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Merged
zorbash merged 1 commit into from
Jul 30, 2025
Merged

Support multiple apps in Plug.SwaggerUI #676

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40 changes: 35 additions & 5 deletions lib/open_api_spex/plug/swagger_ui.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,19 @@ defmodule OpenApiSpex.Plug.SwaggerUI do
swagger_ui_js_standalone_preset_url: "https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/4.14.0/swagger-ui-standalone-preset.js",
swagger_ui_css_url: "https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/4.14.0/swagger-ui.css"
end

# Multiple paths
scope "/" do
pipe_through :browser # Use the default browser stack

get "/", MyAppWeb.PageController, :index
get "/swaggerui", OpenApiSpex.Plug.SwaggerUI,
paths: [
latest: "/api/openapi",
legacy: "/legacy_api/openapi",
other_app: "http://localhost:4001/my_other_app/api/openapi"
]
end
"""
@behaviour Plug

Expand Down Expand Up @@ -91,10 +104,8 @@ defmodule OpenApiSpex.Plug.SwaggerUI do
window.onload = function() {
// Begin Swagger UI call region
const api_spec_url = new URL(window.location);
api_spec_url.pathname = "<%= config.path %>";
api_spec_url.hash = "";
const ui = SwaggerUIBundle({
url: api_spec_url.href,

let swaggerConfig = {
dom_id: '#swagger-ui',
deepLinking: true,
presets: [
Expand All @@ -117,7 +128,26 @@ defmodule OpenApiSpex.Plug.SwaggerUI do
<%= for {k, v} <- Map.drop(config, [:path, :oauth, :csp_nonce_assign_key]) do %>
, <%= camelize(k) %>: <%= encode_config(camelize(k), v) %>
<% end %>
})
};

<%= if config[:paths] do %>
let urls = <%=
config[:paths]
|> Enum.map(fn {name, path} -> %{name: name, url: path} end)
|> OpenApiSpex.OpenApi.json_encoder().encode!()
%>
let urlconfig = { urls: urls };

swaggerConfig = { ...swaggerConfig, ...urlconfig};
<% else %>
api_spec_url.pathname = "<%= config.path %>";
api_spec_url.hash = "";
let urlConfig = { url: api_spec_url.href };

swaggerConfig = {...swaggerConfig, ...urlConfig };
<% end %>
const ui = SwaggerUIBundle(swaggerConfig);

// End Swagger UI call region
<%= if config[:oauth] do %>
ui.initOAuth(
Expand Down
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