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For some applications, you might want to restrict the type of file that is uploaded. For example, you might not want to accept graphic files in a document library.
You use the accept
attribute to restrict the type of file that you allow in an upload. When an accept
qualifier is present, the uploaded files MIME content type must match the criteria specified or an error occurs. The accept
attribute takes a comma-separated list of MIME data names, optionally with wildcards.
A files MIME type is determined by the browser. Common types, such as image/gif and text/plain, are registered in the browser.
Note: Current versions of Microsoft Internet Explorer and Netscape support MIME type associations. Other browsers and earlier versions might ignore these associations.
ColdFusion saves any uploaded file if you omit the accept
attribute or specify "*/*". You can restrict the file types, as demonstrated in the following examples.
The following cffile
tag saves an image file only if it is in the GIF format:
<cffile action="Upload" fileField="Form.FiletoUpload" destination="c:\uploads\" nameConflict="Overwrite" accept="image/gif">
The following cffile
tag saves an image file only if it is in GIF or JPEG format:
<cffile action="Upload" fileField="Form.FiletoUpload" destination="c:\uploads\" nameConflict="Overwrite" accept="image/gif, image/jpeg">
Note: If you receive an error similar to "The MIME type of the uploaded file (image/jpeg) was not accepted by the server", enter accept="image/jpeg"
to accept JPEG files.
This cffile
tag saves any image file, regardless of the format:
<cffile action="Upload" fileField="Form.FiletoUpload" destination="c:\uploads\" nameConflict="Overwrite" accept="image/*">
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