how to prevent updating a field in CakePHP 3 beforesave()? - forms

In my form, if an input field is not changed, I don't want to update that particular field in database. How can I achieve this in beforesave() ? I tried $entity->unset($fieldName); but that doesn't work.
UPDATE:
In my form, for one filed, I am saving encrypted data in database, and in beforeFind(), if this field is not null in database, this input is set to "*** ***". My encryption code for this field is in beforeSave(). I want to update this field only if it is not "*** ***".


my code is working fine when $entity->unset($fieldName); changed tounset($entity->$fieldName);

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Getting current item ID in SharePoint Infopath form

Can we get the current item ID value while submitting the data in InfoPath form.
I need to use this and concatenate the ID with other field value. Tired "Max(#ID) + 1" function but it wouldn't solve the problem.
I know it can be done using calculated column or workflow.
It needs to be done using InfoPath form ? Is it possible ?

You already figured it out yourself. Im assuming you are trying to use the ID in naming it.
Create a blank field.
Then add that field to your submission naming concat.
Create a receive data connection (assuming you havent) to that library.
On the Submit rule add the query action to that library and a set field action to set that new blank field with max(ID) + 1. Make sure Submit action is last.
That should do it unless Im missing something as I have used this many times!

oracle form ''you cannot update this record''

I have a procedure in which I get values from different tables and calculate a certain decimal number. After that i try to post it on a form text-field which is a database item (update and insert allowed on the settings of block and item). everything works fine but the result wont show on the item and won't save in the database field. I get the error
"you cannot update this record".
Can someone help? i have been working on it for two days now and can't find anything.

Did you check if your user has update access on the table?
Check also if there are database triggers on the table that prevents you from updating the record.

Access Form won't accept input in text boxes

So I have a form in Access.![acessform1][1]
Here are form properties
I got this database and have been making adjustments to the other forms. I gave the database back to the user and they reported an issue that this form is not acting properly, and the add order record function is not working anymore.
There's an Add Order Record button on the right side of the form that would usually add the record if the user manually entered input into some of the boxes. The old form you would have control of the values 1/0 for yes/no. You can enter text into the notes boxes.
This functionality doesn't work anymore, and I can't seem to figure out why. The form is identical to the original and no adjustments have been made except to the table that it pulls data from.
So the symptoms are:
User input is not accepted in text boxes.
The find CP functionality works with the drop down and reflects the records accurately but I cannot update the fields.
Also, the fields CP_Ref and Invoice date don't let me enter data anymore.
Also the Add Order Record was giving me an error that The it could not find the record specified, but I since copied the original form back into place and that error went away.
I think functionality wise this button should save the record after a field is updated and should add a new record.
Seems like all the controls are locked on the page.
Here is the query that pulls the data when I click the button that takes me to the Order form.
SELECT DISTINCTROW CPOrders.Cust, Customer.NAME, CPOrders.CP_Ref, CPOrders.Slsman,
CPOrders.Date_opn, CPOrders.CPSmall, CPOrders.InvIssu, CPOrders.InvNo,
CPOrders.InvDate, CPOrders.DueDate, CPOrders.ETADate, CPOrders.Closed,
CPOrders.Cust, CPOrders.Name, CPOrders.BuyerRef, CPOrders.ToCity,
CPOrders.ToState, CPOrders.ToCtry, CPOrders.ToPort, CPOrders.Supplier,
CPOrders.Origin, CPOrders.Product, CPOrders.GradeType, CPOrders.NoUnits,
CPOrders.Pkg, CPOrders.Qty, CPOrders.TotSale, CPOrders.TotCost,
CPOrders.GrMargin, CPOrders.[Sale$/Unit], CPOrders.[Cost$/Unit],
CPOrders.OceanCost, CPOrders.OceanNotes, CPOrders.BLadingDate,
CPOrders.USAPort, CPOrders.FOBCost, CPOrders.FASExportVal,
CPOrders.InlandFrt, CPOrders.CommodCode, CPOrders.Notes,
CPOrders.ProjCust, CPOrders.ProjValue, CPOrders.ContainerNumber,
CPOrders.Vessel, Customer.TERMS
FROM Customer INNER JOIN CPOrders ON Customer.[CUST_#] = CPOrders.Cust
ORDER BY CPOrders.CP_Ref;

I ended up checking several locations for the answer to this.
What it ended up being was a primary key issue.
Essentially when I got the updated database I put them into new tables, effectively destroying the dependencies, relationships, and established keys.
I reverted back to the old tables and found out the form worked properly.
The issue ultimately was that the primary keys were not defined as needed for the table to be updated.

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I have problem with some form in Access 2010. In one of the fields (Amount) I have as a value expression =IIf([IsNull([Code]);1;2) . In the form the values 1 and 2 are shown correctly but when I try to save the newly created record I have an error: You have to fill the Amount field. Can someone tell me why the value is not visible when saving new record to database?

You need to use VBA code on the NewRecord and/or BeforeUpdate event to insert these values into this field/textbox. What you are doing here amounts to setting a value for Display only.

rails 3.2 check if hidden field has value while sending form

I have inside of a form one hidden field, which must be empty when the form is submitted.
Is any value in it, i want to set a flag in the database column.
How can i realize the check if the value of this hidden field is not filled?
Is it an issue for controllers or for models?

It is an issue for the controller. You want to check the value of that field in the create and update actions and store what ever you want to store there.