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search criteria

Thread began 1/16/2012 11:17 am by info97301 | Last modified 1/26/2012 9:58 am by Jason Byrnes | 964 views | 11 replies |

info97301

search criteria

Hi

I have a table with PgID, Under_PgID, PgType etc fields. The PgID is the primary key, autonumber. The Under_PgID contains the PgID number of a page that it is 'under' in the menu structure.

I have a search form that works quite well (bar one issue that is on another post) - but I want to be able to search for pages PgType = 1 AND Under_PgID IS NULL

I read in the forums that searching for null values isn't possible with DA, so I wondered if there is a way to create a temporary field that inserts a value where the above criteria are met. This would then enable me to put another search value in place.

For example, if PgType=5 AND Under_PgID IS NULL, insert 'top' into temporary field 'TopPage'.

Whichever solution is possible, I'd be obliged for guidance

Thanks
Chris

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Ray BorduinWebAssist

Searching for Null is possible with DA. I don't think a temporary table will be necessary. Do you always want only results where that field is null in your results or are you responding to a form element like a checkbox?

You may be able to just add "WHERE Under_PgID IS NULL" to the recordset directly and then the DA search will add " AND PgType = 1" according to t he search criterion.

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info97301

Hi Ray

Thanks for the speedy reply.

There are a number of different searches on the page, including where PgType = 3 or 4 etc and in these instances the Under_PgID may or may not be null. Equally, there may be pages of PageType = 5 that have an Under_PgID not null, so I don't think I can write it in the recordset

Cheers
Chris

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Ray BorduinWebAssist

So, how would you determine when to add the IS NULL or not? Is there a checkbox?

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info97301

Hi Ray

I've done things slightly differently now, so that 'under pages' are accessed after the initial search.

However, to simplify things, when the page is opened, I'd like just to show the pages WHERE PgType = 1 AND Under_PgID IS NULL

So how do I get the 'IS NULL' into the url ??? below

/pages_Results.php?S_PgID=&S_PgTypeID=1&S_Under_PgID=???&S_PgTitle=&S.....

Or how should I achieve it?? Can the recordset have something like if parameter xyz exists, Under_PgID IS NULL, else ignore it.

Thanks

Chris

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Jason ByrnesWebAssist

this would require some hand coding to accomplish. send a copy of your page please so i can see what you have set up already and advise on what to change.

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info97301

Hi Jason

Many thanks - I have split the file in two.

Cheers
Chris

Attached Files
pages_Results-body.txt
pages_Results.txt
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Jason ByrnesWebAssist

please compress the original php file into a zip archive and attach the zip file.

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info97301

Hi Jason

zip attached.

thanks
Chris

Attached Files
pages_Results.zip
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Jason ByrnesWebAssist

so, you want to default to searching for
PgType = 1 AND Under_PgID IS NULL

is no search criteria is entered? Is that it?

if so, set the default where clause in the data assist search behavior to:
PgType = 1 AND Under_PgID IS NULL

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