How to have a check box and interacted with grid

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Posted on by Axel Cage

309

Hello guys,

In my custom form with a grid, I want to add a check box, and this check box when it is "checked" it will only show rows with status "Posted", Default will be not checked, so it is showing all statuses. How am I gong to achieve this ?

I have added the check box in my form, and then in code editor, for the Click method, I tried to write code, something like this :

[Control("CheckBox")]
class ShowPosted
{
    public void clicked()
        {
            QueryBuildDataSource        rangeDataSource;
            QueryBuildRange             criteriaShowPosted;
            /// 
            /// Execute and manage the filter pane and quick filter control queries.
            /// 
            Query initialQuery = new Query(My_Table_ds.query());
            rangeDataSource = initialQuery.dataSourceNo(1);

            if (this.checked())
            {
                criteriaShowPosted = SysQuery::findOrCreateRange(rangeDataSource, fieldnum(My_Table, Status));
                criteriaShowPosted.value(queryValue(My_Status::Posted));
            }
            My_Table_ds.executeQuery();
        }
}

Did I missed something ? or it is just not the way to do it ?

Thanks

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Answers (1)

GirishS 27,827 Moderator on at

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Hi Alex,

Normally the filtering grid based on the condition will be added in the datasource execute query method.

So based on the status field add range to the datasource execute query method.

On the modified method of the check box control call datasource_ds.executeQuery() to filter the records.

Thanks,

Girish S.

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Axel Cage 309 on at

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Hi Girish,

I tried to move all that in Clicked() to Modified(), but looks not working. It's like this :

[Control("CheckBox")] class ShowPosted { ///
/// Updates the form data selection criteria when the check box is clicked. ///
public void clicked() { super(); } ///
/// ///
/// public boolean modified() { QueryBuildDataSource rangeDataSource; QueryBuildRange criteriaShowPosted; ///
/// Execute and manage the filter pane and quick filter control queries. ///
Query initialQuery = new Query(My_Table_ds.query()); rangeDataSource = initialQuery.dataSourceNo(1); if (this.checked()) { criteriaShowPosted = SysQuery::findOrCreateRange(rangeDataSource, fieldnum(My_Table, Status)); criteriaShowPosted.value(queryValue(My_Status::Posted)); } My_Table_ds.executeQuery(); return true; } }

Thanks,

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GirishS 27,827 Moderator on at

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Hi Alex,

Refer to the below code.

On the Form datasource - Methods - Override methods - Select execute query method and add the below code. Also set the "Auto Declaration" property of the check box control to yes.
Public void executeQuery() { if(controlName.checked()) { YourDataSourceName_ds.queryBuildDataSource().addRange(fieldnum(My_Table, Status)).value(queryvalue((My_Status::Posted))); } else { YourDataSourceName_ds.queryBuildDataSource().clearRanges(); } YourDataSourceName_ds.refresh(); super(); }

Now override the modified method of the control and add the below code. Expand the control >> Right click the methods and select modified.

///
/// ///
/// public boolean modified() { boolean ret; ret = super(); if(ret) { YourDataSourceName_ds.executeQuery(); } }

Thanks,

Girish S.

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Martin Dráb 237,807 Most Valuable Professional on at

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As you see, just saying that it's not working doesn't help you to fix the problem. You need to do more work on understand why it doesn't work. First of all, observe the behavior - it might already point to a specific problem. Then use the debugger - it's the most powerful tool you to find out what's going on in your code. And when you're writing code to modify form's query and the form doesn't behave as expected, a logic step is checking what query you've actually generated.

The bug in your modified() method is that you don't modify the query used be the form. You create a new copy of the query and add a range there. It doesn't have any impact on the form and initialQuery gets destroyed at the end of modified().

Therefore your code in modified() should look like thiis:

public boolean modified() { boolean ret = super(); QueryBuildDataSource myTableQbds = my_Table_ds.queryBuildDataSource(); if (this.checked()) { QueryBuildRange criteriaShowPosted = SysQuery::findOrCreateRange(myTableQbds, fieldnum(My_Table, Status)); criteriaShowPosted.value(queryValue(My_Status::Posted)); } my_Table_ds.executeQuery(); return ret; }

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Axel Cage 309 on at

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Thank you very much for your guidance.

It works!

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