no-binary-id to use normal ids despite the default
--migration to force generation of the migration.
Read the documentation for
phx.gen.schema for more information on