The function make_uri service get_params returns the URL of the service service applied to the GET parameters get_params. By default the returned URL is relative to the current request URL but it is absolute when one of the following conditions is met:

• the optional parameter ~absolute_path is true.
• the optional parameter ~absolute is true.
• the optional parameter ~https is true (resp. false) and the current request protocol is http (resp. https).
• the optional parameter ~https is true and the function is used outside of a service handler
• the service has been created with ~https:true and the current request protocol is http.
• the service has been created with ~https:true and the function is used outside of a service handler.

When only the first condition is met (~absolute_path is true) the returned URL is just the absolute path, but when any other condition is satisfied the returned URL is prefixed with protocol://hostname[:port], where:

• protocol is:

  • https if the service has been created with ~https:true or the optional parameter ~https is true;
  • http if the optional parameter ~https is false;
  • the current request protocol if available;
  • http in any other case.

• hostname is:

  • the optional parameter ~hostname if given;
  • the attribute defaulthostname of <host> tag in configuration file or the machine hostname if the option <usedefaulthostname/> is set;
  • the Host http header of the current request if available;
  • the attribute defaulthostname of <host> tag in configuration file or the machine hostname in any other case.

• port is:

  • the optional parameter ~port if given;
  • the attribute defaulthttpsport (resp. defaulthttpport) of <host> tag in configuration file or 443 (resp. 80) if protocol is https (resp. http) and the current request protocol is http (resp. https);
  • the attribute defaulthttpsport (resp. defaulthttpsport) of <host> tag in configuration file or 443 (resp. 80) if the option <usedefaulthostname/> is set and protocol is https (resp. http);
  • the port associated to the Host http header of the current request if available;
  • the incoming port of the current request if available;
  • the attribute defaulthttpport (resp. defaulthttpsport) of <host> tag in configuration file or 80 (resp. 443) in any other case.

If given the optional parameter ~fragment is prefixed by # and appended to the URL.

The optional parameter keep_nl_params allows one to override the keep_nl_params parameter used when creating the service, see Eliom_service.create for a detailed description.

The optional parameter nl_params allows one to add non localized GET parameter to the URL. See the eliom manual for more information about <<a_manual chapter="server-params" fragment="nonlocalizedparameters"|non localized parameters>>.

The function uri_of_string f returns a URI whose content is equivalent to f ().

For XML tree build with TyXML, like Html or Svg.F, the function f is applied each time the XML tree is sent to the client (either as page content or as a marshalled OCaml value). Hence, the function is always evaluated in the context of a service handler.

For other module, the function f is immediately applied.

The function css_link ~uri () creates a <link> node that reference a Cascading StyleSheet (CSS).

If the CSS is generated by an Eliom service, use make_uri to calculate the service URI. If the CSS is a static file, you may also use Eliom_service.static_dir or Eliom_service.extern to abstract the file with a service.

The optional parameter ~a allows one to add extra HTML attributes to the generated node.

The function js_script ~uri () creates a <script> node that reference a javascript file.

If the script content is generated by an Eliom service, use make_uri to calculate the service URI. If it is a static file, you may also use Eliom_service.static_dir or Eliom_service.extern to abstract the file with a service.

The optional parameter ~a allows one to add extra HTML attributes to the generated node.

The function a service a_content get_params creates a <a> node that link to service applied to GET parameters get_params and whose content is a_content. By default, the href attribute is a relative URL recomputed at each request with make_uri.

By default, the link is implemented in a way that allows the client-side Eliom application to keep running, irrespectable of the usage of the link (cf. <<a_api project="eliom" subproject="client" | val Eliom_client.change_page>> ).

By contrast, if the optional parameter ~xhr:false is given, the link is realized as a standard HTML link and clicking it discontinues the Eliom application. The ~xhr parameter has no effect outside an Eliom application. The default value of ~xhr is configurable through <<a_api project="eliom" subproject="server" | val Eliom_config.set_default_links_xhr >> .

The optional parameter ~a allows one to add extra HTML attributes to the generated node.

See make_uri for description of other optional parameters.

To create a <a> node that is not associated to a service, use Raw.a.