QGIS – Managing Multiple Attribute Form Views

fields-attributesqgiswidget

In QGIS 3.18. There are 3 ways of visualizing attribute information that I am aware of:

The attribute table
the Identify Features box
the Form view (accessible via either the attribute table or the Identify Features box).

Changing the settings in Layer Properties–>Attributes Form determines the visualization settings for all of the above, with only minor exceptions (for example, fields set to "Hidden" in Widget Type will still be visible in the normal view of the Attribute Table, but other Widget types will in fact change the field's appearance there).

If the above is correct, my question is the following:

Is there any way of switching back and forth between full view (the default view with all fields visible and no widgets or constraints active) and the designed view (with widgets, constraints, and hidden fields)?

If this is allowed by any of the 3 views above, or by a plugin, or by an existing code that can be easily executed, I am unaware of it, but it would be very helpful for data entry situations where 95% of the data will occur in only just a few fields ('designed view') but the occasional 5% may necessitate access to the full view with all fields.

(Note: I have 100+ fields so I'd rather not go back to Attributes Form and unhide each field I need one by one.)

Best Answer

You can have two tabs, one with just a few fields and the other one with all of them. Select the fields to be part of a tab and move them over the "tab" entry (not just below)

Note that when the attribute table is opened, you can switch between form view and table view by clicking on the lower right icons

Related Solutions

QGIS – Using NULL for Attribute Form Constraints with Mergin Maps

It does not work the way we imagined. We falsly assumed that the return-value from the expression nullif("interior_observed", false) would be assigned to the field content. My guess now is that the return-value is only evaluated as a boolean, merely to decide if the field is valid.

To assign a field value, you need to use the Default value of the widget.

It's a bit messy but the following, finally, works for me (that is, in QGIS):

A. In the egg_number widget:

Add this Constraint expression:

if("interior_observed"=false and "egg_number" is null, true, false)
OR
if("interior_observed"=true and "egg_number" is not null, true, false)

Tick the Enforce constraint checkbox
Add this Default value expression:

if("interior_observed"=false,NULL,NULL)

  *This looks weird, as it always returns NULL, but I think this is needed
  so the value is re-evaluated and re-applied on each update. (Just
  guessing)

Tick the Set Apply default value on update checkbox

B. On the interior_observed widget:

Untick the not null constraint.

QGIS – Changing Attribute Font Color in QGIS Form

I guess this will be a bit tricky to solve without a bit of effort. The only two things that come to my mind is using a ui-file designed in QT-Designer instead of the drag/drop form or a custom python function in the attribute form.

The second idea is described here:

Example Code for a Field "Name" as Combobox in the Form:

from qgis.PyQt.QtCore import *
from qgis.PyQt.QtGui import *
from qgis.PyQt.QtWidgets import *
 
nameField = None
myDialog = None

# based on https://woostuff.wordpress.com/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/ 

def openForm(dialog,layerid,featureid):
  global myDialog
  myDialog = dialog
  global nameField
  print(dialog.children())
  nameField = dialog.findChild(QComboBox,"Name")
  changeColor()
 
def changeColor():
    nameField.setStyleSheet("color: rgb(255, 0, 0);")

The downside of this approach is that you have to activate Macros in QGIS what I personally don't like due to security reasons, especially when opening QGIS projects from someone else.

Update1: If you want to style all Comboboxes in your form you can use:

from qgis.PyQt.QtCore import *
from qgis.PyQt.QtGui import *
from qgis.PyQt.QtWidgets import *
 
# based on https://woostuff.wordpress.com/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/ 

def openForm(dialog,layerid,featureid):
  all_combos = dialog.findChildren(QComboBox)
  for combo in all_combos:
    combo.setStyleSheet("color: rgb(255, 0, 0);")

Best Answer

Related Solutions

QGIS – Using NULL for Attribute Form Constraints with Mergin Maps

QGIS – Changing Attribute Font Color in QGIS Form

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