Submitting HTML Forms

> On 12 Dec 2018, at 05:13, Richard Kenneth Eng <[hidden email]> wrote:
>
> I'm having a lot of difficulty getting file uploading to work using Teapot/Zinc. The documentation is not entirely clear about how it's supposed to work, and the example provided doesn't quite work. I'm referring to section "4.6 Submitting HTML Forms" in "Enterprise Pharo – a Web Perspective."
>
> Here's my setup...
>
> I have a Teapot route like:
>
> GET: '/upload-handler' -> [ :req | self uploadHandler: req ];
>
> where
>
> uploadHandler: req
>    ^ '<div>
>       <form method="POST" action="upload-handler"  enctype="multipart/form-data">
>          <input type="file" name="fileupload">
>          <input type="submit" value="Upload!">
>       </form>
>       </div>'
>
> I have a submission form like:
>
> GET: '/submission' -> [ :req | self submissionPage: req ];
> POST: '/submission' -> [ :req | self handleSubmission: req ];
>
> where
>
> submissionPage: req
>    ^ '<div>
>       <form method="POST">
>          <input type="file" name="fileupload" value="">
>          <input type="submit" value="Submit">
>       </form>
>       </div>'
>
> handleSubmission: req
>    ZnClient new
>       url: 'http://174.117.171.194/upload-handler';
>       addPart: (ZnMimePart
>          fieldName: 'fileupload' fileNamed: 'S1-ABCD012345.st' );
>       post.
>
> When I submit the submission form, I get "FileDoesNotExist: File @ /S1-ABCD012345.st".
>
> It doesn't matter what path I use to get to S1-ABCD012345.st. I tried "/Users/richardeng/Documents". I tried "/Documents". I tried "/". I don't know what path it's looking for. The file is there – there's no reason why it can't find it.
>
> I guess I'm just not understanding how this whole thing is supposed to work. Any ideas?
>
> Richard

> Richard,
>
> You are mixing several aspects. I can only answer for Zinc itself, not
> Teapot.
>
> First start a local server
>
>   ZnServer startDefaultOn: 1701.
>
> Then go to the example (handler) at http://localhost:1701/form-test-3 and
> try uploading a text file. If all goes well you will see its contents
> displayed. Check the code at ZnDefaultServerDelegate>>#formTest3:
>
> To do the same programmatically, client side, do
>
> ZnClient new
>   url: 'http://localhost:1701/form-test-3';
>   addPart: (ZnMimePart fieldName: 'file' fileNamed: '/tmp/foo.txt');
>   post.
>
> In the response HTML that you get back, you will see the contents of your
> text file.
>
> Of course the field name must match what the handler expects.
>
> HTH,
>
> Sven
>
>> On 12 Dec 2018, at 05:13, Richard Kenneth Eng &lt;

> &gt; wrote:
>>
>> I'm having a lot of difficulty getting file uploading to work using
>> Teapot/Zinc. The documentation is not entirely clear about how it's
>> supposed to work, and the example provided doesn't quite work. I'm
>> referring to section "4.6 Submitting HTML Forms" in "Enterprise Pharo – a
>> Web Perspective."
>>
>> Here's my setup...
>>
>> I have a Teapot route like:
>>
>> GET: '/upload-handler' -> [ :req | self uploadHandler: req ];
>>
>> where
>>
>> uploadHandler: req
>>    ^ '
> <div>
>>      
> <form method="POST" action="upload-handler"
> enctype="multipart/form-data">
>>          
> <input type="file" name="fileupload">
>>          
> <input type="submit" value="Upload!">
>>      
> </form>
>>      
> </div>
> '
>>
>> I have a submission form like:
>>
>> GET: '/submission' -> [ :req | self submissionPage: req ];
>> POST: '/submission' -> [ :req | self handleSubmission: req ];
>>
>> where
>>
>> submissionPage: req
>>    ^ '
> <div>
>>      
> <form method="POST">
>>          
> <input type="file" name="fileupload" value="">
>>          
> <input type="submit" value="Submit">
>>      
> </form>
>>      
> </div>
> '
>>
>> handleSubmission: req
>>    ZnClient new
>>       url: 'http://174.117.171.194/upload-handler';
>>       addPart: (ZnMimePart
>>          fieldName: 'fileupload' fileNamed: 'S1-ABCD012345.st' );
>>       post.
>>
>> When I submit the submission form, I get "FileDoesNotExist: File @
>> /S1-ABCD012345.st".
>>
>> It doesn't matter what path I use to get to S1-ABCD012345.st. I tried
>> "/Users/richardeng/Documents". I tried "/Documents". I tried "/". I don't
>> know what path it's looking for. The file is there – there's no reason
>> why it can't find it.
>>
>> I guess I'm just not understanding how this whole thing is supposed to
>> work. Any ideas?
>>
>> Richard

> Sven Van Caekenberghe-2 wrote
>> Richard,
>>
>> You are mixing several aspects. I can only answer for Zinc itself, not
>> Teapot.
>>
>> First start a local server
>>
>>  ZnServer startDefaultOn: 1701.
>>
>> Then go to the example (handler) at http://localhost:1701/form-test-3 and
>> try uploading a text file. If all goes well you will see its contents
>> displayed. Check the code at ZnDefaultServerDelegate>>#formTest3:
>>
>> To do the same programmatically, client side, do
>>
>> ZnClient new
>>  url: 'http://localhost:1701/form-test-3';
>>  addPart: (ZnMimePart fieldName: 'file' fileNamed: '/tmp/foo.txt');
>>  post.
>>
>> In the response HTML that you get back, you will see the contents of your
>> text file.
>>
>> Of course the field name must match what the handler expects.
>>
>> HTH,
>>
>> Sven
>>
>>> On 12 Dec 2018, at 05:13, Richard Kenneth Eng &lt;
>
>> horrido.hobbies@
>
>> &gt; wrote:
>>>
>>> I'm having a lot of difficulty getting file uploading to work using
>>> Teapot/Zinc. The documentation is not entirely clear about how it's
>>> supposed to work, and the example provided doesn't quite work. I'm
>>> referring to section "4.6 Submitting HTML Forms" in "Enterprise Pharo – a
>>> Web Perspective."
>>>
>>> Here's my setup...
>>>
>>> I have a Teapot route like:
>>>
>>> GET: '/upload-handler' -> [ :req | self uploadHandler: req ];
>>>
>>> where
>>>
>>> uploadHandler: req
>>>   ^ '
>> <div>
>>>
>> <form method="POST" action="upload-handler"
>> enctype="multipart/form-data">
>>>
>> <input type="file" name="fileupload">
>>>
>> <input type="submit" value="Upload!">
>>>
>> </form>
>>>
>> </div>
>> '
>>>
>>> I have a submission form like:
>>>
>>> GET: '/submission' -> [ :req | self submissionPage: req ];
>>> POST: '/submission' -> [ :req | self handleSubmission: req ];
>>>
>>> where
>>>
>>> submissionPage: req
>>>   ^ '
>> <div>
>>>
>> <form method="POST">
>>>
>> <input type="file" name="fileupload" value="">
>>>
>> <input type="submit" value="Submit">
>>>
>> </form>
>>>
>> </div>
>> '
>>>
>>> handleSubmission: req
>>>   ZnClient new
>>>      url: 'http://174.117.171.194/upload-handler';
>>>      addPart: (ZnMimePart
>>>         fieldName: 'fileupload' fileNamed: 'S1-ABCD012345.st' );
>>>      post.
>>>
>>> When I submit the submission form, I get "FileDoesNotExist: File @
>>> /S1-ABCD012345.st".
>>>
>>> It doesn't matter what path I use to get to S1-ABCD012345.st. I tried
>>> "/Users/richardeng/Documents". I tried "/Documents". I tried "/". I don't
>>> know what path it's looking for. The file is there – there's no reason
>>> why it can't find it.
>>>
>>> I guess I'm just not understanding how this whole thing is supposed to
>>> work. Any ideas?
>>>
>>> Richard
>
>
>
>
>
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

> On 12 Dec 2018, at 20:02, Ben Coman <[hidden email]> wrote:
>
>
>
> On Thu, 13 Dec 2018 at 00:27, horrido <[hidden email]> wrote:
> Okay, I managed to hack together a solution from the example. It's not pretty
> but it seems to work. I needed to remain within the Teapot framework.
>
> However, I have a question regarding the ZnEntityTooLarge exception. How can
> I capture it and resume execution? The exception seems to occur before my
> POST handler is called.
>
> I'm not familiar with that exception, but in general you can wrap code like this...
>
> myMethod
>     [  do stuff ] on: ZnEntityTooLarge do: [ :ex | fix stuff. ex resume ]