add links

lib/zoeyscomputer/links.ex

@@ -0,0 +1,107 @@
+defmodule Zoeyscomputer.Links do
+  @moduledoc """
+  The Links context.
+  """
+
+  import Ecto.Query, warn: false
+  alias Zoeyscomputer.Repo
+
+  alias Zoeyscomputer.Links.Link
+
+  @doc """
+  Returns the list of links.
+
+  ## Examples
+
+      iex> list_links()
+      [%Link{}, ...]
+
+  """
+  def list_links(user_id) do
+    Repo.all(
+      from l in Link,
+        where: l.user_id == ^user_id
+    )
+  end
+
+  @doc """
+  Gets a single link.
+
+  Raises `Ecto.NoResultsError` if the Link does not exist.
+
+  ## Examples
+
+      iex> get_link!(123)
+      %Link{}
+
+      iex> get_link!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_link!(id), do: Repo.get!(Link, id)
+
+  @doc """
+  Creates a link.
+
+  ## Examples
+
+      iex> create_link(%{field: value})
+      {:ok, %Link{}}
+
+      iex> create_link(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_link(attrs \\ %{}) do
+    %Link{}
+    |> Link.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a link.
+
+  ## Examples
+
+      iex> update_link(link, %{field: new_value})
+      {:ok, %Link{}}
+
+      iex> update_link(link, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_link(%Link{} = link, attrs) do
+    link
+    |> Link.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a link.
+
+  ## Examples
+
+      iex> delete_link(link)
+      {:ok, %Link{}}
+
+      iex> delete_link(link)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_link(%Link{} = link) do
+    Repo.delete(link)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking link changes.
+
+  ## Examples
+
+      iex> change_link(link)
+      %Ecto.Changeset{data: %Link{}}
+
+  """
+  def change_link(%Link{} = link, attrs \\ %{}) do
+    Link.changeset(link, attrs)
+  end
+end