HTTP::Promise::Headers::ContentDisposition - Content-Disposition Header Field


    use HTTP::Promise::Headers::ContentDisposition;
    my $cd = HTTP::Promise::Headers::ContentDisposition->new || 
        die( HTTP::Promise::Headers::ContentDisposition->error, "\n" );
    my $dispo = $cd->disposition;
    # For example, attachment
    $cd->disposition( 'inline' );
    $cd->filename( 'some-file.txt' );
    $cd->disposition( 'form-data' );
    $cd->name( 'someField' );
    my $name = $cd->name;
    # Same thing
    my $name = $cd->param( 'name' );
    $cd->params( name => 'someField', filename => 'some-file.txt' );




The following description is taken from Mozilla documentation.

    Content-Disposition: inline
    Content-Disposition: attachment
    Content-Disposition: attachment; filename="filename.jpg"
    Content-Disposition: form-data; name="fieldName"
    Content-Disposition: form-data; name="fieldName"; filename="filename.jpg"



Returns a string representation of the Content-Disposition object.


Sets or gets the type of Content-Disposition this is. For example: attachment, form-data


Is followed by a string containing the name of the HTML field in the form that the content of this subpart refers to. When dealing with multiple files in the same field (for example, the multiple attribute of an <input type="file"> element), there can be several subparts with the same name.

A name with a value of '_charset_' indicates that the part is not an HTML field, but the default charset to use for parts without explicit charset information.


Without any argument, this returns the string containing the original name of the file transmitted. The filename is always optional and must not be used blindly by the application: path information should be stripped, and conversion to the server file system rules should be done. This parameter provides mostly indicative information. When used in combination with Content-Disposition: attachment, it is used as the default filename for an eventual "Save As" dialog presented to the user.

If the property filename* is set instead, then it will be decoded and used instead, and the value for "filename_charset" and "filename_lang" will be set.

When setting the filename value, this takes an optional language iso 639 code (see rfc5987 and rfc2231). If the filename contains non ascii characters, it will be automatically encoded according to rfc5987. and the property filename* set instead. That property, by rfc standard, takes precedence over the filename one.

The language provided, if any, will be used then.

For example:

    $h->disposition( 'form-data' );
    $h->name( 'fileField' );
    $h->filename( q{file.txt} );
    say "$h";
    # form-data; name="fileField"; filename="file.txt"

    $h->disposition( 'form-data' );
    $h->name( 'fileField' );
    $h->filename( q{ファイル.txt} );
    say "$h";
    # form-data; name="fileField"; filename*="UTF-8''%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB.txt"
    $h->disposition( 'form-data' );
    $h->name( 'fileField' );
    $h->filename( q{ファイル.txt}, 'ja-JP' );
    say "$h";
    # form-data; name="fileField"; filename*="UTF-8'ja-JP'%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB.txt"

    # Using default value
    $h->filename_lang( 'ja-JP' );
    $h->disposition( 'form-data' );
    $h->name( 'fileField' );
    $h->filename( q{ファイル.txt} );
    say "$h";
    # form-data; name="fileField"; filename*="UTF-8'ja-JP'%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB.txt"

    $headers->header( Content_Disposition => "$h" );

The Content-Disposition header value would then contain a property filename* (with the trailing wildcard).

See also "decode_filename" in HTTP::Promise::Headers and "encode_filename" in HTTP::Promise::Headers which are used to decode and encode filenames.


Sets or gets the encoded filename charset.

This is used when the filename contains non-ascii characters, such as Japanese, Korean, or Cyrillic. Although theoretically one can set any character set, by design this only accepts UTF-8 (case insensitive).

This is set automatically when calling "filename". You actually need to call "filename" first to have a value set.

Returns a scalar object containing the filename charset.


Sets or gets the encoded filename language. This takes an iso 639 language code (see rfc1766).

This is set automatically when calling "filename". You actually need to call "filename" first to have a value set.

Returns a scalar object containing the filename language.


Sets or gets an arbitrary Content-Disposition property.

Note that if you use this, you bypass other specialised method who do some additional processing, so be mindful.


Sets or gets multiple arbitrary Content-Disposition properties at once.

If called without any arguments, this returns the hash object used to store the Content-Disposition properties.


Jacques Deguest <>


See rfc6266, section 4, rfc7578, section 4.2 and Mozilla documentation

HTTP::Promise, HTTP::Promise::Request, HTTP::Promise::Response, HTTP::Promise::Message, HTTP::Promise::Entity, HTTP::Promise::Headers, HTTP::Promise::Body, HTTP::Promise::Body::Form, HTTP::Promise::Body::Form::Data, HTTP::Promise::Body::Form::Field, HTTP::Promise::Status, HTTP::Promise::MIME, HTTP::Promise::Parser, HTTP::Promise::IO, HTTP::Promise::Stream, HTTP::Promise::Exception


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