Hi,
In our company we are using a custom page type ProductionPage which is now need to be modified and include blogs. I am using Silverstripe Blog with ProductionPage

All the new Production page created should include blogs and the old Production page will show in the old format still.

Then problem here is ProductionPage type is referenced on other Page Types to generate reports.

I have two ideas in my mind and I am following one. Is that right way to do

1) Create a new Page Type ProductionBlogType extend BlogHolder and merge with DataList referenced in other pages types.
2) ProductionPage extend BlogHolder and choose templates to display. All the old pages will be set by default to old template .

Please Advice.

Thanks
B L Praveen

If I get you correctly, I might go with 2) and maybe create an index() function that renders with one of two templates depending on the creation date - or maybe on a UseBlogTemplate boolean that you set to default = true for new BlogPages? Reason being that this just changes the ProductionPages, as per the request, and leaves everything else intact...

Yes you right , Later if I need to move away to create one more template. Then how do I still show the page with the blogs If it extend something new

@martimiz advice me if it is still possible to renderWith different templates. If we keep on changing the page and extending new page types

My answer was based on the specific situation, where you wanted to update the appearance for new ProductionPages but not influence existing pages. Reason: the ProductionPage was already referenced throughout other code...

Normally you would create new pagetypes if you wanted different layouts/functionality.

Having said that, if you want to stay with multiple templates for one PageType, you could easily use a 'TemplateToUse' kind of field in the database. Maybe feed it with a dropdown.

Or, if you want to use a new template from a certain point in time, use a 'ProductPageTemplate' setting in the SiteConfig, and add that to the page when it is newly created - onBeforeWrite, if empty($this->ID)

So many ways :)