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MailAttachment

Attachment objects allow referencing files within a Email object. Attachment objects are created using the MAIL New attachment command.

Attachment Object

Attachment objects provide the following read-only properties and functions:

.cid : Text
.disposition : Text
.getContent() : 4D. Blob
.name : Text
.path : Text
.platformPath : Text
.type : Text

MAIL New attachment

Histórico

Versão	Mudanças
v19 R2	Accepts 4D. File, 4D. ZipFile, 4D. Blob

MAIL New attachment( file : 4D. File { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment
MAIL New attachment( zipFile : 4D. ZipFile { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment
MAIL New attachment( blob : 4D. Blob { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment
MAIL New attachment( path : Text { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D.

Parameter	Type		Descrição
file	4D. File	->	Attachment file
zipFile	4D. ZipFile	->	Attachment Zipfile
blob	4D. Blob	->	BLOB containing the attachment
path	Texto	->	Path of the attachment file
name	Texto	->	Name + extension used by the mail client to designate the attachment
cid	Texto	->	ID of attachment (HTML messages only), or " " if no cid is required
type	Texto	->	Value of the content-type header
disposition	Texto	->	Value of the content-disposition header: "inline" or "attachment".
Resultado	4D. MailAttachment	<-	Attachment object

Descrição

MailAttachment.new() cria e retorna um novo objeto do tipo 4D. MailAttachment. Isso é idêntico ao comando MAIL New attachment (atalho).

To define the attachment, you can use:

• a file, pass a 4D. File object containing the attachment file.
• a zipfile, pass a 4D. ZipFile object containing the attachment file.
• a blob, pass a 4D. Blob object containing the attachment itself.
• a path, pass a text value containing the path of the attachment file, expressed with the system syntax. You can pass a full path name or a simple file name (in which case 4D will search for the file in the same directory as the project file).

The optional name parameter lets you pass the name and extension to be used by the mail client to designate the attachment. If name is omitted and:

• you passed a file path, the name and extension of the file is used,
• you passed a BLOB, a random name without extension is automatically generated.

The optional cid parameter lets you pass an internal ID for the attachment. This ID is the value of the Content-Id header, it will be used in HTML messages only. The cid associates the attachment with a reference defined in the message body using an HTML tag such as \<img src="cid:ID">. This means that the contents of the attachment (e.g., a picture) should be displayed within the message on the mail client. The final result may vary depending on the mail client. You can pass an empty string in cid if you do not want to use this parameter.

You can use the optional type parameter to explicitly set the content-type of the attachment file. For example, you can pass a string defining a MIME type ("video/mpeg"). This content-type value will be set for the attachment, regardless of its extension. For more information about MIME types, please refer to the MIME type page on Wikipedia.

By default, if the type parameter is omitted or contains an empty string, the content-type of the attachment file is based on its extension. The following rules are applied for the main MIME types:

Extension	Content Type
jpg, jpeg	image/jpeg
png	image/png
gif	image/gif
pdf	application/pdf
doc	application/msword
xls	application/vnd.ms-excel
ppt	application/vnd.ms-powerpoint
zip	application/zip
gz	application/gzip
json	application/json
js	application/javascript
ps	application/postscript
xml	application/xml
htm, html	text/html
mp3	audio/mpeg
outro	application/octet-stream

The optional disposition parameter lets you pass the content-disposition header of the attachment. You can pass one of the following constants from the "Mail" constant theme:

Constante	Value	Comentário
mail disposition attachment	"attachment"	Set the Content-disposition header value to "attachment", which means that the attachment file must be provided as a link in the message.
mail disposition inline	"inline"	Set the Content-disposition header value to "inline", which means that the attachment must be rendered within the message contents, at the "cid" location. The rendering depends on the mail client.

By default, if the disposition parameter is omitted:

• if the cid parameter is used, the Content-disposition header is set to "inline",
• if the cid parameter is not passed or empty, the Content-disposition header is set to "attachment".

Exemplo 1

You want to send an email with a user-selected file as an attachment and an image embedded in the HTML body:

$doc:=Select document("";"*";"Please select a file to attach";0)
If (OK=1) //If a document was selected C_OBJECT($email;$server;$transporter)

$server:=New object
$server.host:="smtp.mail.com"
$server.user:="test_user@mail.com"
$server.password:="p@ssw@rd"
$transporter:=SMTP New transporter($server)

$email:=New object
$email.from:="test_user@mail.com"
$email.to:="test_user@mail.com"
$email.subject:="This is a test message with attachments"

//add a link to download file
$email.attachments:=New collection(MAIL New attachment(Document))
//insert an inline picture (use a cid)
$email.attachments[1]:=MAIL New attachment("c:\\Pictures\\4D.jpg";"";"4D")

$email.htmlBody:="<html>"+\
"<body>Hello World!"+\
"<img src='cid:4D' >"+\
"</body>"+\
"</head>"+\
"</html>"

$transporter.send($email) //send mail End if

Exemplo 2

You want to send an email with a 4D Write Pro area as an attachment:

C_BLOB($blob)
WP EXPORT VARIABLE(WPArea;$blob;wk docx) C_OBJECT($email;$server;$transporter)

$server:=New object
$server.host:="smtp.mail.com"
$server.user:="user@mail.com"
$server.password:="p@ssw@rd"
$transporter:=SMTP New transporter($server)

$email:=New object
$email.from:="user@mail.com"
$email.to:="customer@mail.com"
$email.subject:="New annual report"
$email.textBody:="Please find enclosed our latest annual report."
$email.attachments:=New collection(MAIL New attachment($blob;"Annual report.docx"))

$transporter.send($email)

4D. MailAttachment.new()

Histórico

Versão	Mudanças
v19 R2	Accepts 4D. File, 4D. ZipFile, 4D. Blob

4D. MailAttachment.new( file : 4D. File { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment.new( zipFile : 4D. ZipFile { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment.new( blob : 4D. Blob { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment.new( path : Text { ; name : Text {; cid : Text{ ; type : Text { ; disposition :Text } } } } ) : 4D. MailAttachment

Parameter	Type		Descrição
file	4D. File	->	Attachment file
zipFile	4D. ZipFile	->	Attachment Zipfile
blob	4D. Blob	->	BLOB containing the attachment
path	Texto	->	Path of the attachment file
name	Texto	->	Name + extension used by the mail client to designate the attachment
cid	Texto	->	ID of attachment (HTML messages only), or " " if no cid is required
type	Texto	->	Value of the content-type header
disposition	Texto	->	Value of the content-disposition header: "inline" or "attachment".
Resultado	4D. MailAttachment	<-	Attachment object

Descrição

Objetos anexo permite referenciar arquivos dentro de um objetoEmail. Isso é idêntico ao comando MAIL New attachment (atalho).

.cid

.cid : Text

Descrição

A propriedade .cid contém a ID do anexo. This property is used in HTML messages only. If this property is missing, the file is handled as a simple attachment (link).

.disposition

.disposition : Text

Descrição

A propriedade .disposition contém o valor do cabeçalho Content-Disposition. Two values are available:

• "inline": the attachment is rendered within the message contents, at the "cid" location. The rendering depends on the mail client.
• "attachment": the attachment is provided as a link in the message.

.getContent()

.getContent() : 4D. Blob

Parameter	Type		Descrição
Resultado	4D. Blob	<-	Conteúdo do anexo

Descrição

Objetos anexo permite referenciar arquivos dentro de um objetoEmail. Summary -->permite que crie um objeto anexo que pode adicionar a um objeto Email .

.name

.name : Text

Descrição

A propriedade.name contém o nome e extensão do anexo. Como padrão, é o nome do arquivo, a não ser que outro nome tenha sido especificado no comando MAIL New attachment.

.path

.path : Text

Descrição

A propriedade .path contém a rota POSIX do arquivo anexo, se existir.

.platformPath

Histórico

Versão	Mudanças
v19	Adicionado

.platformPath : Text

Descrição

A propriedade.platformPath retorna a rota do arquivo anexo expresso na sintaxe da plataforma atual.

.type

.type : Text

Descrição

A propriedade .type contém o content-type do arquivo anexo. Se o tipo não for passado explicitamente ao comando MAIL New attachment, o content-type é baseado na sua extensão de arquivo.