[com_fields] Define the catid for the mail fields

[laoneo]

Pull Request for Issue #16574.

Summary of Changes

When a "Contact - Mail" custom field is assigned to a category, then on the front only the fields in the contact form should be shown where the actual contact belongs to.

Testing Instructions

• Create a contact category A
• Create a contact category B
• Create a contact A for category A
• Create a contact B for category B
• Create a Mail custom field with the title A and assign it to category A
• Create a Mail custom field with the title B and assign it to category B
• Create a menu item for contact A
• Create a menu item for contact B

Expected result

• When opening contact A on the front only the custom field A should be shown below the contact form.
• When opening contact B on the front only the custom field B should be shown below the contact form.

Actual result

• When opening contact A on the front the custom field A and B are shown below the contact form.
• When opening contact B on the front the custom field A and B are shown below the contact form.

[ghost]

I have tested this item ✅ successfully on fc597d5

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/16666.}

[ghost]

@federone @jnk22 please test.

[sandstorm871]

Looking to test this & hopefully not a daft question ;)
Tested in 3.7.3b1 & 3.8dev

How do you add "Create a Mail custom field with the title A "
I see custom fields as expected for text, textarea, calenadra, etc but none more mail?

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/16666.}

[ghost]

@sandstorm871:

[sandstorm871]

I have tested this item ✅ successfully on fc597d5

Set up as per test instructions & saw the issue as per described.
After applying patch #16666 saw the expected result.

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/16666.}

[sandstorm871]

Ooh didn't know about that @franz-wohlkoenig Thanks.
Now successfully tested with patch #16666

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/16666.}

[ghost]

RTC after two successful tests.

[federone]

@franz-wohlkoenig thank you very much, have tested and works well.

Best Wishes,
Federico