wiki/lib/wiki/content.ex

142 lines
2.6 KiB
Elixir

defmodule Wiki.Content do
@moduledoc """
The Content context.
"""
import Ecto.Query, warn: false
alias Wiki.Repo
alias Wiki.Content.Page
alias Wiki.Content.Upload
@doc """
Returns the list of pages.
## Examples
iex> list_pages()
[%Page{}, ...]
"""
def list_pages(user) do
Repo.all(from p in Page, where: p.user_id == ^user.id)
end
@doc """
Gets a single page.
Raises `Ecto.NoResultsError` if the Page does not exist.
## Examples
iex> get_page!(123)
%Page{}
iex> get_page!(456)
** (Ecto.NoResultsError)
"""
def get_page!(id), do: Repo.get!(Page, id)
def get_page(id), do: Repo.get(Page, id)
@doc """
Creates a page.
## Examples
iex> create_page(%{field: value})
{:ok, %Page{}}
iex> create_page(%{field: bad_value})
{:error, %Ecto.Changeset{}}
"""
def create_page(attrs \\ %{}) do
%Page{}
|> Page.changeset(attrs)
|> Repo.insert()
|> case do
{:ok, page} ->
content = Map.get(attrs, "content") || Map.get(attrs, :content)
unless is_nil(content) do
Page.update_page_links(%Page{page | content: content})
end
{:ok, page}
{:error, reason} ->
{:error, reason}
end
end
@doc """
Updates a page.
## Examples
iex> update_page(page, %{field: new_value})
{:ok, %Page{}}
iex> update_page(page, %{field: bad_value})
{:error, %Ecto.Changeset{}}
"""
def update_page(%Page{} = page, attrs) do
page
|> Page.changeset(attrs)
|> Repo.update()
|> case do
{:ok, page} ->
content = Map.get(attrs, "content") || Map.get(attrs, :content)
unless is_nil(content) do
Page.update_page_links(%Page{page | content: content})
end
{:ok, page}
{:error, reason} ->
{:error, reason}
end
end
@doc """
Deletes a page.
## Examples
iex> delete_page(page)
{:ok, %Page{}}
iex> delete_page(page)
{:error, %Ecto.Changeset{}}
"""
def delete_page(%Page{} = page) do
Repo.delete(page)
end
@doc """
Returns an `%Ecto.Changeset{}` for tracking page changes.
## Examples
iex> change_page(page)
%Ecto.Changeset{data: %Page{}}
"""
def change_page(%Page{} = page, attrs \\ %{}, options \\ []) do
Page.changeset(page, attrs, options)
end
def get_upload(%Page{id: page_id}, id) do
get_upload(page_id, id)
end
def get_upload(page_id, upload_id) do
Repo.one(from u in Upload, where: u.id == ^upload_id and u.page_id == ^page_id)
end
end