I am new to Thymeleaf and HTML5.
I have a variable order number of data type long.
There is an input text field in the HTML for searching order number (assigned to order number variable), which always initialise to zero everytime when we load the HTML page.
Also, I am getting the error when I manually empty the filed and submit the form to fetch record from database.
My requirement is to have this field empty because this is an optional field. It can be zero/null/doesn’t contain any value.
Sample Code Snippet: <input type=“text” th:field=${order.ordernumber}>
Please advise on how to get this order number variable (long data type) without any default value being set.
It depends on your model. If there is 0 and this is the default for long this will shown in the view. If the ordernumber can be null or empty you should use Long.
This is only an assumption. To give you a detailed answer you must provide more information.
Related
I am passing a unique ID as parameter in SSRS report. In the source table, unique id does not contain dashed. However, the user may insert Unique ID including dashes "-" and in some cases without dashes. Is there a way that we could remove dashes from the parameter.
For example, unique id 3120-20268-8 is stored in table as 3120202688. How I could retrieve if user pass multiple values with or without dashes in the SSRS Report.
When is used below query, it gives record against single value only. However, gives error when more than one values are provided.
select * from Table
where Unique_ID in (REPLACE(#Unique_ID,'-',''))
For more than 1 values, it gives errors mentioned below:
The replace function requires 3 argument(s).
Query execution failed for dataset 'ATL_List'.
Thanks
One of the simplest mechanisms for this is to create an expression based parameter to hold the sanitised input. This parameter would be hidden so the user is not aware of it, but the rest of the usage of the parameter is the same.
NOTE: You could do something similar with a query based default value, but this case is easier to do via a simple expression
Single Value Parameter
Create a new parameter:
set it to hidden
Set the default value expression:
=Str(Parameters!inputID.Value).Replace("-","")
Multi-Value Parameter
This is only slightly trickier, in the expression we can join the selected values together into a CSV string, then process that value and then split it back:
Set the parameter to multi-value, but still hidden:
Set the default value expression:
=Join(Parameters!inputID.Value,",").Replace("-","").Split(",")
Without going to detailed, if we made the sanitised parameter temporarily visible, just to demonstrate the conversion, it should look like this:
The parameter MUST be hidden!
NOTE: DO NOT make your sanitised parameter visible as in the above screenshot in your deployed report! Doing so will mean that it will not pickup changes made to the input value after it has rendered the first time.
remember that we have exploited the default value, we haven't arbitrarily defined en expression to always execute.
The output when the parameter is hidden is calculated when the report is rendered, it's just harder to visualise the behavior in this static post:
In your DataSet query you would just use the sanitised parameter:
SELECT * FROM Table WHERE Unique_ID IN (#sanitisedMultiValue)
You should be able to use the replace function in your report to format the parameter value after it has been entered, something like the below
replace(Fields!Paramater.Value,"-","")=FieldinYourTable
I have an ID field with an AutoNumber Data Type that has a custom format defined in the Field Properties (A-00001, A-00002, etc).
I wanted to look up the formatted value and display it in a form textbox control.
ServiceNumber_entry = DLookup("ServiceID", "ServiceRecord", "SNID = '" & Forms!ServiceEntry!PartSN_entry & "'")
Using the line above, it returns just the number value and not the full formatted value (i.e. 1 instead of A-00001). What am I missing?
Existing comments all contain good information, but it can be useful to put it all together. The comments also failed to describe the context in which Access automatically copies and applies properties like Format, so that the comments (even if correct) might seem contradictory. My explanation is a bit verbose, but hopefully avoids further confusion.
The purpose of the Format property for any value in Access is to define how the data is displayed. This is true of a table column presented in a datasheet or a textbox control on a form. The Format does not define how values are stored, either in storage or in memory. The same value could be formatted and displayed differently without affecting the underlying stored datum. In this case, the Autonumber values are really Long Integer values. (They are not stored with a preceding "A-", which would require the values to be strings and would ruin Access's ability to automatically increment the values.)
Access attempts to provide a consistent view of the data and reduce tedious programming details by automatically copying the Format property to queries and form controls, just as it does with many other metadata properties. For instance, if you drag the AutoNumber field onto a form in design mode, it will automatically copy the Format string from the column to the TextBox control's Format property. In contrast, if you include the same column in a query, the query's column property sheet also has a Format property, but it will remain blank by default. However, when the query is executed, it will indeed be displayed with the format defined on the table column. This behavior does not mean that the data values themselves "have a format", rather Access is just doing its automatic work of looking up default formatting values from the table definition and applying it to the query's output. (It can do this if there is a simple one-to-one table column to query column relation, which is the usual case for queries.)
DLookup() is a Visual Basic (VBA) function. It is necessary that such functions handle the "raw" data independently of metadata, like Format (or Caption, Text Alignment, etc.). For coding purposes, a programmer expects to retrieve the actual long integer value from the column, not a formatted string value like "A-00001". The function will not only skip the format, the formatting information is completely dropped from data values. In a programming environment, data can be combined and manipulated and the concept of "format" becomes lost and/or meaningless. Even though in this case it might seem obvious, DLookup makes no assumptions about what you're going to do with the data and so just returns the integer values.
If your form TextBox control was not originally placed on the form specifically for the AutoNumber field, Access would not know to the copy the Format property. It would just display the integers from DLookup() as basic integers. However, you can manually set the TextBox's Format property to match the table column's Format property exactly to get back the expected values.
How can I limit the number of characters a user can type for a parameter in SSRS?
For example, if the Data Type is set to TEXT, how to limit the user to type only 6 characters after Default value of "CL/" OR limit to total of 9 characters.
Unfortunately you can't perform validation as people write values, you can only handle them when the report is run. You can however use Code behind the report to perform some validation on your Parameters at run-time. Based on the result of this you can then either display the required data to instead return an error message.
To insert some code behind you right click the area around the report, Choose Report Properties, then Code.
Enter something like this into the code panel
Function Validate(param) as Boolean
If len(cstr(param)) <= 9 Then
Return"True"
Else
Return "False"
End if
End Function
You can then refer to the result of this from a text box that displays an error as follows
Right click the text box and set the visibility to be
=iif(Code.Validate(Parameters!myInput.Value) = True, True, False)
Then if you enter a string of 9 or fewer characters you will get an error that you can use to inform the user of the proper format of your desired input string.
Instead of just making text boxes visible/invisible, you could also apply this to rectangles that store your report information. Also, you can use visual basic coding to alter the Code behind to perform more complicated parameter validation to check for you "CLI" string for example.
I hope this helps, let me know if you require further help.
So i'm testing sample code and I pasted some online text into a field and i'm getting an error and I have no clue why. Here is the entire method which is throwing the error:
EDIT the error is coming from the assignment. However, there is no
error thrown on any number of other input strings.
CurNodeName = RTrim(CurNodeName)
ADORecordset.Fields.Append CurNodeName, adVarChar, 500, adFldMayBeNull
tempString = XMLValueDecode(CurNodeValue)
ADORecordset.Fields(CurNodeName).Value = tempString
...
Here is the string which is being passed into the method:
Most of the methods of the DoCmd object have arguments ? some are
required, while others are optional. If you omit optional arguments,
the arguments assume the default values for the particular method. For
example, the OpenForm method uses seven arguments, but only the first
argument, FormName, is required. The following example shows how you
can open the Employees form in the current database. Only employees
with the title Sales Representative are included.
Here is the exact error description:
Multiple-step operation generated errors. Check each status value.
That is the whole story, and i just don't understand it. Can you tell me why this error is happening?
(From a comment to another answer:)
There must be some critical difference between adVarChar type and adVarWChar that the text being set responded differently to.
It was many versions ago (Access 2000, and the release of Jet 4.0) that Text and Memo fields in Access were upgraded to handle Unicode. From that point forward, Text fields and parameters needed to be referenced as adVarWChar (with a maximum length of 255), while Memo fields and parameters needed to be referenced as adVarWChar or adLongVarWChar (with a theoretical size limit of approximately 1 billion characters).
It is unclear why the code in the question would work for some strings and not others, but certainly using the correct ("W") data type would be a prerequisite.
Have you checked curNodeName for type? If you've passed a numerical type to append, it might be converting it to string implicitly when naming the field to avoid indexing errors, if that's the case, (and you are inadvertently trying to assign that string to the value of a field with an index that is not currently in the collection,) you might be throwing that multi error because you'd be trying to assign a string of a length longer than the default length to a field with an index way outside the current collection (either of which error alone might throw a specific exception, but depending on the way the parser is handling those terms, it might evaluate each side of the assignment for validity before trying to assign an error code.)
What I'm wondering is if you've debug.printed (or just counted, depending on collection size) the field names and indices as matched pairs and tried assigning the string to your field by index instead of name?
I have an Access form with a textbox bound to a currency field in a table. As expected, anything other than a numerical entry generates an error. Occasionally, users need to enter several amounts and have those added together and the result entered into the currency field.
To accomplish this, I would like users to enter an equal sign followed by a valid arithmetical string which would evaluate to a number exactly as they would in an Excel cell. For example, if a user enters "=5.31+2" I want the field to evaluate to "7.31" and use that as the value passed to the table when the record is updated or saved. The current workaround is to use the Calculator application but that isn't the ideal solution.
I tried the following code and applied it to both the BeforeUpdate and OnLostFocus events of the textbox (named "tbxTotal_Paid") but neither worked. I simply got "The value you entered is not valid for this field" error.
Dim charCt As Integer
Dim evalStr As String
If Left(tbxTotal_Paid, 1) = "=" Then
charCt = Len(tbxTotal_Paid)
evalStr = Right(tbxTotal_Paid, charCt - 1)
Me.tbxTotal_Paid = CCur(evalStr)
End If
Is this simply applying the code to the incorrect event or is this a coding issue? Any assistance is appreciated.
For me your code looks fine but you might put it in the wrong place.
Like you said Acess is giving you this error because the textbox is bound to the currency-field. So it will never accept non-numerical values because the value-checking code fires even before the before_update-event.
I think the best solution would be to hide your bound text box using Me.tbxTotal_Paid.Visible = False and creating a surrogate textbox which is not bound. You put your code in the beforeUpdate-Event or Change-Event of your surrogate. At the end you should check your final result with IsNumeric(). That way your surrogate textbox writes only correct values to your bound hidden textbox and only numbers arrive at your table.
An alternative would be to change the currency column to a string-field but this would not be wise because of potential wrong data in your database.