Transcript Web Design ITI

Information Visualization Course
Web Design
Prof. Anselm Spoerri
[email protected]
© Anselm Spoerri
Lecture 10 – Overview
Short Assignment 2
MySQL & PHP code
Sample files have been uploaded to Sakai > Resources > PHP Files
– Browse View to access
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Gigapans (practice in Short Assignment 2)
Photosynths
Videos
Attach Hyperlink to Thumbnail to Link to Individual Item page
– Individual Item based on supplied id
– Gigapan
– Photosynth
– Video
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Short Assignment 2
Files to consult and modify
Info about MySQL Tables in whereRU
in Sakai > Resources
databaseConnect_table_gigapan_lastname.php
‒
Shows you how to control number of Gigapans to embed
‒
Shows you how to create table with Gigapan thumbnails
Example: databaseConnect_table_gigapan_spoerri.php
 Change MySQL query so that you retrieve the most recent Gigapans
for specific campus
 Customize code so that only one embedded Gigapan
 Customize code so that only two rows of 5 Gigapan thumbnails are
shown
Example: databaseConnect_table_gigapan_SA2a_spoerri.php
 Customize & Create CSS code to achieve desired look
 Redo above steps for next campus
Example: databaseConnect_table_gigapan_SA2bs_spoerri.php
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MySQL – Queries
"SELECT something FROM tablename";
"SELECT id, title, campus FROM $db_table";
COUNT
"SELECT COUNT(*) FROM $db_table"; // number or rows in table
WHERE used to narrow results based true expression
"SELECT * FROM $db_table WHERE field='value'";
LIKE qualifier allows searches on parts of strings
"SELECT * FROM $db_table WHERE field LIKE "%NB%"";
LIMIT choose how many rows to return and where to start
"SELECT * FROM $db_table LIMIT 3,2";
// skip first 3 rows and return 2 rows
ORDER BY sorts results by one or more columns
"SELECT * FROM $db_table ORDER BY campus, date_created DESC";
GROUP BY
"SELECT * FROM $db_table GROUP BY campus";
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SQL Queries
Possible queries:
$query = "SELECT * FROM $db_table";
$query = "SELECT * FROM $db_table WHERE campus='Newark'";
$query = "SELECT * FROM $db_table ORDER BY date_created DESC";
$query = "SELECT * FROM $db_table WHERE campus='Newark'
ORDER BY date_created DESC";
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Access Gigapans
Database Table:
$db_table = 'whereru_gigapan';
// description in Sakai Resources
Example: databaseConnect_table_gigapan_spoerri.php
Embed Gigapan:
<object type="application/x-shockwave-flash"
style="width:$width"."px; height:$height"."px;"
data="$row[$embed]" ><param name="movie"
value="$row[$embed]" /></object>
Thumbnail Images:
t= 1 (for gigapan)
w and h specify width and height of thumbnail
<img src="http://whereru.rutgers.edu/thumb.php?id=$row[$id]&
t=1&w=84&h=42" />
Remember: you have to escape \ the quotation marks if used inside an echo statement
© Anselm Spoerri
Access Photosynths
Database Table:
$db_table = 'whereru_photosynth';
// description in Sakai Resources
Example: databaseConnect_table_photosynth_spoerri.php
Embed Photosynth:
<iframe src=“$row[$embed]" frameborder="0" width="$width" height="$height"
scrolling="no" marginheight="0" marginwidth="0"></iframe>
Remember: you have to escape \ the quotation marks if used inside an echo statement
Thumbnail Images:
t= 2
(for photosynth)
w and h specify width and height of thumbnail
<img src="http://whereru.rutgers.edu/thumb.php?id=$row[$id]&
t=2&w=84&h=42" />
Remember: you have to escape \ the quotation marks if used inside an echo statement
© Anselm Spoerri
Access Videos
Database Table:
$db_table = 'whereru_video';
Example:
// description in Sakai Resources
databaseConnect_table_video_spoerri.php
Embed Video:
<object width="$width" height="$height"><param name="movie"
value="$row[$embed]"></param><param name="allowFullScreen"
value="true"></param><param name="allowscriptaccess"
value="always"></param><embed src="$row[$embed]" type="application/xshockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="$width"
height="$height"></embed></object>
Remember: you have to escape \ the quotation marks if used inside an echo statement
Thumbnail Images:
t= 3
(for video)
w and h specify width and height of thumbnail
<img src="http://whereru.rutgers.edu/thumb.php?id=$row[$id]&
t=3&w=84&h=42" />
Remember: you have to escape \ the quotation marks if used inside an echo statement
© Anselm Spoerri
Access Gigapan with Specific ID
Database Table:
$db_table = 'whereru_gigapan';
// description in Sakai Resources
SQL Query to access record for specific id:
$query = "SELECT * FROM $db_table WHERE id=$id";
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Attach Hyperlink to Individual Item
Attach hyperlink to thumbnail so that click loads individual view
Set border of image to zero so that blue border does not show because of hyperlink
URL: databaseConnect_individual_gigapan_links_spoerri.php
<a href="individualGigapan.php?id=$row[$id]">
<img
src="http://whereru.rutgers.edu/thumb.php?id=$row[$id]
&t=1&w=84&h=42"
border="0"
/>
</a>
To be able to supply variables via URL need start with
and use
? for first variable
& for subsequent variables
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View Individual Item
To display Gigapan with a specific id passed in via URL
URL: databaseConnect_individual_gigapan_spoerri.php
?id=50
Use extract($_GET) to assign id to a php variable
So that extracted variables don't conflict with ones that you have already defined
use parameter in extract function, like this:
extract($_GET, EXTR_PREFIX_ALL, 'fromget');
You can access the passed-in id via the $fromget_id variable
SQL query to access record for specific id
$query = "SELECT * FROM $db_table WHERE id=$fromget_id";
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