105 lines
1.6 KiB
Elixir
105 lines
1.6 KiB
Elixir
defmodule TempleDemo.Blog do
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@moduledoc """
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The Blog context.
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"""
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import Ecto.Query, warn: false
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alias TempleDemo.Repo
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alias TempleDemo.Blog.Post
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@doc """
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Returns the list of posts.
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## Examples
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iex> list_posts()
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[%Post{}, ...]
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"""
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def list_posts do
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Repo.all(Post)
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end
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@doc """
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Gets a single post.
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Raises `Ecto.NoResultsError` if the Post does not exist.
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## Examples
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iex> get_post!(123)
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%Post{}
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iex> get_post!(456)
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** (Ecto.NoResultsError)
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"""
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def get_post!(id), do: Repo.get!(Post, id)
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@doc """
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Creates a post.
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## Examples
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iex> create_post(%{field: value})
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{:ok, %Post{}}
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iex> create_post(%{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def create_post(attrs \\ %{}) do
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%Post{}
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|> Post.changeset(attrs)
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|> Repo.insert()
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end
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@doc """
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Updates a post.
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## Examples
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iex> update_post(post, %{field: new_value})
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{:ok, %Post{}}
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iex> update_post(post, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def update_post(%Post{} = post, attrs) do
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post
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|> Post.changeset(attrs)
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|> Repo.update()
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end
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@doc """
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Deletes a post.
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## Examples
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iex> delete_post(post)
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{:ok, %Post{}}
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iex> delete_post(post)
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{:error, %Ecto.Changeset{}}
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"""
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def delete_post(%Post{} = post) do
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Repo.delete(post)
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for tracking post changes.
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## Examples
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iex> change_post(post)
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%Ecto.Changeset{data: %Post{}}
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"""
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def change_post(%Post{} = post, attrs \\ %{}) do
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Post.changeset(post, attrs)
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end
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end
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