[danielwalters]

Hello,

I'm building a Linux / Python web application that allows users to interact with processmaker cases. Everything has been going great with the REST API until i've tried to upload input documents.

I'm hit with the following error in my response:

Code: Select all

{'code': 400, 'message': 'Bad Request: This filename does not exist!'}

The documentation for this api call recognises this problem with PHP (im using python) and suggests to use CurlFile.
http://wiki.processmaker.com/3.2/REST_A ... _Documents

I've also tried using the "@" before the filename but that didn't work.

I've tried both the standard Python Requests library and httplib2 but neither get around this error.

My code is as follows:
Uploader

Code: Select all

def uploadInputDoc(access_token, app_uid, inp_doc_uid, tas_uid, app_doc_comment, form):
    try:
        url = "http://mybpmurl/api/1.0/workflow/cases/"+app_uid+"/input-document"
        querystring = {"access_token":access_token}
        payload = {'inp_doc_uid':inp_doc_uid,'tas_uid':tas_uid,'app_doc_comment':app_doc_comment,'form':form}
        headers = {
            }
        response = requests.request("POST", url, data=payload, headers=headers, params=querystring)
        return response
    except Exception as e:
        print("error: " + str(e) )

called by:

Code: Select all

uploadInputDoc(bmpAccessToken, "myappidhere", "myinputdocidhere", "mytasuidhere", "comment, "/media/report.pdf" )

Any help would be greatly appreciated!

Thanks,
Daniel

[amosbatto]

called by:

Code: Select all

uploadInputDoc(bmpAccessToken, "myappidhere", "myinputdocidhere", "mytasuidhere", "comment, "/media/report.pdf" )

You forgot the closing quotation mark for your comment. Try this:

Code: Select all

uploadInputDoc(bmpAccessToken, "myappidhere", "myinputdocidhere", "mytasuidhere", "comment", "/media/report.pdf" )

You need to put the contents of your file in the POST variables. I don't know if this will work, but try this:

Code: Select all

def uploadInputDoc(access_token, app_uid, inp_doc_uid, tas_uid, app_doc_comment, path_to_file):
    try:
        url = "http://mybpmurl/api/1.0/workflow/cases/"+app_uid+"/input-document"
        querystring = {"access_token":access_token}
        payload = {'inp_doc_uid':inp_doc_uid,'tas_uid':tas_uid,'app_doc_comment':app_doc_comment,'form': open(path_to_file, "rb")}
        headers = {
            }
        response = requests.request("POST", url, data=payload, headers=headers, params=querystring)
        return response
    except Exception as e:
        print("error: " + str(e) )

If that didn't work, then try this:

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        payload = {'inp_doc_uid':inp_doc_uid,'tas_uid':tas_uid,'app_doc_comment':app_doc_comment,'form': open(path_to_file, "rb").read()}

I haven't worked with Python for over a decade, but that is how it used to work.

[danielwalters]

Hi amosbatto,

Thanks for the help.

Unfortunately the proposed changes did not work, and results with the same error.

Code: Select all

def uploadInputDoc(access_token, app_uid, inp_doc_uid, tas_uid, app_doc_comment, path_to_file):
    try:
        url = "http://mybpmurl/api/1.0/workflow/cases/"+app_uid+"/input-document"
        querystring = {"access_token":access_token}
        payload = {'inp_doc_uid':inp_doc_uid,'tas_uid':tas_uid,'app_doc_comment':app_doc_comment,'form': open(path_to_file, "rw").read()}
        headers = {
            }
        response = requests.request("POST", url, data=payload, headers=headers, params=querystring)
        return response
    except Exception as e:
        print("error: " + str(e) )

returns

Code: Select all

{'error': {'code': 400, 'message': 'Bad Request: This filename does not exist!'}}

[amosbatto]

Post the code of your requests.request() function. You are probably URL encoding your data. In PHP you can't use http_build_query() when sending a file and you are probably doing something similar in Python that transforms the data.

[danielwalters]

The request method i'm using is documented here:
http://docs.python-requests.org/en/mast ... ts.request

I've read that the data is 'form-encoded', but thats about it - I don't currently understand the differences or know how they work.

Is there a certain type of encoding that is known to work that I could try and adopt? If so, i'm happy to go away to learn this.

Thanks again for the help. Luckily I have GDrive and Django as additional storage platforms if this fails, bur really it would be great to integrate all parts of my system with ProcessMaker.

Daniel

[amosbatto]

"form encoding" probably means that the data is being passed through urllib.urlencode().

Does it work this way?:

Code: Select all

def uploadInputDoc(access_token, app_uid, inp_doc_uid, tas_uid, app_doc_comment, path_to_file):
    try:
        url = "http://mybpmurl/api/1.0/workflow/cases/"+app_uid+"/input-document"
        querystring = {"access_token":access_token}
        payload = {'inp_doc_uid':inp_doc_uid,'tas_uid':tas_uid,'app_doc_comment':app_doc_comment}
        files = {'form': open(path_to_file, "rb")}
        headers = {
            }
        response = requests.request("POST", url, data=payload, headers=headers, params=querystring, files=files)
        return response
    except Exception as e:
        print("error: " + str(e) ) 

[danielwalters]

Does it work this way?:

It does! I can now upload files to my case.

I can't thank you enough for your time.

I will integrate this into my project and learn the differences between the code.

Thanks again,

Daniel

[amosbatto]

I upload file via Postman is not working but Advanced Rest Client is working, please help me.

The only way to upload a file in Postman is to encode the file in Base64.

Here is an online Base64 encoder:
https://codebeautify.org/base64-encode

To avoid using Base64, it is recommended to use a language like PHP or Python to upload files.

[DeborahKelly]

Post the code of your requests.Request work. You might be generally URL encoding your information. In near and dear presentation page you can't use.

[vktRus]

My variant «Upload Input Document».