I have some handy code which checks the file extension of a file for me and attaches an image depending on the result.
If the extension doesn't match any of the ones I have listed, I want to attach a generic 'Unknown' image. What could I enter into the case to accomplish this?
function get_extension(file_name) {
return file_name.split('.').pop().toLowerCase();
}
function check_file_type(file) {
switch(get_extension(file)) {
//if .jpg/.gif/.png do something
case 'jpg': case 'gif': case 'png':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_image.png')}';
break;
//if .zip/.rar do something else
case 'zip': case 'rar':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_zip.png')}';
break;
//if .pdf do something else
case 'pdf': case 'pptx':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_pdf.png')}';
break;
//if .docx do something else
case 'docx':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_word.png')}';
break;
//if unknown do something else
case 'WHAT DO I DO HERE' <-- ???
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_other.png')}';
break;
}
}
Any suggestions?
Use default:
switch(get_extension(file)) {
//if .jpg/.gif/.png do something
case 'jpg': case 'gif': case 'png':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_image.png')}';
break;
//if .zip/.rar do something else
case 'zip': case 'rar':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_zip.png')}';
break;
//if .pdf do something else
case 'pdf': case 'pptx':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_pdf.png')}';
break;
//if .docx do something else
case 'docx':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_word.png')}';
break;
//if unknown do something else
default:
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_other.png')}';
break;
}
You wouldn't use a case if nothing matches, you would use default. It would look like:
function get_extension(file_name) {
return file_name.split('.').pop().toLowerCase();
}
function check_file_type(file) {
switch(get_extension(file)) {
//if .jpg/.gif/.png do something
case 'jpg': case 'gif': case 'png':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_image.png')}';
break;
//if .zip/.rar do something else
case 'zip': case 'rar':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_zip.png')}';
break;
//if .pdf do something else
case 'pdf': case 'pptx':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_pdf.png')}';
break;
//if .docx do something else
case 'docx':
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_word.png')}';
break;
//if unknown do something else
default:
return '{!URLFOR($Resource.Common, 'images/filetypes/doctype_other.png')}';
break;
}
}
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