Help! How to make an option "Save to Print".

Okay, so I admit, I know just enough to be dangerous, but not effective ColdFusion.

I developed a database of obituaries for a client whose name, first name, Date of death, Source, Source, Date, etc.. Each record has a unique ID as the primary key.

The user can search for records that meet different search criteria. The customer wishes the end user to be able to save documents to a record 'impression' that would be store them until they are ready to print all records. (The client is a library so they want to save the print paper).

I tried to address this problem in several ways, but without much success. I think I can be limited by my knowledge of the client and session variables or structs and arrays.

Because of my lack of knowledge of the structures and arrays, I set up a table in my database called list print and simply stored the ID of the record when the end user that is added to the list. The problem, however, is that if mutiple users are using the database at a given time, the list will not exclusive to that particular user.

I need to know the most effective to allow the end user to add to the and delete the list of printed documents and then of course print registration and empty list, but do it in a way that several users on separate workstations could potentially make simultaneously without interfering with each other.

Any ideas would be very appreciated.

That's exactly why the session variables have been invented for this kind of situation, and so, you should leave the table in your database and use session variables. for example:

Try this code in a test page and it should give you an idea how to do this:









  • It is part of table #i # and its value is #session.printList #



It is a variable in the session scope which is unique to the user, and then this variable, we create a table. A simple table is NOT complicated, don't be worried about this. A table, is literally a list. We make lists all the time in everyday life and it's the equivalent of programming. He gives us an orderly way to store and play with the elements.

The example shows the creation of the session with the table variable... I also shows filling the table using arrayAppend... try adding some of your own and refresh the page. You will then see in the CFDUMP what this variable.

Finally, I play with the table with a simple CFLOOP... just loop over the list on the screen.

Good luck
Mikey.

Tags: ColdFusion

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