Advice on File Uplaod
I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Advice on File Uplaod
I have the same problem but unable to find solution yet, except to validate as much as I can in the browser side so that I can retain the file field. -Dan - Original Message - From: John Brayton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 5:48 PM Subject: Advice on File Uplaod I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Advice on File Uplaod
Validate with javascript before the submit. That is the only way. There is no means to pass the file reference back to the page. Brandon Goodin Phase Web and Multimedia PO Box 85 Whitefish MT 59937 P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -Original Message- From: Dan Tran [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 7:09 PM To: Struts Users Mailing List Subject: Re: Advice on File Uplaod I have the same problem but unable to find solution yet, except to validate as much as I can in the browser side so that I can retain the file field. -Dan - Original Message - From: John Brayton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 5:48 PM Subject: Advice on File Uplaod I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Advice on File Uplaod
There could be another way. You may probably save the file first with the sessionID in a temp folder. Save the path to the session and use it when the file field is null. I believe that should work. Brandon Goodin wrote: Validate with javascript before the submit. That is the only way. There is no means to pass the file reference back to the page. Brandon Goodin Phase Web and Multimedia PO Box 85 Whitefish MT 59937 P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -Original Message- From: Dan Tran [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 7:09 PM To: Struts Users Mailing List Subject: Re: Advice on File Uplaod I have the same problem but unable to find solution yet, except to validate as much as I can in the browser side so that I can retain the file field. -Dan - Original Message - From: John Brayton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 5:48 PM Subject: Advice on File Uplaod I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Advice on File Uplaod
Agree. The reason why there is no way to retain the file name after server side validation fail, is security. Imagine this, the server side can make the File field hidden and automatically submit the form so that it retrieve a file on your browser computer. -Dan - Original Message - From: Brandon Goodin [EMAIL PROTECTED] To: Struts Users Mailing List [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 7:42 PM Subject: RE: Advice on File Uplaod Validate with javascript before the submit. That is the only way. There is no means to pass the file reference back to the page. Brandon Goodin Phase Web and Multimedia PO Box 85 Whitefish MT 59937 P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -Original Message- From: Dan Tran [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 7:09 PM To: Struts Users Mailing List Subject: Re: Advice on File Uplaod I have the same problem but unable to find solution yet, except to validate as much as I can in the browser side so that I can retain the file field. -Dan - Original Message - From: John Brayton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 5:48 PM Subject: Advice on File Uplaod I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Advice on File Uplaod
We do something a little more complicated to deal with this situation. Since the file is uploaded when they submit, if they need to go back because of validation errors, our form keeps a reference to the uploaded file, and instead of showing a file upload box again it shows the name of the file as text. We have actually developed a rather complex 'widget' that allows us to represent 'file fields' that can have multiple files associated with the field - the list of files already uploaded to that field is shown as text with checkboxes to allow user to select files to remove and a file upload box to allow more to be added (one at a time unfortunately). Theres also a button that invokes a round trip to the server to cause the upload or removal of files (For fields that only allow one file, uploading another file replaces the first). Our base actionForm class contains various utility methods to keep track of what files are uploaded etc... and these methods are invoked from the relevant getters and setters (and there are a couple needed for each such field - for uploading the formfile, for the list of files to trash, etc...) Our file handling code heavily depends on other rather wierd ways in which we (ab)use struts so theres not much point in posting it, but hopefully Ive given you some ideas you can use. -Original Message- From: Peter Gershkovich [mailto:[EMAIL PROTECTED] Sent: Thursday, 13 March 2003 11:53 To: Struts Users Mailing List Subject: Re: Advice on File Uplaod There could be another way. You may probably save the file first with the sessionID in a temp folder. Save the path to the session and use it when the file field is null. I believe that should work. Brandon Goodin wrote: Validate with javascript before the submit. That is the only way. There is no means to pass the file reference back to the page. Brandon Goodin Phase Web and Multimedia PO Box 85 Whitefish MT 59937 P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -Original Message- From: Dan Tran [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 7:09 PM To: Struts Users Mailing List Subject: Re: Advice on File Uplaod I have the same problem but unable to find solution yet, except to validate as much as I can in the browser side so that I can retain the file field. -Dan - Original Message - From: John Brayton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 5:48 PM Subject: Advice on File Uplaod I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Advice on File Uplaod
lol... nice reply... did not see it when I replied. Regards, Daniel -Original Message- From: Andrew Hill [mailto:[EMAIL PROTECTED] Sent: Thursday, March 13, 2003 12:12 PM To: Struts Users Mailing List Subject: RE: Advice on File Uplaod We do something a little more complicated to deal with this situation. Since the file is uploaded when they submit, if they need to go back because of validation errors, our form keeps a reference to the uploaded file, and instead of showing a file upload box again it shows the name of the file as text. We have actually developed a rather complex 'widget' that allows us to represent 'file fields' that can have multiple files associated with the field - the list of files already uploaded to that field is shown as text with checkboxes to allow user to select files to remove and a file upload box to allow more to be added (one at a time unfortunately). Theres also a button that invokes a round trip to the server to cause the upload or removal of files (For fields that only allow one file, uploading another file replaces the first). Our base actionForm class contains various utility methods to keep track of what files are uploaded etc... and these methods are invoked from the relevant getters and setters (and there are a couple needed for each such field - for uploading the formfile, for the list of files to trash, etc...) Our file handling code heavily depends on other rather wierd ways in which we (ab)use struts so theres not much point in posting it, but hopefully Ive given you some ideas you can use. -Original Message- From: Peter Gershkovich [mailto:[EMAIL PROTECTED] Sent: Thursday, 13 March 2003 11:53 To: Struts Users Mailing List Subject: Re: Advice on File Uplaod There could be another way. You may probably save the file first with the sessionID in a temp folder. Save the path to the session and use it when the file field is null. I believe that should work. Brandon Goodin wrote: Validate with javascript before the submit. That is the only way. There is no means to pass the file reference back to the page. Brandon Goodin Phase Web and Multimedia PO Box 85 Whitefish MT 59937 P (406) 862-2245 F (406) 862-0354 [EMAIL PROTECTED] http://www.phase.ws -Original Message- From: Dan Tran [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 7:09 PM To: Struts Users Mailing List Subject: Re: Advice on File Uplaod I have the same problem but unable to find solution yet, except to validate as much as I can in the browser side so that I can retain the file field. -Dan - Original Message - From: John Brayton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 12, 2003 5:48 PM Subject: Advice on File Uplaod I am somewhat of a Struts newbie, and I could use some advice on implementing a component of an application. I have a form that allows a user to upload a file, along with associated meta-data. If the form's validate() method returns ActionErrors, the form will keep the originally entered fields as default values so that the user can just fix his or her errors and continue. Is there a facility to do something similar with a file? I don't really want to have the file transmitted back and forth in the case of a form validation error, and there does not seem to be a mechanism in HTML for including an entire file as a default value anyway. But I do not want the user to need to re-select the file from the file system just because one or more of the meta-data fields has a validation error. Any thoughts on how to go about this? Thanks! John - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
