Scrivener.Html

Helpers built to work with Scrivener's page struct to easily build HTML output for various CSS frameworks.

Setup

Add to mix.exs

  # add :scrivener_html to deps
  defp deps do
    [
      # ...
      {:scrivener_html, "~> 1.8"}
      # ...
    ]
  end

  # add :scrivener_html to applications list
  defp application do
    [
      # ...
      applications: [ ..., :scrivener_html, ... ]
      # ...
    ]
  end

For use with Phoenix.HTML, configure the :routes_helper module in config/config.exs like the following:

config :scrivener_html,
  routes_helper: MyApp.Router.Helpers,
  # If you use a single view style everywhere, you can configure it here. See View Styles below for more info.
  view_style: :bootstrap

Import to your view.

defmodule MyApp.UserView do
  use MyApp.Web, :view
  import Scrivener.HTML
end

Example Usage

Use in your template.

<%= for user <- @page do %>
   ...
<% end %>

<%= pagination_links @page %>

Where @page is a %Scrivener.Page{} struct returned from Repo.paginate/2. So the function in your controller is like:

#  params = %{"page" => _page}
def index(conn, params) do
  page = MyApp.User
          # Other query conditions can be done here
          |> MyApp.Repo.paginate(params)
  render conn, "index.html", page: page
end

Scopes and URL Parameters

If your resource has any url parameters to be supplied, you should provide them as the 3rd parameter. For example, given a scope like:

scope "/:locale", App do
  pipe_through [:browser]

  get "/page", PageController, :index, as: :pages
  get "/pages/:id", PageController, :show, as: :page
end

You would need to pass in the :locale parameter and :path option like so:

(this would generate links like "/en/page?page=1")

<%= pagination_links @conn, @page, ["en"], path: &pages_path/4 %>

With a nested resource, simply add it to the list:

(this would generate links like "/en/pages/1?page=1")

<%= pagination_links @conn, @page, ["en", @page_id], path: &page_path/4, action: :show %>

Query String Parameters

Any additional query string parameters can be passed in as well.

<%= pagination_links @conn, @page, ["en"], some_parameter: "data" %>
# Or if there are no URL parameters
<%= pagination_links @conn, @page, some_parameter: "data" %>

Custom Actions

If you need to hit a different action other than :index, simply pass the action name to use in the url helper.

<%= pagination_links @conn, @page, action: :show %>

Customizing Output

Below are the defaults which are used without passing in any options.

<%= pagination_links @conn, @page, [], distance: 5, next: ">>", previous: "<<", first: true, last: true, view_style: :bootstrap %>
# Which is the same as
<%= pagination_links @conn, @page %>

To prevent HTML escaping (i.e. seeing things like < on the page), simply use Phoenix.HTML.raw/1 for any & strings passed in, like so:

<%= pagination_links @conn, @page, previous: Phoenix.HTML.raw("&leftarrow;"), next: Phoenix.HTML.raw("&rightarrow;") %>

To show icons instead of text, simply render custom html templates, like:

(this example uses materialize icons)

# Using Phoenix.HTML's sigil_E for EEx
<%= pagination_links @conn, @page, previous: ~E(<i class="material-icons">chevron_left</i>), next: ~E(<i class="material-icons">chevron_right</i>) %>
# Or by calling render
<%= pagination_links @conn, @page, previous: render("pagination.html", direction: :prev), next: render("pagination.html", direction: :next)) %>

The same can be done for first/last links as well (v1.7.0 or higher).

(this example uses materialize icons)

<%= pagination_links @conn, @page, first: ~E(<i class="material-icons">chevron_left</i>), last: ~E(<i class="material-icons">chevron_right</i>) %>

View Styles

There are six view styles currently supported:

:bootstrap (the default) This styles the pagination links in a manner that is expected by Bootstrap 3.x.
:bootstrap_v4 This styles the pagination links in a manner that is expected by Bootstrap 4.x.
:foundation This styles the pagination links in a manner that is expected by Foundation for Sites 6.x.
:semantic This styles the pagination links in a manner that is expected by Semantic UI 2.x.
:materialize This styles the pagination links in a manner that is expected by Materialize css 0.x.
:bulma This styles the pagination links in a manner that is expected by Bulma 0.4.x, using the is-centered as a default.

Extending

For custom HTML output, see Scrivener.HTML.raw_pagination_links/2.

See Scrivener.HTML.raw_pagination_links/2 for option descriptions.

Scrivener.HTML can be included in your view and then just used with a simple call to pagination_links/1.

iex> Scrivener.HTML.pagination_links(%Scrivener.Page{total_pages: 10, page_number: 5}) |> Phoenix.HTML.safe_to_string()
"<nav>
  <ul class=\"pagination\">
    <li class=\"\"><a class=\"\" href=\"?page=4\">&lt;&lt;</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=1\">1</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=2\">2</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=3\">3</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=4\">4</a></li>
    <li class=\"active\"><a class=\"\" href=\"?page=5\">5</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=6\">6</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=7\">7</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=8\">8</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=9\">9</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=10\">10</a></li>
    <li class=\"\"><a class=\"\" href=\"?page=6\">&gt;&gt;</a></li>
  </ul>
</nav>"

SEO

SEO attributes like rel are automatically added to pagination links. In addition, a helper for header <link> tags is available (v1.7.0 and higher) to be placed in the <head> tag.

See Scrivener.HTML.SEO documentation for more information.

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