Re: How to lookup a value within an object within an object
Thanks for the response Kirk. > On Oct 25, 2019, at 14:45, Kirk Brooks via 4D_Tech <4d_tech@lists.4d.com> > wrote: > > OB Get works on any object so you could call > > $value:=OB > Get(myObject.data.object.billing_details.address;"postal_code";Is text) > > and it will work because myObject.data.object.billing_details.address is an > object. As you point out, dot notation does work as I expected it should. I just had the wrong syntax for OB GET. > It's handy to break up objects like that if you are doing more than one > thing with them. I might do something like: > > $adrs_obj:=myObject.data.object.billing_details.address > > so that > > $value:=$adrs_obj.posta_code > > And this also makes it easier to update the address object: > > $adrs_obj.posta_code:="new zip code” > Thanks for pointing that out. Assigning the object reference to a variable makes maintenance much easier. > Doing that also updates myObject and illustrates why objects and references > to them are so great. You can perhaps see that having a standard object for > all the addresses you use would allow you to write some methods for working > with them, or verifying them, that take an address object as the parameter > and modify the contents. Think looking up the lat/lon, correcting spelling, > verifying, etc. > > My_address_verify($adrs_obj) > Thanks again. Tom ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
Re: How to lookup a value within an object within an object
without an additional component/plugin
I would write a routine to extract the object, then no matter how deep
or how your current configuration changes you can extract it.
I have only thought about this for a few moments but...
something like:
Get_object(Source_Object;Property) -> object
Get object properties with types
if the object/property desired is not at the first level
for every object
Get_Object(ob get(Source_Object;Next_Object);Property)
else
$0:=ob Get(Source_Object;Property)
end if
Chip
On Fri, 25 Oct 2019 13:58:10 -0700, Tom Benedict via 4D_Tech wrote:
> I’m new to objects. I have an object which holds a range of keys and
> values. Some of the values are objects. I figured I could just use
> the OB Get command with dot notation to reference a key in a nested
> object, but that doesn’t seem to be supported.
>
> Here’s my example:
>
> C_OBJECT(myObject)
>
> myObject :=
> "{
> "id": "evt_1FXWZKGX5QBs0BzAQsOMqk3f",
> "object": "event",
> "created": 1572024442,
> "data": {
> "object": {
> "object": "charge",
> "amount": 4275,
> "billing_details": {
> "address": {
> "city": "Burien",
> "postal_code": "98166",
> "state": "WA"
> },
> "name": "Willy Wonka",
> },
> "type": "charge.succeeded"
> }"
>
> If I want to get the value of:
>
> myObject.data.object.billing_details.address.postal_code
>
> I have to use:
>
> OB Get(OB Get(OB Get(myObject;"data");"object");”billing_details");”
> address");”postal_code”)
>
> rather than:
>
> OB Get(myObject;data.object.billing_details.address.postal_code)
>
> I see that Cannon created a dot notation component some years ago. Is
> that the only ‘easy’ way to do this or have I missed something?
>
> Thanks,
>
> Tom Benedict
>
> **
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Re: How to lookup a value within an object within an object
Tom:
Cannon’s OBJ_Module is a good enhancement to the native 4D commands.
--
Douglas von Roeder
949-910-4084
On Fri, Oct 25, 2019 at 1:58 PM Tom Benedict via 4D_Tech <
4d_tech@lists.4d.com> wrote:
> I’m new to objects. I have an object which holds a range of keys and
> values. Some of the values are objects. I figured I could just use the OB
> Get command with dot notation to reference a key in a nested object, but
> that doesn’t seem to be supported.
>
> Here’s my example:
>
> C_OBJECT(myObject)
>
> myObject :=
> "{
> "id": "evt_1FXWZKGX5QBs0BzAQsOMqk3f",
> "object": "event",
> "created": 1572024442,
> "data": {
> "object": {
> "object": "charge",
> "amount": 4275,
> "billing_details": {
> "address": {
> "city": "Burien",
> "postal_code": "98166",
> "state": "WA"
> },
> "name": "Willy Wonka",
> },
> "type": "charge.succeeded"
> }"
>
> If I want to get the value of:
>
> myObject.data.object.billing_details.address.postal_code
>
> I have to use:
>
> OB Get(OB Get(OB
> Get(myObject;"data");"object");”billing_details");”address");”postal_code”)
>
> rather than:
>
> OB Get(myObject;data.object.billing_details.address.postal_code)
>
> I see that Cannon created a dot notation component some years ago. Is that
> the only ‘easy’ way to do this or have I missed something?
>
> Thanks,
>
> Tom Benedict
>
> **
> 4D Internet Users Group (4D iNUG)
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> Options: https://lists.4d.com/mailman/options/4d_tech
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How to lookup a value within an object within an object
I’m new to objects. I have an object which holds a range of keys and values.
Some of the values are objects. I figured I could just use the OB Get command
with dot notation to reference a key in a nested object, but that doesn’t seem
to be supported.
Here’s my example:
C_OBJECT(myObject)
myObject :=
"{
"id": "evt_1FXWZKGX5QBs0BzAQsOMqk3f",
"object": "event",
"created": 1572024442,
"data": {
"object": {
"object": "charge",
"amount": 4275,
"billing_details": {
"address": {
"city": "Burien",
"postal_code": "98166",
"state": "WA"
},
"name": "Willy Wonka",
},
"type": "charge.succeeded"
}"
If I want to get the value of:
myObject.data.object.billing_details.address.postal_code
I have to use:
OB Get(OB Get(OB
Get(myObject;"data");"object");”billing_details");”address");”postal_code”)
rather than:
OB Get(myObject;data.object.billing_details.address.postal_code)
I see that Cannon created a dot notation component some years ago. Is that the
only ‘easy’ way to do this or have I missed something?
Thanks,
Tom Benedict
**
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