OfficeDev/PnP-JS-Core

Repository for the PnP JavaScript Core component development together with community members

Andrew Koltyakov

@koltyakov

@eirikb no, it's not possible, still a global singleton. I experimented with a logic that dynamically switches what fetch client instance to use based on other factors. In my case, it was x-clientinstance custom header (https://github.com/koltyakov/sp-pnp-node/blob/8c09548476f7cb09565f4c528afa39f5647cd412/test/multiproc/instanced.ts). Yet, there is a possibility that not all fluent chains keep a custom header and some deeply nested calls counld end up with a wrong fetch client and auth.

Miguel Ángel González Muñoz

@dactivo

Continuing with my last message. An example of a request made by a contributor (not edit or full control permissions) would be this one, he is capable of updating MyStatus which is the readonly field:

var reqUrl= "https://XXXXXX.sharepoint.com/sites/XXXXXX/_api/web/lists/getByTitle('MyItems')/items(7)/ValidateUpdateListItem";
var body= {"formValues":[{"FieldName":"MyStatus","FieldValue":"Whatever"}],bNewDocumentUpdate:false}
var _payloadOptions = {
method: "POST",
body: undefined,
headers: {
credentials: "include",
Accept: "application/json; odata=verbose",
"Content-Type": "application/json; odata=verbose"
}
};
fetch("https://XXXXXX.sharepoint.com/sites/XXXXXX/_api/contextinfo",_payloadOptions).then(r=>r.json())
.then(r=>
_payloadOptions.headers["X-RequestDigest"]=r.d.GetContextWebInformation.FormDigestValue
_payloadOptions.body=JSON.stringify(body);
fetch(reqUrl
,_payloadOptions).then(r=>r.json()).then(r=>console.log(r))
})

Andrew Koltyakov

@koltyakov

@dactivo didn't face the problem with this particular case. But I usually never rely on read-only custom column props in as vital places logic restriction, if I can recall it right they only apply validations in OOTB forms, but not for API methods (I guess that not only ValidateUpdateListItem can update custom read-only field value but Update method as well, but I might be wrong).

Eirik Brandtzæg

@eirikb

@koltyakov :( If I only need to change the web I could use the second argument to configureinstead - and always use the same FetchClient?

Miguel Ángel González Muñoz

@dactivo

@koltyakov the update method does not allow you to update readonly columns if you have contributor permissions, following my tests, but validateupdatelistitem allows it

Andrew Koltyakov

@koltyakov

@eirikb

Same creds, different webs -> const w1 = Web(webAbsUrl1).configure(...); const w2 = Web(webAbsUrl2).configure(...);
Different creds, same or different webs -> splitting techniques (like I showed before, self-orchestrating of fetch clients), or, which is better isolated, forking a process for different creds.

Eirik Brandtzæg

@eirikb

Would new Web be better / different than running sp.configure?

Andrew Koltyakov

@koltyakov

In v2, it's Web(), not new Web(). I prefer it over configure and baseUrl settings, but just my own preference. As historically almost never used baseUrl. IMO, it's more strict and straightforward even while ending up with similar results.

Eirik Brandtzæg

@eirikb

Got it. And yes I'm using v2. Thank you. Your answers are great as always :)

Eirik Brandtzæg

@eirikb

@koltyakov The solution seems to work great, thanks. Note; I decided to do both. I have a helper class exposing sp and web, and if someone calls pnp.sp.web instead of pnp.web it would point at the wrong web, but when using .configure it will still work. (My pnp.web is based on Web(url))

And I do .setup outside of everything, as it doesn't matter when/how it is done

AshokSPFX-cloud

@AshokSPFX-cloud

copyto(destinationurl,true) , when i am trying this it throwing error "The label that's applied to this item prevents it from being moved or renamed. Check the item's label for more details"

Miguel Ángel González Muñoz

@dactivo

Hi, Andrew, I was trying to implement react solution with webpack for Sharepoint 2013, I have seen too the generator sppp, my project works great for react and ui-fabric, but not for spfx-controls-react (its name says everything :-(), do you know if there is a possibility of tweaking it or any version for spfx-controls-react that can be compatible for this version of SHP? If not, any advice about other bundle of controls apart react and ui fabric. Thx.

@koltyakov thx for your help

Eirik Brandtzæg

@eirikb

Does items..versions escape field names? So escaped field names are double escaped ?

E.g., I noticed Last Modified looks like Last_x005f_x0020_x005f_Modified

Space is escaped as x0020, and _ is escaped as x005f, so it becomes:
Last Modified -> Last_x0020_Modified (in item) -> Last_x005f_x0020_x005f_Modified (in versions).
I don't see how this can be properly "unescaped"

jmls

@jmls

morning all - I'm a sharepoint and pnp noob and struggling to get some data back how I'd like

if I make a request to get a list item, I get this data back

"RoleAssignments": {
    "__deferred": {
      "uri": "<sharepoint_url>/_api/Web/Lists(guid'9af2ab3e-3a61-49a5-bd25-492ea7191b43')/Items(31)/RoleAssignments"
    }
  },

  "FileSystemObjectType": 0,
  "Id": 31,
  "ServerRedirectedEmbedUrl": "",
  "Dependency": false,

what is the "__deferred" property here ? do I need to make another call to get the RoleAssignments property or can I tell sp / pnp to get it as part of the initial request ?

and do I have to do the same for each deferred property ?

Andrew Koltyakov

@koltyakov

Hey @jmls, it depends. In REST API, via this URL you can get corresponding object(s) for a specific object.
However, extra requests would be incorrect in case some additional data is needed for collection.
REST API allows expanding and selecting the props.

  const items = await list.items
    // .select('Id,Title,RoleAssignments/Member/Title,RoleAssignments/RoleDefinitionBindings/*')
    .expand('RoleAssignments/Member,RoleAssignments/RoleDefinitionBindings').get();

jmls

@jmls

thanks

if I have a field called "Current status works" then in returned data I get the property Current_x0020_status_x0020_works (yes, so x0020 is encoding for a space). Is there any way of getting the property back as either "Current_status_works" or "CurrentStatusWorks" ?

Andrew Koltyakov

@koltyakov

These are EntityPropertyName. In most of the cases, EntityPropertyName would be equal to InternalName.
An Internal name is created during a field provisioning and can't be changed later on. A good practice is defining Internal Name to contain no banned symbols. So an Internal Name would end up developer-friendly. The bad practice is creating fields manually and providing display name (Title) without thinking what an internal name it leads to.
The names can be checked via API:

Is there any way of getting the property back as either "Current_status_works" or "CurrentStatusWorks" ?

Only if a field is originally created/provisioned with a Dev-friendly internal name.
In the UI, it can be done by creating a field without using disallowed symbols when then a field is created renaming its display name to whatever a user should see in the UI.
Or creating a field with code. PnP Provisioning Engine does this job well.

jmls

@jmls

can I manually adjust the EntityPropertyName ?

Andrew Koltyakov

@koltyakov

No, please see the previous message.

jmls

@jmls

sorry, you only mentioned that internalName can't be changed. I was hoping that EntityPropertyName could ... ;)

thanks again

Andrew Koltyakov

@koltyakov

Oh, got it. Yes, the entity prop will be as internal with a little extension. In this term, yes, you can control what it ends up.

@jmls generally, if not using spaces, non latin characters, numbers in front of the name, underscores (etc.), prop name as well as internal name will be good for a developer eye.

jmls

@jmls

did this change between sp2010 and sp2019 ? I ask because I am modernizing an old js app that read data and sent it into a legacy app , but the field names they used are camelCase (both input and output) - unfortunately they upgraded their sp from 2010 to 2019 without doing any checks / tests and wondered why things "stopped working" :)

the urls they used include _vti_bin/ListData.svc and similar

Andrew Koltyakov

@koltyakov

_vti_bin/ListData.svc is the predecessor of Lists REST API, shares something similar, but legacy and not used
even in sp2010 times I know nobody who used it, those times JSOM was pretty much a thing
however, even in SPO the legacy APIs are still presented for backward compatibility reasons
"stopped working" - this could easily be the case, just imagine what a timeframe between those two versions releases ;)

Eirik Brandtzæg

@eirikb

I remember using the _vti_bin back in SharePoint 2007. Moved to JSOM in 2010. Still use a lot of JSOM

Andrew Koltyakov

@koltyakov

yep, JSOM/CSOM still have things to offer when something is not or ever-will-not-be/we'd-wish-it-to-be covered in REST, true story of sp dev

Eirik Brandtzæg

@eirikb

jmls

@jmls

hmm. did _vti_ pascal case the friendly name, or did that use internal as well ?

jmls

@jmls

another odd question: I have a list id of 'dec72266-3364-4337-94eb-c6237d8dddca' where this list was created from a template. However, if I try and use this id as the guid , sp bombs out saying the it's not a valid guid (no shit sherlock ;) )

sooo, how can I reference the list using the id above ? Or is the id incorrect - and if so, how does that happen when the list was created from a template

jmls

@jmls

I can see from the sharepoint url this id is being used : layouts/15/ListEdit.aspx?List={DEC72266-3364-4337-94EB-C6237D8DDDCA}

Eirik Brandtzæg

@eirikb

I'm not sure what you mean, don't you use this : https://pnp.github.io/pnpjs/sp/lists/#get-list-by-id ?

jmls

@jmls

yes, I do - but the actual list id is dec72266-3364-4337-94eb-c6237d8dddca - which when I try and use get-list-by-id it falls over complaining that the id is not a guid

Eirik Brandtzæg

@eirikb

Well it's not. You say this is the ID, but you only think this is the list ID because that is the ID in the template?
You can print all IDs to see the actual id.
Something like console.log(await sp.web.lists.get())

jmls

@jmls

so, if I have this code

        const result = await sp.web.lists.getByTitle(title)();
        console.log(result);

I get this result

[snip}
  FileSavePostProcessingEnabled: false,
  ForceCheckout: false,
  HasExternalDataSource: false,
  Hidden: false,
  Id: 'dec72266-3364-4337-94eb-c6237d8dddca',
  ImagePath: {
    __metadata: { type: 'SP.ResourcePath' },
    DecodedUrl: '/_layouts/15/images/itgantt.png?rev=43'
  },
  ImageUrl: '/_layouts/15/images/itgantt.png?rev=43',
  IrmEnabled: false,
  IrmExpire: false,
  IrmReject: false,
  IsApplicationList: false,
  IsCatalog: false,
  IsPrivate: false,
  ItemCount: 2032,
  LastItemDeletedDate: '2020-11-26T08:48:38Z',
  LastItemModifiedDate: '2020-11-26T10:50:47Z',
  LastItemUserModifiedDate: '2020-11-26T08:51:26Z',
[snip}

the Id field definitely starts with a "dec" ..

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