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add base resources for podcast context
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defmodule Radiator.Podcast do | ||
@moduledoc """ | ||
The Podcasts context. | ||
Handles repo operations for networks, shows and episodes. | ||
""" | ||
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import Ecto.Query, warn: false | ||
alias Radiator.Repo | ||
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alias Radiator.Podcast.{Episode, Network, Show} | ||
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@doc """ | ||
Returns the list of networks. | ||
## Examples | ||
iex> list_networks() | ||
[%Network{}, ...] | ||
""" | ||
def list_networks do | ||
Repo.all(Network) | ||
end | ||
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@doc """ | ||
Gets a single network. | ||
Raises `Ecto.NoResultsError` if the Network does not exist. | ||
## Examples | ||
iex> get_network!(123) | ||
%Network{} | ||
iex> get_network!(456) | ||
** (Ecto.NoResultsError) | ||
""" | ||
def get_network!(id), do: Repo.get!(Network, id) | ||
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@doc """ | ||
Creates a network. | ||
## Examples | ||
iex> create_network(%{field: value}) | ||
{:ok, %Network{}} | ||
iex> create_network(%{field: bad_value}) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def create_network(attrs \\ %{}) do | ||
%Network{} | ||
|> Network.changeset(attrs) | ||
|> Repo.insert() | ||
end | ||
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@doc """ | ||
Updates a network. | ||
## Examples | ||
iex> update_network(network, %{field: new_value}) | ||
{:ok, %Network{}} | ||
iex> update_network(network, %{field: bad_value}) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def update_network(%Network{} = network, attrs) do | ||
network | ||
|> Network.changeset(attrs) | ||
|> Repo.update() | ||
end | ||
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@doc """ | ||
Deletes a network. | ||
## Examples | ||
iex> delete_network(network) | ||
{:ok, %Network{}} | ||
iex> delete_network(network) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def delete_network(%Network{} = network) do | ||
Repo.delete(network) | ||
end | ||
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@doc """ | ||
Returns an `%Ecto.Changeset{}` for tracking network changes. | ||
## Examples | ||
iex> change_network(network) | ||
%Ecto.Changeset{data: %Network{}} | ||
""" | ||
def change_network(%Network{} = network, attrs \\ %{}) do | ||
Network.changeset(network, attrs) | ||
end | ||
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@doc """ | ||
Returns the list of shows. | ||
## Examples | ||
iex> list_shows() | ||
[%Show{}, ...] | ||
""" | ||
def list_shows do | ||
Repo.all(Show) | ||
end | ||
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@doc """ | ||
Gets a single show. | ||
Raises `Ecto.NoResultsError` if the Show does not exist. | ||
## Examples | ||
iex> get_show!(123) | ||
%Show{} | ||
iex> get_show!(456) | ||
** (Ecto.NoResultsError) | ||
""" | ||
def get_show!(id), do: Repo.get!(Show, id) | ||
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@doc """ | ||
Creates a show. | ||
## Examples | ||
iex> create_show(%{field: value}) | ||
{:ok, %Show{}} | ||
iex> create_show(%{field: bad_value}) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def create_show(attrs \\ %{}) do | ||
%Show{} | ||
|> Show.changeset(attrs) | ||
|> Repo.insert() | ||
end | ||
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@doc """ | ||
Updates a show. | ||
## Examples | ||
iex> update_show(show, %{field: new_value}) | ||
{:ok, %Show{}} | ||
iex> update_show(show, %{field: bad_value}) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def update_show(%Show{} = show, attrs) do | ||
show | ||
|> Show.changeset(attrs) | ||
|> Repo.update() | ||
end | ||
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@doc """ | ||
Deletes a show. | ||
## Examples | ||
iex> delete_show(show) | ||
{:ok, %Show{}} | ||
iex> delete_show(show) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def delete_show(%Show{} = show) do | ||
Repo.delete(show) | ||
end | ||
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@doc """ | ||
Returns an `%Ecto.Changeset{}` for tracking show changes. | ||
## Examples | ||
iex> change_show(show) | ||
%Ecto.Changeset{data: %Show{}} | ||
""" | ||
def change_show(%Show{} = show, attrs \\ %{}) do | ||
Show.changeset(show, attrs) | ||
end | ||
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@doc """ | ||
Returns the list of episodes. | ||
## Examples | ||
iex> list_episodes() | ||
[%Episode{}, ...] | ||
""" | ||
def list_episodes do | ||
Repo.all(Episode) | ||
end | ||
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@doc """ | ||
Gets a single episode. | ||
Raises `Ecto.NoResultsError` if the Episode does not exist. | ||
## Examples | ||
iex> get_episode!(123) | ||
%Episode{} | ||
iex> get_episode!(456) | ||
** (Ecto.NoResultsError) | ||
""" | ||
def get_episode!(id), do: Repo.get!(Episode, id) | ||
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@doc """ | ||
Creates a episode. | ||
## Examples | ||
iex> create_episode(%{field: value}) | ||
{:ok, %Episode{}} | ||
iex> create_episode(%{field: bad_value}) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def create_episode(attrs \\ %{}) do | ||
%Episode{} | ||
|> Episode.changeset(attrs) | ||
|> Repo.insert() | ||
end | ||
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@doc """ | ||
Updates a episode. | ||
## Examples | ||
iex> update_episode(episode, %{field: new_value}) | ||
{:ok, %Episode{}} | ||
iex> update_episode(episode, %{field: bad_value}) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def update_episode(%Episode{} = episode, attrs) do | ||
episode | ||
|> Episode.changeset(attrs) | ||
|> Repo.update() | ||
end | ||
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@doc """ | ||
Deletes a episode. | ||
## Examples | ||
iex> delete_episode(episode) | ||
{:ok, %Episode{}} | ||
iex> delete_episode(episode) | ||
{:error, %Ecto.Changeset{}} | ||
""" | ||
def delete_episode(%Episode{} = episode) do | ||
Repo.delete(episode) | ||
end | ||
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@doc """ | ||
Returns an `%Ecto.Changeset{}` for tracking episode changes. | ||
## Examples | ||
iex> change_episode(episode) | ||
%Ecto.Changeset{data: %Episode{}} | ||
""" | ||
def change_episode(%Episode{} = episode, attrs \\ %{}) do | ||
Episode.changeset(episode, attrs) | ||
end | ||
end |
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defmodule Radiator.Podcast.Episode do | ||
@moduledoc """ | ||
Represents the Episode model. | ||
TODO: Episodes should be numbered and ordered inside a show. | ||
""" | ||
use Ecto.Schema | ||
import Ecto.Changeset | ||
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alias Radiator.Podcast.Show | ||
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schema "episodes" do | ||
field :title, :string | ||
belongs_to :show, Show | ||
timestamps(type: :utc_datetime) | ||
end | ||
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@doc false | ||
def changeset(episode, attrs) do | ||
episode | ||
|> cast(attrs, [:title, :show_id]) | ||
|> validate_required([:title, :show_id]) | ||
end | ||
end |
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defmodule Radiator.Podcast.Network do | ||
@moduledoc """ | ||
Represents the network model. | ||
A network can host many shows. | ||
""" | ||
use Ecto.Schema | ||
import Ecto.Changeset | ||
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alias Radiator.Podcast.Show | ||
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schema "networks" do | ||
field :title, :string | ||
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has_many(:shows, Show) | ||
timestamps(type: :utc_datetime) | ||
end | ||
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@doc false | ||
def changeset(network, attrs) do | ||
network | ||
|> cast(attrs, [:title]) | ||
|> validate_required([:title]) | ||
end | ||
end |
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defmodule Radiator.Podcast.Show do | ||
@moduledoc """ | ||
Represents the show model. | ||
A show can have many episodes. | ||
""" | ||
use Ecto.Schema | ||
import Ecto.Changeset | ||
alias Radiator.Podcast.{Episode, Network} | ||
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schema "shows" do | ||
field :title, :string | ||
belongs_to :network, Network | ||
has_many(:episodes, Episode) | ||
timestamps(type: :utc_datetime) | ||
end | ||
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@doc false | ||
def changeset(show, attrs) do | ||
show | ||
|> cast(attrs, [:title, :network_id]) | ||
|> validate_required([:title]) | ||
end | ||
end |
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defmodule Radiator.Repo.Migrations.CreateNetworks do | ||
use Ecto.Migration | ||
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def change do | ||
create table(:networks) do | ||
add :title, :string | ||
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timestamps(type: :utc_datetime) | ||
end | ||
end | ||
end |
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defmodule Radiator.Repo.Migrations.CreateShows do | ||
use Ecto.Migration | ||
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def change do | ||
create table(:shows) do | ||
add :title, :string | ||
add :network_id, references(:networks, on_delete: :nothing) | ||
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timestamps(type: :utc_datetime) | ||
end | ||
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create index(:shows, [:network_id]) | ||
end | ||
end |
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