| Re: Edit a record? [message #176248 is a reply to message #176207] |
Sat, 10 December 2011 13:02   |
Charles
Messages: 13
Registered: February 2011
Karma:
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Junior Member |
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I have the process down to a fine science in getting data to the
database from the user interface, and I have it down for generating
basidc reports to a printer. I've also designed closed database
applications in the past, so they are not new to me.
Designing a web interface is what's new. Care to recommend any good
references for this part of the project?
On Dec 4, 6:54 am, Arno Welzel <use...@arnowelzel.de> wrote:
> Charles, 2011-12-03 14:28:
>
>> I'm working on an application. I'm trying to implement an update
>> process that pulls a record out of a MySQL database, updates it, and
>> puts it back.
>
>> Broken down, let's assume I have a database made up of the fields:
>> First_name
>> Last_name
>> Month_of_birth
>> Day_of_birth
>> Year_of_birth
>
> Why not a simple DATE field for birth date?
>
>> The steps I'm finding so far are:
>
>> 1) Present a data entry form to enter the values on which the record
>> selection is based (an HTML form with 5 input fields...this I have).
>> 1) Query the database for the record (Submit for processing to a PHP
>> script that opensn the database and submits the values for a SELECT
>> query).
>
>> =========={this is where I am stuck]==============
>
>> 3) Somehow import those returned values into a form for editting.
>
> Why are you stuck? It's simple to output the values just using echo or
> similar. E.g. if the first name fetched from the db is in $db_firstname:
>
> <input
> name="firstname"
> type="text"
> value="<?php echo htmlspecialchars($db_firstname); ?>" />
>
> And if you want to present multiple records, just create names with an
> index, starting with 0 and increased by 1 with every record:
>
> <input
> name="firstname[<?php echo $db_rownum; ?>]"
> type="text"
> value="<?php echo htmlspecialchars($db_firstname); ?>" />
>
>> 4) Indicate somehow (in the form) which records (if more than one)
>> need to be returned as updated to the MySQL database.
>
> One possible way:
>
> Pass the original values as hidden fields in the form, so you can
> compare the modified fields with the original values.
>
> OR:
>
> Store the current values as session variables, so you can compare them
> with the modified fields.
>
>> 5) Somehow post to database
>
> Just use an UPDATE statement in MySQL.
>
> Maybe you should start by learnig the basics about SQL databases,
> session handling and form handling in PHP.
>
> --
> Arno Welzelhttp://arnowelzel.dehttp://de-rec-fahrrad.de
>
>
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