I have a kind of login page where the user enters in data and based on that data it runs an sql query but I also need to have check boxes so the user can tailor these queries a little more and select only stuff they require.
Is there any way of having a check box then checking what the value of that is on a later form? Will I be able to pass it the same way I pass text?
<jsp:forward page="somepage.jsp">
<jsp:param name="empid" value="${(param.employeeid)}" />
<jsp:param name="recorddate" value="${(param.date)}" />
<jsp:param name="recorddate2" value="${(param.date2)}" />
</jsp:forward>
Also what data type does it pass am I after a boolean, string or integer?
Related
I am trying to use an HTML number input field to validate a one-time code a user has. The one-time code is a Django model attribute under the user model, with the user object passed into the HTML template. Currently it is set up as such:
<input type="number" name="auth_code" value="" min="{{user.auth_code}}" max="{{user.auth_code}}" onchange="this.setCustomValidity('')" onkeypress="this.setCustomValidity('')" oninput="this.setCustomValidity('')" oninvalid="this.setCustomValidity('This authorization code is incorrect.')" required />
If the user's code is 100000, and I enter 100001, I get the oninvalid message (as expected). However, if I delete a digit (or the whole number), I get a message stating "The value must be user.authcode." Clearly I don't want this value shown.
If I set any message in the onchange or oninput field other than ('') (i.e. ('Enter a code.')), I can't validate any code (correct or incorrect). I run into the "This authorization code is incorrect." message even when validating 100000.
How can I get around this?
I have few checkboxes in my template whos value is the id of database row. I am using AJAX to post these values back and forth.
{% for item in sale_order_items %}
<tr>
<td class="text-center">
<input type="checkbox" name="saleorderitem" value="{{item.id}}">
</td>
</tr>
item.id for instance renders to 1. Now what if the user changes the value from 1 to 2 in browser using "inspect" and submits the form. what can I do at the frontend or django backend to prevent this and check if the user is submitting the same values as intended?
This depends on many different things but to take you back to the basics: When you create a function in order to bulletproof it out of any errors you use type and value checks.
I would think the best approach to this is to add some back-end checks. The form values returned would have to adhere a set of rule such as a value threshold. If the value returned is beyond that threshold then that would mean that something has changed in the HTML.
You add a check if it fails then the back-end would return an error. In collaboration with front-end you refresh the page and return an error message. It might be really terrible UX but an average end user would never change values using their inspector.
The other alternative is to use javascript to detect any kind of HTML/DOM mutations or changes which I would advice against. Having values to be checked against specific criteria (using the back-end) is best as it foolproofs info passed on to your server against any change.
I found a solution, in this scenario django session variable can be used to store data between requests. When I load the form, I set the session variable to the required values, then on form submission, I check the submitted values with the values in session variable. And it works.
I have this problem:
I have 3 templates:
Search_user
Show_user
Edit_user
Whit the search_user I'm getting the name value with the post method, then I'll search the data in the db, save the data in an array called user and then pass the array to the Show_user template.
In the Show_user template I show the data with {{ user[0] }}, {{ user[1] }}...{{ user[7] }}, under this data I have a button that bring me to the Edit_user template.
But in the Edit_user template I don't know how to pass the previous data, I don't know hot to export data with the post method or any other methods.
A walk around could be <input type="text" name="surname" value="user[0]" required> but I don't want to show the textbox in the Show_user template.
You don't need to pass any data except some kind of user identifier (a number or a user name) to fetch the user back from the database when needed.
It can be done in multiple ways:
add it to the endpoint URL in the form action (/user/edit/<user-id>)
or use your web framework session to store the user identifier
or add the identifier to your templates as a hidden form field (type=hidden)
...
In any case you just need to get that piece of information (from the URL endpoint, from the session, from the form data...), use it to fetch the user from the database, then pass the user to the edit template.
If you're using a web framework just read the docs, this is a trivial use case that we'll be very likely well documented.
If you need more details, please, share a few code fragments.
i'm using SSMS and attempting to export the results of a stored procedure to a new excel file. The SP accepts an int parameter but I cannot find a way to call it in the query.
Latest effort-
EXEC sp_makewebtask
#outputfile = 'C:\Users\me\Documents\testing.xls',
#query = **ExportAsExcel** N'#id' = 123
#colheaders =1,
#FixedFont=0,#lastupdated=0,#resultstitle='Testing details'
Running the stored procedure results in two tables of data, which I need on separate sheets. Can any of you advise a better way to go about this? It doesn't even need to be automated, I just need to get the correct data. The sp name is bolded above.
Thanks for your time,
H
I suggest you split your stored procedure into two procedures that each respectively return a separate table and have those called to different worksheets.
There are a variety of ways to return data to Excel using SQL
Here is a favourite of mine from code by Joshua (you don't have to use the parameters):
Select the Data tab on Excel's Ribbon, then within the Get Exernal Data group choose the "From other Sources" drop-down. Then Choose "From Microsoft Query"
Within "Choose Data Source" pop-up box, select your SQL Server, then hit OK.
Close the "Add Tables" popup if necessary.
Click on the "SQL" button, or choose View > SQL to open the SQL pop-up editor.
Enter the following syntax: {CALL myDatabaseName.dbo.myStoredProc (?, ?, ?)}
For example: {CALL northwind.dbo.spGetMaxCost (?, ?, ?)}
Be sure to include the squiggly braces around the call statement. Each Question Mark (?) indicates a parameter. If your stored procedure calls for more or less parameters, add or subtract question marks as needed.
Hit the OK button. A question box should pop-up saying "SQL Query can't be represented graphically, continue anyway?", just hit the OK button.
You will now be asked for sample parameters for each question mark you included above. Enter valid parameter values for the data you are querying.
Once you have entered the last parameter, you should get some results back in Microsoft Query. If they look good, close Microsoft Query.
You should now be looking at an "Import Data" pop-up. Click the Properties button, which will bring up the "Connection Properties" pop-up.
Select the Definition tab, then select the Parameters button. You should now see a "Parameters" pop-up, where you can connect the parameter to a specific cell.
Select Get the value from the following cell, and then connect to an appropriate cell in Excel that will hold your parameter, by clicking the little box with the arrow.
If you want the data to refresh every time you change the cell containing the parameter, check the box stating "Refresh automatically when cell value changes"
Continue as above for the other parameters. When finished, click OK, to return to the Connection Properties pop-up. Click OK to return to the Import Data pop-up, and click OK again.
You should now have some data straight from your stored procedure.
You will end up with connection information similar to:
Connection info
And, if you use parameters from sheet then, for my example,
This isn't a direct answer to your question, but it is possible using Excel VBA and connections to connect to a SQL Server Stored Procedure, feed it parameters, and return the SP result set in Excel. Check out my article Microsoft Excel & SQL Server: Self service BI to give users the data they want for an image and code-heavy demo.
Good luck.
There's too much detail there to post in a single SO question, otherwise I'd do that here.
I develop SSMSBoost add-in and we have implemented the functionality, that allows you to export data to excel in 3 ways (including creation of several worksheets in one file):
You can export all result grids in one operation to "open worksheet" file format, which excel understands and displays correctly. This file format supports multiple worksheets.
to use it: right-click the data grid in SSMS and select "Script grid data"-> "Excel" template->All Grids->ToDisk.
You can also look inside the generated files to understand how it works. You can then implement same functionality in your stored procedure if you want to stay independent of add-ins. Sample XML is also provided below. (2 excel sheets with 1 column name and 1 value)
<?xml version="1.0"?>
<?mso-application progid="Excel.Sheet"?>
<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:html="http://www.w3.org/TR/REC-html40">
<ExcelWorkbook xmlns="urn:schemas-microsoft-com:office:excel">
</ExcelWorkbook>
<Styles>
<Style ss:ID="sH1"><Font ss:Bold="1"/></Style>
<Style ss:ID="sD1"><NumberFormat ss:Format="General Date"/></Style>
<Style ss:ID="sD2"><NumberFormat ss:Format="Short Date"/></Style>
<Style ss:ID="sD3"><NumberFormat ss:Format="Short Time"/></Style>
</Styles>
<Worksheet ss:Name="GridResults1">
<Table>
<Row>
<Cell ss:StyleID="sH1"><Data ss:Type="String">ColumnNameA</Data></Cell>
</Row>
<Row>
<Cell><Data ss:Type="Number">1</Data></Cell>
</Row>
</Table>
</Worksheet>
<Worksheet ss:Name="GridResults2">
<Table>
<Row>
<Cell ss:StyleID="sH1"><Data ss:Type="String">ColumnNameB</Data></Cell>
</Row>
<Row>
<Cell><Data ss:Type="Number">1</Data></Cell>
</Row>
</Table>
</Worksheet>
</Workbook>
You can also copy-paste data from SSMS Grid, right-clicking it and choosing "Copy selection as XML Spreadsheet (Excel)". Data will be copied preserving data types.
More advanced option is our "Post execution handlers" functionality. It allows you to run certain actions after query execution completes. You can schedule automatic export to excel file here as well.
Hope this helps, with, or without SSMSBoost ;)
I am currently trying to take a value from a drop down list, store it into a variable, and pass it into a controller's action result. When I run my code, the Index is supposed to store the value of the selected item in the dropdown box in the variable SelectedDistrict, then then go to the Query action. Query will take a variable of DistrictViewModel as a parameter and then use var school = getQuery(variable.SelectedDistrict) to go into the function I have. In the function however, it's saying that the variable sd is null whenever i debug. Maybe the value from the drop down box is not storing properly? In the end, I want to display in a table all of the schools in my school table that come from the selected district in the drop down. The table is not being populated because of the null value. Here is my code for more clarity.
District View Model:
School View Model:
Controller w/ getQuery function:
Index View:
Query View:
The table when I run my code:
The problem is that your controller method for Query is expecting some data to be passed in the form of an object, but you aren't passing anything to it. If it's a GET request (and it appears to be because you just set location.href on click), the values would need to be in the query string. Alternatively you can make your form POST to that controller action instead.
You'll need <form> tags. You can GET or POST to your controller method, it won't matter (model binding works either way). It depends on whether you want people to be able to deep-link directly to the search results or not.
<form action="#Url.Action("Query", "District") method="get">
#Html.DropDownListFor(m => m.SelectedDistrict, Model.Districts)
<button type="submit" value="Submit"/>
</form>
That pretty much should do it, or at least get you on the right path.