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Controlling a Class on a specific 'Branch'
18 August 2011 at 6:57pm Last edited: 18 August 2011 6:57pm
Hi Guys. Ran into a problem and was hoping you guys could help.
I have a site that has an Event home page and then children page for that event.
I have a page on one of those children that is getting data from another page on this level using in one of my template files:
<% control Page(speakers) %>
...
<% end_control %>Unfortunately I realise this is only taking the URL segment of that specific page. Therefore if I create an new Event with the same 'children' structure it sill only copies the variables from the original Event and not the new one.
I guess what I am asking is how do I control values from a specific class which is on the same branch of my site? Or is there another way to do this?
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Re: Controlling a Class on a specific 'Branch'
18 August 2011 at 11:17pm Last edited: 18 August 2011 11:17pm
I'm not completely sure what you mean... Every Events page has a couple of children, and amongst those children there is one special data-child that (some of) the other children take data from? Something like this?
Event 1
-> data-child
-> child
-> child
Event 2
-> data-child
-> child
-> childIf I'm completely wrong, pleas elaborate
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Re: Controlling a Class on a specific 'Branch'
18 August 2011 at 11:50pm
You got it mate. For each event I want the child to only access a dataobject on the data-child class (as you call it) for the event that that perticular child is on. I've looked around an I'm guessing that it is some kind of dataobject::get() but I am just learning silverstipe an have not idea how to sort this! Help would be really appreciated!
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Re: Controlling a Class on a specific 'Branch'
19 August 2011 at 2:53am Last edited: 19 August 2011 2:54am
There are many alternatives, this is just one: first make the datachild page recognizable, by creating a special pagetype 'DataChildPage' (or even by setting some $IsDataChild boolean).
Next in your Page_Controller (this will return one(1) DataChildPage that has the same parent as the current page):
function getDataChild() {
return DataObject::get_one('DataChildPage', 'ParentID = $this->ParentID');
}Next in your template something like:
<% control DataChild %>
Description <= or whatever
<% end_control %> -
Re: Controlling a Class on a specific 'Branch'
19 August 2011 at 3:11am Last edited: 19 August 2011 3:24am
Amazing! Thanks! So once i bring in the <% control DataChild %> ... <% end_control%> I will have access to the dataobjects that are within that page?
Once last thing. I have the following code on another page that I stole from a tread on here which works great. (this is not in the page controller incidentally):
function ShowForm(){
$get = DataObject::get_one('SiteTree', "URLSegment = 'order-form'");
return new UserDefinedForm_Controller($get);
}I can change this like so to achive the same effect as your code above? Would I have to place this in the controller?:
function ShowForm(){
$get = DataObject::get_one('orderFormPage', 'ParentID = $this->ParentID');
return new UserDefinedForm_Controller($get);
}Thanks martimiz. I've been stressing about this all day and you have made me face life again. haha!
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Re: Controlling a Class on a specific 'Branch'
19 August 2011 at 5:40am Last edited: 19 August 2011 5:59am
Hi Ive tried the code martimiz.
This:
function getDataChild() {
return DataObject::get_one('SpeakersPage', 'ParentID = $this->ParentID');
}And when visiting the page I'm getting a synax error:
[User Error] Couldn't run query:...You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '>'ParentID')
Can you help?
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Re: Controlling a Class on a specific 'Branch'
19 August 2011 at 6:51am Last edited: 19 August 2011 6:55am
Oops, sorry - a single-quote error
function getDataChild() {
return DataObject::get_one('SpeakersPage', "ParentID = '$this->ParentID'");
}As for your other question, I would think so once the 'quote issue' is fixed... [EDIT] but if you're not on the current Page controller, it won't work. You'd need to obtain the current page's ParentID one way or the other. Where's that function located?
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Re: Controlling a Class on a specific 'Branch'
19 August 2011 at 6:54am
OK so multiple kudos to the IRC lads (scpi)
I got a working function:
function getDataChild() {
return DataObject::get_one('SpeakersPage', "\"ParentID\" = " . $this->getField("ParentID"));
}Many thanks.
Now I'm trying to extend this type of function slightly:
I used to have this: (which worked perfectly)
function ShowForm(){
$get = DataObject::get_one('SiteTree', "URLSegment = 'brochureform'");
return new UserDefinedForm_Controller($get);
}I don't want to strict-type it to a URL segment so I'm trying to say get page WHERE page has the same 'parent id' but AND $Title = 'Brochure Form'
function ShowForm(){
$get = DataObject::get_one('UserDefinedForm', "\"ParentID\" = " . $this->getField("ParentID"). " AND \"Title\" = " . $Title->'BrochureForm'));
return new UserDefinedForm_Controller($get);
}But sadly it doesn't work. Any ideas why? I get no error message just a blank page. Even in dev mode.
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