doc/homework/worktime.html - view

File: [LON-CAPA] / doc / homework / worktime.html
Revision 1.4: download - view: text, annotated - select for diffs
Thu Apr 7 06:56:20 2005 UTC (19 years ago) by albertel
Branches: MAIN
CVS tags: version_2_9_X, version_2_9_99_0, version_2_9_1, version_2_9_0, version_2_8_X, version_2_8_99_1, version_2_8_99_0, version_2_8_2, version_2_8_1, version_2_8_0, version_2_7_X, version_2_7_99_1, version_2_7_99_0, version_2_7_1, version_2_7_0, version_2_6_X, version_2_6_99_1, version_2_6_99_0, version_2_6_3, version_2_6_2, version_2_6_1, version_2_6_0, version_2_5_X, version_2_5_99_1, version_2_5_99_0, version_2_5_2, version_2_5_1, version_2_5_0, version_2_4_X, version_2_4_99_0, version_2_4_2, version_2_4_1, version_2_4_0, version_2_3_X, version_2_3_99_0, version_2_3_2, version_2_3_1, version_2_3_0, version_2_2_X, version_2_2_99_1, version_2_2_99_0, version_2_2_2, version_2_2_1, version_2_2_0, version_2_1_X, version_2_1_99_3, version_2_1_99_2, version_2_1_99_1, version_2_1_99_0, version_2_1_3, version_2_1_2, version_2_1_1, version_2_1_0, version_2_12_X, version_2_11_X, version_2_11_4_uiuc, version_2_11_4_msu, version_2_11_4, version_2_11_3_uiuc, version_2_11_3_msu, version_2_11_3, version_2_11_2_uiuc, version_2_11_2_msu, version_2_11_2_educog, version_2_11_2, version_2_11_1, version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, version_2_11_0, version_2_10_X, version_2_10_1, version_2_10_0_RC2, version_2_10_0_RC1, version_2_10_0, version_2_0_X, version_2_0_99_1, version_2_0_2, version_2_0_1, version_2_0_0, version_1_99_3, version_1_99_2, version_1_99_1_tmcc, version_1_99_1, version_1_99_0_tmcc, version_1_99_0, loncapaMITrelate_1, language_hyphenation_merge, language_hyphenation, bz6209-base, bz6209, HEAD, GCI_3, GCI_2, GCI_1, BZ4492-merge, BZ4492-feature_horizontal_radioresponse, BZ4492-feature_Support_horizontal_radioresponse, BZ4492-Support_horizontal_radioresponse

- ENV -> env

1: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> 2: <html> 3: <head> 4: <title>Worktime Program</title> 5: </head> 6: 7: <body> 8: <h1>Worktime Program</h1> 9: 10: <p> 11: In the examples below <i>italicized</i> lines are lines of code 12: that changed from the previous example, <b>bold</b> lines are 13: lines that have been added to the example, and any time 14: "username" appears it should be replaced by your specific 15: username. 16: </p> 17: <p> 18: Please add this to your /etc/httpd/conf/loncapa_apache.conf file 19: </p> 20: 21: <h3>Conf Changes</h3> 22: 23: 24: <Location /adm/username><br /> 25: PerlAccessHandler Apache::lonacc<br /> 26: SetHandler perl-script<br /> 27: PerlHandler Apache::username<br /> 28: </Location><br /> 29: 30: <LocationMatch "\.username$"><br /> 31: SetHandler perl-script<br /> 32: PerlHandler Apache::username<br /> 33: </LocationMatch><br /> 34: 35: <h3>Example 1</h3> 36: <pre> 37: package Apache::username; 38: use strict; 39: use Apache::Constants qw(:common :http); 40: sub handler { 41: my $r=@_[0]; 42: $r->content_type('text/html'); 43: $r->send_http_header; 44: return OK if $r->header_only; 45: $r->print("The username handler"); 46: return OK; 47: } 48: 1; 49: __END__ 50: </pre> 51: <h3>Example 2</h3> 52: <pre> 53: package Apache::username; 54: use strict; 55: use Apache::Constants qw(:common :http); 56: sub handler { 57: my $r=@_[0]; 58: $r->content_type('text/html'); 59: $r->send_http_header; 60: return OK if $r->header_only; 61: <i>$r->print("The username handler is in use by $env{'user.name'}");</i> 62: return OK; 63: } 64: 1; 65: __END__ 66: </pre> 67: <h3>Example 3</h3> 68: <pre> 69: package Apache::username; 70: use strict; 71: use Apache::Constants qw(:common :http); 72: <b>use Apache::lonnet;</b> 73: sub handler { 74: my $r=@_[0]; 75: $r->content_type('text/html'); 76: $r->send_http_header; 77: return OK if $r->header_only; 78: <i>$r->print("The username handler is in use by $env{'user.name'} looking for " 79: .$r->uri."<br>");</i> 80: <b>my $file=&Apache::lonnet::filelocation("",$r->uri);</b> 81: <b>my $contents=&Apache::lonnet::getfile($file);</b> 82: <b>$r->print($contents);</b> 83: return OK; 84: } 85: 1; 86: __END__ 87: </pre> 88: <h3>Example 4</h3> 89: <pre> 90: package Apache::username; 91: use strict; 92: use Apache::Constants qw(:common :http); 93: use Apache::lonnet; 94: sub handler { 95: my $r=@_[0]; 96: $r->content_type('text/html'); 97: $r->send_http_header; 98: return OK if $r->header_only; 99: $r->print("The username handler is in use by $env{'user.name'} looking for " 100: .$r->uri."<br>"); 101: my $file=&Apache::lonnet::filelocation("",$r->uri); 102: my $contents=&Apache::lonnet::getfile($file); 103: <b>$contents=~s/simple/complex/g;</b> 104: $r->print($contents); 105: return OK; 106: } 107: 1; 108: __END__ 109: </pre> 110: <h3>Example 5</h3> 111: <pre> 112: package Apache::username; 113: use strict; 114: use Apache::Constants qw(:common :http); 115: use Apache::lonnet; 116: sub handler { 117: my $r=@_[0]; 118: $r->content_type('text/html'); 119: $r->send_http_header; 120: return OK if $r->header_only; 121: $r->print("The username handler is in use by $env{'user.name'} looking for " 122: .$r->uri."<br>"); 123: my $file=&Apache::lonnet::filelocation("",$r->uri); 124: my $contents=&Apache::lonnet::getfile($file); 125: $contents=~s/simple/complex/g; 126: $r->print($contents); 127: <b>my %hash=&Apache::lonnet::get('username',('info')); 128: #handle any errors 129: if ($hash{'info'} =~ m/^error:.*/) { 130: $r->print("<br>An error -$hash{'info'}- occured"); 131: } else { 132: $r->print("<br>Last time you said $hash{'info'}"); 133: } 134: if ($env{'form.info'}) { 135: $r->print("<br>Now you say $env{'form.info'}"); 136: $hash{'info'}=$env{'form.info'}; 137: &Apache::lonnet::put('username',%hash); 138: }</b> 139: return OK; 140: } 141: 1; 142: __END__ 143: </pre> 144: <h3>Example 6</h3> 145: <pre> 146: <html> 147: <head><title> A simple file </title></head> 148: <body> 149: This is a simple file 150: </body> 151: </html> 152: </pre> 153: <h3>Example 7</h3> 154: <pre> 155: <html> 156: <head><title> A simple file </title></head> 157: <body> 158: This is a simple file 159: <b><form method="POST" action="/~username/a.username"> 160: <input type="text" name="info"></input> 161: <input type="submit" name="Submit"></input> 162: </form></b> 163: </body> 164: </html> 165: 166: </pre> 167: <ol> 168: <li> 169: login 170: <ol> 171: <li> 172: First login to the CSE machine using the username guest__ 173: and the password CAPA4all. 174: </li> 175: <li> 176: Bring up a terminal by clicnking on the monitor icon with 177: a foot at the bottom of the screen. 178: </li> 179: <li> 180: Start up a netscape by typing netscape& in the terminal. 181: </li> 182: <li> 183: telnet from the terminal to data.lite.msu.edu, login using 184: your username and the password guts 185: </li> 186: <li> 187: Login into LON-CAPA in netscape by pointing the browser at 188: http://data.lite.msu.edu and typing in your username and 189: guts 190: </li> 191: </ol> 192: </li> 193: <li> 194: Using the terminal edit the file ~/username.pm using your 195: favorite unix text editor and type in example 1 196: </li> 197: <li> 198: Point netscape at "http://data.lite.msu.edu/adm/username". You 199: should see a the simple message the handler prints out. 200: </li> 201: <li> 202: Change ~/username.pm to be what is in Example 2, the 203: italicized line is the only one that changed. 204: </li> 205: <li> 206: In netscape reload 207: "http://data.lite.msu.edu/adm/username". You should see the 208: output of the handler should now have your username, which it 209: got from the session enviroment. 210: </li> 211: <li> 212: Next in netscape goto 213: "http://data.lite.msu.edu/~username/a.username". You should 214: see the same output as before. 215: </li> 216: <li> 217: Using the terminal edit the file ~/public_html/a.username and 218: put in it example5 using your favorite unix text editor. 219: </li> 220: <li> 221: Change ~/username.pm to be what is in Example 3, the 222: italicized lines are changed and the bold lines should be 223: added. 224: </li> 225: <li> 226: In netscape reload 227: "http://data.lite.msu.edu/~username/a.username". You should 228: see the output of the handler contains the contents of the file 229: that you created along with the name of the file. 230: </li> 231: <li> 232: Change ~/username.pm to be what is in Example 4, the 233: bold line should be added. 234: </li> 235: <li> 236: In netscape reload 237: "http://data.lite.msu.edu/~username/a.username". You should 238: see the output of the handler contains the contents of the 239: file that you created along with the name of the file, except 240: that this time all instances of the word "simple" have been 241: replaced with the word "complex", this includes the one in the 242: title and the one in the body of the file. 243: </li> 244: <li> 245: <ol> 246: <li> 247: Change what is in ~/username.pm to be what is in Example 248: 5. The bold section of code needs to be added. 249: </li> 250: <li> 251: Change what is in ~/public_html/a.username to be what is 252: in Example 7. The bold section needs to be added 253: </li> 254: <li> 255: In netscape reload 256: "http://data.lite.msu.edu/~username/a.username". The web 257: page should now contain a form, and say that an error 258: occured. 259: </li> 260: <li> 261: Type someting into the form field and click the submit button. 262: </li> 263: <li> 264: The handler should still report an error, but also echo 265: back what you typed into the error handler. 266: </li> 267: <li> 268: Type in the terminal 269: <pre> 270: ls -l /home/httpd/lonUsers/msu/u/s/e/username/ 271: </pre> 272: Notice that there is a username.db file and a 273: username.hist file. 274: </li> 275: <li> 276: Type in the terminal 277: <pre> 278: cat /home/httpd/lonUsers/msu/u/s/e/username/username.hist 279: </pre> 280: You should see the information that you submitted. 281: </li> 282: <li> 283: In netscape revisit 284: "http://data.lite.msu.edu/~username/a.username". (Do 285: this by hitting return in the URL field of netscape, Don't 286: use the reload button.) Notice that the handler no longer 287: has an error. Also notice that the handler tells you what 288: you said last time. 289: </li> 290: <li> 291: Type something new into the text field and hit submit. The 292: handler should tell you the first submission and the last 293: submission. 294: </li> 295: </ol> 296: </li> 297: <li> 298: Extra credit: convert Example 5 to use store/restore instead 299: of the get/put. You will need to publish a .username file and 300: include it into a map. (Note that violin.sequence is the 301: toplevel map for you course. 302: </li> 303: <li> 304: Extra credit: Use Apache::lonxml::xmlparse to properly process the html file. 305: Use <window></window> in your example .username file. 306: </li> 307: </ol> 308: <h2>Helpful Notes</h2> 309: <ul> 310: <li> 311: If you the error handler does come up, the first bold line 312: will indicate what error the server process detected. 313: </li> 314: <li> 315: Remember that Apache::lonnet::put and Apache::lonnet::get 316: store data that is user wide. I use them for simplicity sake 317: here. Every .username file will read and write to the same 318: data location in the last example. Use store/restore if you 319: want to have data stored per unique resource instance in a 320: specific course. However this means that store/restore will 321: through errors if you attempt to use them in a context in 322: which a resource isn't published or isn't uniquely identified 323: (i.e. browsing resources.) 324: </li> 325: </ul> 326: <hr> 327: <address><a href="mailto:albertel@msu.edu">Guy Albertelli</a></address> 328:  329:  330: Last modified: Thu May 24 07:53:18 EDT 2001 331:  332: </body> 333: </html>