Questions tagged [data-objects]
93 questions
13
votes
5 answers
Refactoring large data object
What are some common strategies for refactoring large "state-only" objects?
I am working on a specific soft-real-time decision support system which does online modeling/simulation of the national airspace. This piece of software consumes a number…
![](../../users/profiles/83695.webp)
andersoj
- 20,778
- 6
- 59
- 72
7
votes
1 answer
Create a DataObject to build table rows and columns in SilverStripe
I'm trying to do something very different for a SilverStripe site: on several subpages are tables of data, and these tables each have their own set of column headers, and some tables have more columns than others. I want to avoid building out tables…
![](../../users/profiles/2170410.webp)
Dejsa Cocan
- 1,418
- 2
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- 45
7
votes
3 answers
How to define difference between business model and a data model?
I see the term often used as if there is a concrete distinction between the two when discussing MVC for OO languages. From what I get from context it is that business models perform an action to mutate the data models. Is that a correct way to…
![](../../users/profiles/259757.webp)
startoftext
- 3,632
- 4
- 36
- 48
6
votes
1 answer
Silverstripe 3.2: How to add and update Dataobjects in a frontend form dynamically?
Example: I have Members (who can login and update their data) who have one or many qualifications. So I have a DataObject 'Members' and a DataObject 'Qualification' with a has_one/has_many relationship.
Something like this:
class Qualification…
![](../../users/profiles/2214888.webp)
iraira
- 315
- 2
- 13
4
votes
3 answers
Java Design: dealing with data objects used by many classes
First, a brief description of the library that brought this up:
I have a library that listens continuously on a provided serial port, reading in blocks of bytes and passing them along to be processed in some meaningful way (details aren't important…
![](../../users/profiles/338661.webp)
JDS
- 1,173
- 3
- 13
- 26
3
votes
1 answer
DataObject.GetDatapresent with subclass
When I call this method DataObject.GetData(typeof(ItemType)) from an instance of a subclass of ItemType the method returns null... How can i get the data from the subtype?
Thank you
![](../../users/profiles/1117427.webp)
Giacomo Tagliabue
- 1,311
- 2
- 11
- 28
3
votes
2 answers
Silverstripe 3.2 - How to manage different lists of the same Dataobjects in ModelAdmin in different tabs
I'd like to manage different filtered lists of the same DataObject in ModelAdmin. I have the DataObject "Message" which has a SentbyID and a SenttoID. In ModelAdmin I want to manage two lists. One list with all messages with a certain SentbyID and…
![](../../users/profiles/2214888.webp)
iraira
- 315
- 2
- 13
3
votes
1 answer
Data Model Definition Standard in JavaScript/Node
I recently started programming in JavaScript (Server side) and Node.js. I come from Java background where there is a concrete standard on how you define Data Object, which is Java Bean. Do we have any such standards in JavaScript/Node on how we…
![](../../users/profiles/3477154.webp)
Prabhash Rathore
- 619
- 8
- 17
2
votes
1 answer
How to build data object in browser?
I want to know that can we build a data object using jquery/json, which only exist in the browser like we have session object at server side?
The reason for having a data object is that I am providing different layouts for users so they can…
![](../../users/profiles/690873.webp)
Safran Ali
- 4,359
- 9
- 37
- 57
2
votes
2 answers
PHP PEAR/DataObject equivalent to Rails' easy ActiveRecord finding functionality
In Rails, say a blogging application, given a particular post object you could get the name of the author of the post doing something like:
post = Post.find(1)
author_name = post.author.name
Is there a PHP equivalent using DataObject, something…
![](../../users/profiles/249543.webp)
jefflunt
- 32,075
- 7
- 80
- 122
2
votes
1 answer
How to yield a nilable shared object in Chapel?
Currently, I am working on Chapel Data Objects and I am facing some issues. I have a class named Row which can be nil.
I have these three methods:
override iter these()ref {
for row in this.fetchall(){
yield row;
}
}
…
![](../../users/profiles/12098923.webp)
Krishna Kumar Dey
- 41
- 6
2
votes
1 answer
Silverstripe 3.2: How to export db fields of only one Dataobject in a CSV file?
I know there is a GridFieldExportButton which exports all the data of a GridField. But what I want is a custom Button which exports all the $db fields (ore just a few of them) of only ONE DataObject in a CSV file and download it. So I want this…
![](../../users/profiles/2214888.webp)
iraira
- 315
- 2
- 13
2
votes
1 answer
SilverStripe 3: How to display the URL Segment / Page info of a DataObject
I'm getting all my DataObjects from a specific class and displaying them randomly on another page. I need to access the URL segment of the page they belong to. How do I do this?
I've tried, $URLSegment $UP.URLSegment $Parent.URLSegment etc which I…
![](../../users/profiles/2409791.webp)
pinkp
- 735
- 2
- 8
- 29
2
votes
1 answer
DataObject + TranslatableDataObject + ModelAdmin
Setup: SS 3.1.13, Translatable 2.0.8 and TranslatableDataObject dev-master.
I have two DataObject classes: "Facility" ($has_one) and "FacilityType" ($has_many) which I chose to be managed in ModelAdmin (as they are global properties of the site…
![](../../users/profiles/776686.webp)
user776686
- 5,924
- 9
- 52
- 94
2
votes
0 answers
nextRowset() do-while loop causing 500 error
I'm creating a web service for a mobile application in PHP using PDO database calls. The problem code is below:
// Prepare Stored Procedure Call
$query = "CALL " . $_GET['proc'] . '('.implode(', ', array_keys($paramArray)).')';
$stmt =…
![](../../users/profiles/2217822.webp)
wUmpage
- 153
- 1
- 12