U:/msu/course/cse/103 Day 25, Slide 1 Back-up PHP Files If you have not yet passed the 3.0 BT, make back-up copies of ALL of your PHP files (BEFORE you start today’s class work) to use when you take the 3.0 BT. –What we cover today may complicate taking the BT if you try to use it then

U:/msu/course/cse/103 Day 25, Slide 2 Review of Day 23 Create a form page, addmovie_form.php that has text boxes for the title and year Create a handler page addmovie_handler.php –Write SQL query to add title and year to tbl_Movies INSERT INTO tbl_Movies (MovieTitle, Year) VALUES ('valueForMovieTitle', valueForYear) –Use form information via $_POST[‘Name’], where Name is the name= of the form element –Use insert_autonumbered_row() to submit the query –Save new id returned by function in new PHP variable

U:/msu/course/cse/103 Day 25, Slide 3 Review of Day 23 continued Add a form element for entry of Genre data to the addmovie_form.php page. Make this form element a drop-down box. –Use only Genres listed in tbl_Genres –Use print and the CSE 103 support function dropbox_from_query() to make the dropbox on the form. (Don’t use a normal form element!) Requires a query that selects two fields: one a key value and one something to be displayed

U:/msu/course/cse/103 Day 25, Slide 4 Review of Day 23, part 3 Change the addmovie_handler.php page to also add the genre information to the database. –Assign the autonumber ID (created when title and year are added to tbl_Movies) to a variable. –Use that variable in constructing a query to add the movieID and the submitted genre info (and rank 1) to tbl_MovieGenres The $_POST['name'] for this matches the 2 nd argument to dropbox_from_query() on your form page –Use the CSE 103 support function run_action_query() to run this query.

U:/msu/course/cse/103 Day 25, Slide 5 Adding Movies Considerations Q1: How can we determine if the “add” is successful? Q2: How can we determine if a movie is in the database already? Q3: What should we do if a movie is already in the database?

U:/msu/course/cse/103 Day 25, Slide 6 A1: The IF statement The IF statement lets us perform one or another set of actions based on the value of a test. –The test must have a value of either true or false. –It uses relational operators,<>,==, etc. If true, the first set of statements after the IF are executed. If false, the statements after an else (following the if) are performed instead.

U:/msu/course/cse/103 Day 25, Slide 7 Example: IF test if ( $MovieID == 0) { print "No movie added"; } else { print "Movie added with ID = "; print $MovieID; } Autonumber IDs are never 0, so if 0 was returned, we know we didn't get a "real" ID

U:/msu/course/cse/103 Day 25, Slide 8 First Conditional Exercise Modify your addmovie_handler.php page to test whether or not the action query on tbl_Movies is successful –What does it mean that a movie was added? Display appropriate messages to the user and take other appropriate actions in each case. –What should you do if adding the record is successful? … if it is not successful?

U:/msu/course/cse/103 Day 25, Slide 9 A2 & A3: Check for a pre- existing entry and action Write an SQL query to test whether or not a MovieTitle and Year combination is already in the database. –What can we look for that we can easily test? Use the returned value in an IF test –How should we test? What does our test mean if true? If the movie IS NOT in the database, then add it as a new record and continue as before. If the movie IS in the database, display a message to that effect plus its MovieID. –STOP and do not attempt to insert the data

U:/msu/course/cse/103 Day 25, Slide 10 Dynamic Web Page Design How should I put dynamic pages together to form a site? –Organization chart is very helpful, as used in CSE 101 What information is needed to construct each page? What interface do I want to present to the user?

U:/msu/course/cse/103 Day 25, Slide 11 End-of-Term SIRS Link on the Student Site Map Three forms – Course, Lead, and Asst Comments will be considered for future course development of CSE 101 Available until Thursday, April 28th at 4pm, when UBTs are due Necessary to access your BT Feedback

U:/msu/course/cse/103 Day 25, Slide 12 UBT Databases Each student in CSE 103 currently has a MySQL database Database name is student’s msuNetID Database is currently empty unless you already submitted an Access database for us to convert

U:/msu/course/cse/103 Day 25, Slide 13 To create UBT Databases: You submit (via ) an Access db file to with desired table structures (fieldnames and datatypes) –Also look for other properties like Required? –Don't bother with lookups; we can't convert those –DO bother with relationships (helps us understand) We will create the tables in your db from your Access sample. You create the web forms and action pages to enter data into those tables and to manipulate the data as needed for your UBT project.

U:/msu/course/cse/103 Day 25, Slide 14 A good UBT should: Demonstrate good database design –Appropriate tables, fields, datatypes, keys, and relationships, as well as integrity and minimal redundancy (everything related to the 2.0 BT) Demonstrate mastery of various queries –Both Select and Action, use of functions, calculated fields, aggregate functions, etc. Demonstrate ability to learn new concepts –Use new functions, query types, etc. that we didn’t cover in-class or on any BT

U:/msu/course/cse/103 Day 25, Slide 15 Remainder of Semester Day 26 (Thurs/Mon) - In-Class BT Opportunity Day 27 (next Tue/Wed) - In-Class Helproom Day 28 (next Thurs/week from Mon) - In-Class BT Opportunity Thursday, April 28 th - UBTs due at 4 pm On Days 26 and 28, your Lead will be in the CSE 103 office during class hours if you have already passed 3.0 and need UBT help Feel free to with UBT questions when working