Help Showurl Doesn't exist

Targets Web
1

I have a web app that creates an excel file, I then need to download it, here is the code:


'f is the folderitem pointing to the excel file

  Dim wf as WebFile
  
  wf = WebFile.Open(f, false)
  
  showurl(wf.url)

The showurl causes a compile error: This item does not exist???

What is going on.

2

Is it not the same as https://forum.xojo.com/30799-download-binarystream ?

3

wf should be a property of the WebPage, a module or session.

As it stands, the webfile gets out of scope when the method ends and the browser cannot download anything.

4

I was doing more research about the Webfile and tried it. The point is why does the compiler complain about it. I’m against a deadline and thought this might get more views as it’s a different heading.

5

I tried your rather simple code and did not get any warning. Is it really the actual code that creates an error ?

6

You want to look at /Examples/Web/Downloading/Downloading.xojo_binary_project

7

I did, it’s doesn’t answer the questions.

That is creating a text file and it compiles. The example doesn’t mention anything about downloading a binary file.


  If TextFile = Nil Then
    // Create a text file to download
    TextFile = New WebFile
    TextFile.MimeType = "text/plain"
    TextFile.ForceDownload = True
    TextFile.FileName = "TextFile.txt"
    
    Dim d As New Date
    d.GMTOffset = Session.GMTOffset
    
    TextFile.Data = "Hello World to " + Session.RemoteAddress + " at " + d.ShortDate + " " + d.ShortTime
    
    // The WebFile.Downloaded event handler is called when the browser
    // requests the file for downloading. This code maps that event handler
    // to the FileDownloaded method on this web page.
    AddHandler TextFile.Downloaded, AddressOf FileDownloaded
  End If
  
  // Showing the URL prompts the browser to download it
  ShowURL(TextFile.URL)
8

I have made wf a property of a module. Same problem.

9

I have been using a slightly modified version of Downloading to serve my customers since 2013. The downloaded files are zip binary archives.

10

So what am I doing wrong?

11

I don’t know. I tested both your posted code and it works just fine.

Usually “does not exist” stems from mispelling… Or wrong scope …

12

Arggg I hate these mysterious problems.

13

Clear the cache.
Triple check that you aren’t compiling a console app.

14

It’s a web app. I’ve been working on it for a few weeks. I’m just trying to add a feature that my BOD wants.

How can the Cache have anything to do with the compiling?

15

Strange things in Xojo often come down to a cache issue.
If you don’t want to try it, no problem. :slight_smile:

16

Where does your code exist? On a WebPage? Elsewhere?

17

The code is in a module.

18

The help suggests that the best place for this is as an event or method of a webcontrol.
Where it would be called as

me.ShowUrl (…)

Perhaps the fact this is in a module means that there is no suitable ‘me’ to provide the ShowUrl.
What happens if you put it in the action event of a webbutton?

19

The global ShowUrl function does not exist in web apps
What DOES exists is one on WebSession and one on WebControl

And that makes sense as in a web app you have to know WHICH session to invoke the show url on so it shows in the right persons browser

20

Jeff you win! That was it. Moved into a form and it worked!!

Thanks to all.