Adding validation to page during page layout

Hello

I have a report page that is divided into two sections. The top section contains the parameters in the form of Page elements that the user can enter, then click on a "Submit" button to submit a report. Once they click the submit button, the results appear in the interactive report section below.

The interactive report query is based on the point of page settings and I configure SQL so that during initial entry to the page, when the page elements are all zero, the query is not return all possible results. The Send button contains an action of "submit Page".

My question is, I want to apply validation to the page now to control things like the fields required and some slightly more advanced example at least one of four specified fields must be met etc. I don't know how to put the validation in place to achieve this goal, and what I've found so far is that even if I put the item page of 'Value' property to check for a NULL value, once you click on the button send that the error at the top of the page, but the report always returns results based on other parameters that can be filled. I can understand why he did this because we are going to submit the page and we have some of the elements which depends the full page report query. I want to make all the validation when the user clicks on submit, however, if one of them fails, then I wouldn't have to send the page i.e. return all the results of the query.

Could you please indicate the best way to reach my goal and how do I put the validation? I need to keep the design the same, i.e. the user enters parameters at the top, and then clicks on a Submit button to reveal the results down.

Thank you

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I have a report page that is divided into two sections. The top section contains the parameters in the form of Page elements that the user can enter, then click on a "Submit" button to submit a report. Once they click the submit button, the results appear in the interactive report section below.

The interactive report query is based on the point of page settings and I configure SQL so that during initial entry to the page, when the page elements are all zero, the query is not return all possible results. The Send button contains an action of "submit Page".

My question is, I want to apply validation to the page now to control things like the fields required and some slightly more advanced example at least one of four specified fields must be met etc. I don't know how to put the validation in place to achieve

This type of validation can be simply implemented with the help of a type Page-level PL/SQL Expression Validation using the coalesce function:

coalesce(:p1, :p2, :p3, :p4) is not null

where :p1 , :p2 , etc., are the search criteria the items page.

what I've found so far, is that even if I put the item page of 'Value' property to check for a NULL value, once you click on the button send that the error at the top of the page, but the report always returns results based on other parameters that can be filled. I can understand why he did this because we are going to submit the page and we have some of the elements which depends the full page report query. I want to make all the validation when the user clicks on submit, however, if one of them fails, then I wouldn't have to send the page i.e. return all the results of the query.

Could you please indicate the best way to reach my goal and how do I put the validation? I need to keep the design the same, i.e. the user enters parameters at the top, and then clicks on a Submit button to reveal the results down.

The page must be submitted in order to trigger validation, which is the best way to handle this.

APEX includes both integrated conditions reflecting the State of the page validation: Inline Validation errors displayed and No. Inline Validation errors displayed. You can use these conditionally perform one of the two before the process header to switch a page flag point PX_VALIDATION_FAILED (set property Condition Never so it is not rendered on the page) of the item between 1 and 0 respectively.

Rather than include the conditions of report rendering in the SQL report, I would recommend making the report interactive whole region conditional on the existence of criteria and the lack of validation errors. Move the report criteria NOT predicates NULL of the report source SQL to a condition Expression PL/SQL area and add an another predicate to the condition that verifies that the validation flag value is 0.

Tags: Database

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