Package ratpack.core.form

Interface Form

All Superinterfaces:

Map<String,String>, MultiValueMap<String,String>

public interface Form
extends MultiValueMap<String,String>

An uploaded form.

The form is modelled as a MultiValueMap, with extra methods for dealing with file uploads. That is, uploaded files are not visible via the methods provided by MultiValueMap.

All instances of this type are immutable. Calling any mutative method of MultiValueMap will result in an UnsupportedOperationException.

Example usage:

 import ratpack.core.handling.Handler;
 import ratpack.core.handling.Context;
 import ratpack.core.form.Form;
 import ratpack.core.form.UploadedFile;

 import java.util.List;

 public class Example {
   public static class FormHandler implements Handler {
     public void handle(Context context) throws Exception {
       context.parse(Form.class).then(form -> {
         UploadedFile file = form.file("someFile.txt");
         String param = form.get("param");
         List<String> multi = form.getAll("multi");
         context.render("form uploaded!");
       });
     }
   }
 }
 

To include the query parameters from the request in the parsed form, use form(boolean). This can be useful if you want to support both GET and PUT submission with a single handler.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Method Summary

Modifier and Type	Method	Description
UploadedFile	file(String name)	Return the first uploaded file with the given name.
MultiValueMap<String,UploadedFile>	files()	Returns all of the uploaded files.
List<UploadedFile>	files(String name)	Return all of the uploaded files with the given name.
static Parse<Form,FormParseOpts>	form()	Creates a parseable object to parse a request body into a Form.
static Parse<Form,FormParseOpts>	form(boolean includeQueryParams)	Creates a parseable object to parse a request body into a Form.

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, getOrDefault, hashCode, isEmpty, keySet, merge, putIfAbsent, remove, replace, replace, replaceAll, size, values

Methods inherited from interface ratpack.func.MultiValueMap

asMultimap, clear, get, getAll, getAll, put, putAll, remove

Method Detail

file

@Nullable
UploadedFile file(String name)

Return the first uploaded file with the given name.

Parameters:

name - The name of the uploaded file in the form

Returns:

The uploaded file, or null if no file was uploaded by that name

files

List<UploadedFile> files(String name)

Return all of the uploaded files with the given name.

Parameters:

name - The name of the uploaded files in the form

Returns:

The uploaded files, or an empty list if no files were uploaded by that name

files

MultiValueMap<String,UploadedFile> files()

Returns all of the uploaded files.

Returns:

all of the uploaded files.

form

static Parse<Form,FormParseOpts> form()

Creates a parseable object to parse a request body into a Form.

Default options will be used (no query parameters included).

Returns:

a parse object

form

static Parse<Form,FormParseOpts> form(boolean includeQueryParams)

Creates a parseable object to parse a request body into a Form.

Parameters:

includeQueryParams - whether to include the query parameters from the request in the parsed form

Returns:

a parse object