Tim,
I have been creating a LOT of custom constants recently (removing IP
vars used as constants)
[sidebar - I am down to < 40 ipvars from over 550]
Yes, it is a minor PITA to have to restart, but if you 'watch' the
loading process 4D loads the custom constants BEFORE running almost
everything
On Aug 1, 2018, at 9:49 AM, Jeremy French wrote:
> Try creating 2-tables with a one-to-many relation. Say "Owner" (one table)
> and "Item" (many table.)
> In the Relation Inspector, name the relations:
>
> Many to one as "theOwner"
> One to many as "theItems"
>
> Don't forget to restart 4D
Hi Julio,
Have you looked at:
http://doc.4d.com/4Dv17/4D/17/dataClassAttributerelatedDataClass.303-3884018.en.html
Relation attributes have 3-properties:
1) kind
2) name
3) relatedDataClass
The "kind" property tells you the type of relation: one or many.
The "name" property is the name you
I suppose it could be "nice" to have such a feature,
indeed there were hints on the forums that it is in the pipeline,
but I think it is important to stop and consider why the feature is not
available at this point in time.
code is never tokenised in ORDA.
as developers, we should embrace it,
Interesting Miyako, but that only tells me I have a relation attribute and that
relation’s name. It does not tell me if it is a relations between A and B, or A
and C.
Is there a way to get that?
And there is one key member function missing that tells me to which Table an
Entity or Entity
or, DA.
C_COLLECTION($one;$many)
$one:=New collection
$many:=New collection
For each ($attribute;ds.Table_1)
$kind:=ds.Table_1[$attribute].kind
Case of
: ($kind="storage")
: ($kind="relatedEntity")
$one.push($attribute)
: ($kind="relatedEntities")
$many.push($attribute)
End case
End for
Thanks Lahav, that works.
I’m using an Entity Selection to display on a Listbox and I needed to include
some related field columns.
Using relation names did the trick.
This is all generic code written a long time ago and I’m upgrading it to
V17+ORDA.
As a thank you for the tip, here is some
Hi Julio,
You need to name your relations, which then shows up as an entity in your
collection, containing the related data.
Assuming a table named A and a relation to table B named My_B_Link, after
loading a selection of table A into collection My_Col, you can get your related
data from
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