please take a look at this, it's probably really easy, but I'm totally stuck
So here is my tragedy: I have an SQL query which pulls a record from a database. One of the fields is called file1. It contains a path to a file (i.e. media/inline/asdasd.jpeg). This file is accessible through LocalFS. LocalFS requires a syntax like media['inline']['asdasd.jpg'], so I wrote a script to convert the Unix style path to something LocalFS can understand. This works fine. Here is the code I use in my DTML doc to render asdasd.jpg: <dtml-call expr="REQUEST.set('imgpath',makeLocalFSPath(file1))"> <dtml-var "_.getitem(imgpath,1)" null="_[media['none.gif']]"> The first line calls the pythinon script that will make the LocalFS path. The second one endeavors to render the image using DTML's built in MIME to HTML technology which is necessary because using <IMG src=..... would not give me the with and height and is bad practice anyway. The null tag is just to shove that empty image marker in in case there is nothing in the field. When I call the page it gets a key error Error Type: KeyError Error Value: media['inline']['asdasd.jpeg'] But if I put <dtml-var "media['inline']['asdasd.jpeg']"> in any document in renders just fine. So basically the variable value gets rendered, but since It's not a variable but an expression, Zope doesn't know what to do. Oh and I tried putting double quotes on imgpath via the makeLocalFSPath function to no avail. Thank you for your help Jacob
Jacob Singh wrote:
So here is my tragedy: I have an SQL query which pulls a record from a database. One of the fields is called file1. It contains a path to a file (i.e. media/inline/asdasd.jpeg). This file is accessible through LocalFS. LocalFS requires a syntax like media['inline']['asdasd.jpg'], so I wrote a script to convert the Unix style path to something LocalFS can understand. This works fine. Here is the code I use in my DTML doc to render asdasd.jpg:
<dtml-call expr="REQUEST.set('imgpath',makeLocalFSPath(file1))"> <dtml-var "_.getitem(imgpath,1)" null="_[media['none.gif']]">
The first line calls the pythinon script that will make the LocalFS path. The second one endeavors to render the image using DTML's built in MIME to HTML technology which is necessary because using <IMG src=..... would not give me the with and height and is bad practice anyway. The null tag is just to shove that empty image marker in in case there is nothing in the field. When I call the page it gets a key error Error Type: KeyError Error Value: media['inline']['asdasd.jpeg']
But if I put <dtml-var "media['inline']['asdasd.jpeg']"> in any document in renders just fine. So basically the variable value gets rendered, but since It's not a variable but an expression, Zope doesn't know what to do. Oh and I tried putting double quotes on imgpath via the makeLocalFSPath function to no avail.
Uhmm, it seems to me that you are doing something like imagepath = "media['inline']['asdasd.jpeg']" If yes, then getitem(imagepath,1) can't work. There is no object named media['inline'], there is an object with id "media" and it holds a subobject with id "inline". getitem() doesn't interpret the [] tokens, it treats it as a string, while python doesinterpret them and do the right operation (object lookup) (that's why your <dtml-var "..."> works). Fortunatly zope has a nice mechanism to to what you want, take a look at the restrictedTraverse method, which should also work with LocalFS. (ZMI online-help) untested: <dtml-var "restrictedTraverse(file1)"> should work in the context of the folder which contains "media". cheers, oliver
Thankx for the help, but I can't get around the permissions issue now. indStory is located in the root and so is media, so basically it's going restrictedTransverse(media/inline/asdasd.jpeg). which is encouraging, at least it's finding the file now, and I don't even have to convert the string, but I still can't get around the security issue. -----Original Message----- From: zope-admin@zope.org [mailto:zope-admin@zope.org] On Behalf Of Oliver Bleutgen Sent: Wednesday, November 21, 2001 12:54 PM To: zope@zope.org Subject: Re: [Zope] please take a look at this, it's probably really easy, but I'm totally stuck Jacob Singh wrote:
So here is my tragedy: I have an SQL query which pulls a record from a database. One of the fields is called file1. It contains a path to a file (i.e. media/inline/asdasd.jpeg). This file is accessible through LocalFS. LocalFS requires a syntax like media['inline']['asdasd.jpg'], so I wrote a script to convert the Unix style path to something LocalFS can understand. This works fine. Here is the code I use in my DTML doc to render asdasd.jpg:
<dtml-call expr="REQUEST.set('imgpath',makeLocalFSPath(file1))"> <dtml-var "_.getitem(imgpath,1)" null="_[media['none.gif']]">
The first line calls the pythinon script that will make the LocalFS path. The second one endeavors to render the image using DTML's built in MIME to HTML technology which is necessary because using <IMG src=..... would not give me the with and height and is bad practice anyway. The null tag is just to shove that empty image marker in in case there is nothing in the field. When I call the page it gets a key error Error Type: KeyError Error Value: media['inline']['asdasd.jpeg']
But if I put <dtml-var "media['inline']['asdasd.jpeg']"> in any document in renders just fine. So basically the variable value gets rendered, but since It's not a variable but an expression, Zope doesn't know what to do. Oh and I tried putting double quotes on imgpath via the makeLocalFSPath function to no avail.
Uhmm, it seems to me that you are doing something like imagepath = "media['inline']['asdasd.jpeg']" If yes, then getitem(imagepath,1) can't work. There is no object named media['inline'], there is an object with id "media" and it holds a subobject with id "inline". getitem() doesn't interpret the [] tokens, it treats it as a string, while python doesinterpret them and do the right operation (object lookup) (that's why your <dtml-var "..."> works). Fortunatly zope has a nice mechanism to to what you want, take a look at the restrictedTraverse method, which should also work with LocalFS. (ZMI online-help) untested: <dtml-var "restrictedTraverse(file1)"> should work in the context of the folder which contains "media". cheers, oliver _______________________________________________ Zope maillist - Zope@zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
participants (2)
-
Jacob Singh -
Oliver Bleutgen