[HowTo] Internal item switch to control item/field output

I have a type "Partnter" which has a web-link field.
In the same type I have a select field, which allows to select "Internal" or "External"

I have another type "Project" where I chose related items of the "Parnter" type.

At the "Project" page I output the web-link field via the universal module (to have more control over the output).

Depending on the state of the select list (Internal or External) I want to control the output either the link to the "Partner" page, or link to the partner's web-site.

My suggestion is to check the switch status in the template (module one, or item one) and to set the output I need. Is this the right approach? Is there any better way?

Hello, form what I know, and as already been requested to have connected fields, we are doing a complex site right now and we have the same problem and don't know how to solved this.

We want to provide different field depending on the user choice.

The solutions we found is via different TYPES of content and there you associate different fields to different types.

Because the only place in the submission form where the fields update is in the TYPE of content select. This way the user will have to make the decision very early in the form. Does this makes sense?

Lets take gruz EXAMPLE

You need a weblinks field and you want to make it use the value of a select field, so that it behaves/displays different things in item view AND-OR in item edit form TOO.

In this case you will need to
1. Duplicate weblinks field to a new field type e.g. tweblinks
2. Create a tweblinks field named twblnk
3. Create a select field named selwbtype
4. Alter tweblinks field XML parameters file to add a text parameter named "relselfield" where you will enter the name of the select field in our case it will be selwbtype
5. Alter functions onDisplayFieldValue() and onDisplayField() of tweblinks field to retrieve the value of the field named connected_selfield for the current item (current item is $item) 6. Use value $rsvalue to alter the behavior of the functions onDisplayFieldValue() (ITEM VIEW) and onDisplayField() (ITEM EDIT FORM)

Regards