Update item properties reset back to no value (null)

Anonymous User

I'm building a test script that will change an item's property value (accessInformation), and then reset that property back to no value (Null) in the ArcGIS API for Python. I've tried passing None/False into the dict to update with no luck. Even a empty string would be favorable then my current workaround ("Null")

Please help.

-K

AnttiKajanus

I noticed that None or empty string doesn't make any changes to the item when updated as well. I think is due REST api behavior which has a parameter to set when clearing fields is applied (clearEmptyFields) and I cannot find that from the Python API. 

I gave it a go and tried if I can get the removing values working and it looks like following actually works. It will use the update endpoint and set description to empty. 

<SPAN class="keyword token">import</SPAN> requests
<SPAN class="keyword token">import</SPAN> json

call <SPAN class="operator token">=</SPAN><SPAN class="string token">'http://{}/sharing/rest/content/users/{}/items/{}/update?f=json&token={}&description=&clearEmptyFields=True'</SPAN><SPAN class="punctuation token">.</SPAN>format<SPAN class="punctuation token">(</SPAN>
            gis<SPAN class="punctuation token">.</SPAN>properties<SPAN class="punctuation token">.</SPAN>urlKey <SPAN class="operator token">+</SPAN> <SPAN class="string token">"."</SPAN> <SPAN class="operator token">+</SPAN> gis<SPAN class="punctuation token">.</SPAN>properties<SPAN class="punctuation token">.</SPAN>customBaseUrl<SPAN class="punctuation token">,</SPAN>
            gis<SPAN class="punctuation token">.</SPAN>users<SPAN class="punctuation token">.</SPAN>me<SPAN class="punctuation token">.</SPAN>username<SPAN class="punctuation token">,</SPAN> 
            copy_to_item<SPAN class="punctuation token">.</SPAN>id<SPAN class="punctuation token">,</SPAN>
            gis<SPAN class="punctuation token">.</SPAN>_con<SPAN class="punctuation token">.</SPAN>token<SPAN class="punctuation token">)</SPAN>

request <SPAN class="operator token">=</SPAN> requests<SPAN class="punctuation token">.</SPAN>post<SPAN class="punctuation token">(</SPAN>call<SPAN class="punctuation token">)</SPAN>
json_data <SPAN class="operator token">=</SPAN> json<SPAN class="punctuation token">.</SPAN>loads<SPAN class="punctuation token">(</SPAN>request<SPAN class="punctuation token">.</SPAN>text<SPAN class="punctuation token">)</SPAN>
json_data
<SPAN class="comment token"># {'success': True, 'id': 'db9db040d6184e989e1aac253df840cb'}</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

It's a bit weird that the ArcGIS Python API doesn't support this out of the box. Or if it does, it would be nice to know since I couldn't figure it out.