I have a flutter app that uses a real time database through Firebase. I know what I want to do but am so new to this that I am unsure of myself.
When a person scans the barcode, it shows up as a button. When they search for that item, it returns the proper attributes listed in the database. Great.
But what happens when the item isn't in the database? I want to create an if statement that is something like this in pseudocode:
Search for UPC:
If search results in null run "add barcode" method.
Create text inputs for all data required to add to DB.
If search results in hit, display data.
Run method that displays data
Related
Reviewing one of my Firebase schemas I can see that I have a couple of columns, but the auto-generated ID column does not show up:
However, when clicking on "Manage Content" the ID column can be seen:
The problem I have is that in other collections I make a reference to this collection by this ID, however, it doesn't pop-up in FlutterFlow to filter on:
Question: Is it possible to get the Auto-ID column in FlutterFlow?
As far as I know that is unfortunately not possible.
You could solve this by adding a column CopyOfId to your scheme.
You could then write a Firebase Function that triggers when you create a new document (https://firebase.google.com/docs/reference/functions/firebase-functions.firestore.documentbuilder.md?authuser=0#firestoredocumentbuilderoncreate). You could make this function copy the contents of the ID column to your own CopyOfId, making it accessible in FlutterFlow.
A deeper question is maybe for what use case you want this behaviour: why would you need to filter on an autogenerated ID that you do not know the value of - and that you can't access - in FlutterFlow? If we know your use case, there is probably another way to achieve what you want to achieve.
I am creating a database that contains Product information (tblProductInfo), a list of test methods (tblTests), and the results that the product gets (tblResults).
I'm adding forms so that a user can enter the results of a previous or new product. This information will be added once all the testing for that product is done. So, I would like to be able to show a list of the tests from tblTests, and have the user enter the results in a text box of some sort displayed directly next to the tests. I can't figure out a way to do so, where it will then save all the results that the user entered.
I have created a form with a subform, where the subform shows the 2 columns (tests and results) and when I change it to allow DataEntry, it gets rid of all the test names. I need it to keep the test names displayed, but allow entry in the results column.
Any ideas?
Below is a screenshot of an example of what I would like, although I need the Results column to be empty.
Create a continuous subform with only the tblresults as the recordsource, and for the header or each field of results use the related test as the label is how I would do it. Set allow additions to yes, allow edits to no allow deletions to no.
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.
So i have a form based on one of my table, in wich the id is generated by a function in the database, the username is get from the user in session using the variable :APP_USER and the date has a default value of to_char(sysdate). But the problem is that if I open the page the first time it does work without any error, when I change pages and return to the form I get the error
ORA-01403: no data found
Error Unable to fetch row.
And I don't know why.
If you use the standard fetching process you can check to see which column it uses to fetch a unique row and the item it will use the value from to do this.
If you get the 1403 error then this probably means you are trying to perform a fetch with the value of this page item set to a value which does not exist in the database.
Are you performing a computation on this item? Run plsql code on it? Change it anywhere?
When you get this error, then you can check the session state of the item by clicking "Session" on the developer toolbar. This will show you the session state values of the items, and thus you can see the value of the PK item on which the fetch will operate. If there is an id in there, you can verify whether this value is correct or not.
I am trying to work around a limitation that Filemaker 12 seems to have. In a value list that links to an ODBC attached SQL Server database, it doesn't display every piece of data. If there are 2 people with the same last name for example, it only displays the first person with that last name in the list. This is verified by the following in the Filemaker documentation (which I found after a lot of digging)
If the value list is defined to display information from two fields, items will not be duplicated for the field on which the value list is sorted. For example, if the value list displays information from the Company field and the Name field, and if the values are sorted by the Company field, only one person from each company will appear in the value list.
Portals on the other hand will find all the related data, I just don't understand how do something with the data once I get it in the portal. I essentially thus wish to use a portal AS my drop-down value list, and then to use it as I would have a value list (which is then to act as the key to do the rest of the lookups on the page to fill out the invoice.
The major issue here (other than this maddening choice Filemaker seems to make) is that the external file I am pulling the data from is an ODBC mounted SQL Server file, so I can't do something easy like a calculated field which would give me last name & " " & first which would make almost every person unique. Filemaker won't let me do that because it says I can't do that with a field that is not indexed. Any help would be greatly appreciated!
Assuming that we're starting with table MyTable and we're trying to get a ID from the People table for the selected person, which we'll call ID so that we can put it into MyTable::PersonID
Start by creating a new Table Occurrence of your People table and call it PeopleWhoCanBeSelected. If you want every person in the People table you can connect it to MyTable with the X relationship. If you want to show just a subset of the people you can build a different relationship.
Now, on a layout displaying records from MyTable you will make a portal showing records from the PeopleWhoCanBeSelected table.
In the portal put a button. When that button is pressed use the Set Field script step:
Set Field MyTable::PersonID to:
PeopleWhoCanBeSelected::ID
That should do it. You can make the button an invisible overlay on the entire portal record if you like, so that the user clicks on "the name" instead of "the button next to the name".
Now, if you want to pull additional data through to the MyTable record, you'll need to create a second Table Occurrence, called People with the relationship MyTable::PersonID = People::ID. Then you can get information on the specifically chosen person through that relationship.