Wiki source code of XWiki Velocity Training
Version 21.1 by Guillaume Delhumeau on 2013/12/09
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| author | version | line-number | content |
|---|---|---|---|
| 1 | = How to use Velocity in XWiki pages = | ||
| 2 | by Guillaume Delhumeau | ||
| 3 | July 2013 | ||
| 4 | |||
| 5 | |||
| 6 | == What is it? == | ||
| 7 | |||
| 8 | === === | ||
| 9 | |||
| 10 | * Velocity is a **template** language. | ||
| 11 | * It describes what your page should be. | ||
| 12 | ** Which means it **control** what you **display**. | ||
| 13 | |||
| 14 | Examples: | ||
| 15 | * display the name of the user | ||
| 16 | * display an image under certain circonstances only | ||
| 17 | * display a list of all the blog categories | ||
| 18 | |||
| 19 | === Example === | ||
| 20 | {{codePres}} | ||
| 21 | Welcome $xcontext.user ! | ||
| 22 | #if($hasAdmin) | ||
| 23 | You will see the following picture because you are an administrator: | ||
| 24 | image:picture.jpg | ||
| 25 | #end | ||
| 26 | {{/codePres}} | ||
| 27 | |||
| 28 | Will output: | ||
| 29 | {{imagePres}}sample1.png{{/imagePres}} | ||
| 30 | |||
| 31 | === === | ||
| 32 | * With XWiki and Velocity, you can retrieve informations contained in other pages | ||
| 33 | |||
| 34 | {{codePres}} | ||
| 35 | #set($docRef = $services.model.createDocumentReference('', 'OtherSpace', 'OtherPage')) | ||
| 36 | #set($document = $xwiki.getDocument($docRef)) | ||
| 37 | The content of the other document is: | ||
| 38 | $document.getContent() | ||
| 39 | {{/codePres}} | ||
| 40 | |||
| 41 | |||
| 42 | {{imagePres}}serrure.jpg{{/imagePres}} | ||
| 43 | |||
| 44 | === === | ||
| 45 | |||
| 46 | * or do advanced searches throught the wiki (via the //Query Module//) : | ||
| 47 | ** //« give me all the blog entries posted during the month of july 2012 and that are not archived and that have at least 3 comments and... »// | ||
| 48 | |||
| 49 | {{imagePres}}detective.jpg{{/imagePres}} | ||
| 50 | |||
| 51 | === === | ||
| 52 | * But XWiki also allows you to use Velocity to **save** things in the wiki. | ||
| 53 | |||
| 54 | {{codePres}} | ||
| 55 | #set($object = $doc.getObject('XWiki.XWikiUsers')) | ||
| 56 | $object.set('first_name', 'Nobody') | ||
| 57 | $doc.save() | ||
| 58 | {{/codePres}} | ||
| 59 | |||
| 60 | |||
| 61 | {{imagePres}}nobody.jpg{{/imagePres}} | ||
| 62 | |||
| 63 | == Principles == | ||
| 64 | |||
| 65 | === Lines === | ||
| 66 | * A line begining by '#' is a Velocity instruction | ||
| 67 | * All other lines are normal lines | ||
| 68 | |||
| 69 | {{codePres}} | ||
| 70 | ## This is a velocity comment - a comment is never displayed and is used to | ||
| 71 | ## add useful information inside a source code. | ||
| 72 | #set($myVar = 42) | ||
| 73 | ## The line above was a velocity instruction | ||
| 74 | This line is a normal line | ||
| 75 | {{/codePres}} | ||
| 76 | |||
| 77 | === Variables === | ||
| 78 | * A //variable// is like a box that can contains data: text, numbers, objects, etc... | ||
| 79 | * A variable is always prefixed by a dollar '$'. | ||
| 80 | * To create a variable, just use the //#set()// Velocity instruction | ||
| 81 | |||
| 82 | {{codePres}} | ||
| 83 | #set($myVar = 42) | ||
| 84 | {{/codePres}} | ||
| 85 | |||
| 86 | * If a variable is inside a normal line, the content of the variable will be displayed: | ||
| 87 | |||
| 88 | {{codePres}} | ||
| 89 | #set($myVar = 42) | ||
| 90 | I am $myVar years old. | ||
| 91 | {{/codePres}} | ||
| 92 | |||
| 93 | will display: | ||
| 94 | |||
| 95 | {{imagePres}}variables.png{{/imagePres}} | ||
| 96 | |||
| 97 | === === | ||
| 98 | Some variables are already created by XWiki when you write a Velocity code, and you can use them. | ||
| 99 | |||
| 100 | |||
| 101 | This is some of them: | ||
| 102 | * //$hasEdit// : this variable tells us if the current user has the edit rights on the current page | ||
| 103 | * //$isGuest// : this variable tells us if the current user is a guest | ||
| 104 | * //$doc// : this variable represents the current document. | ||
| 105 | * //$xwiki// : this special variable is a tool to perform complicated stuffs | ||
| 106 | * //$request// : gives a lot of informations about the current request (like the referer, the query string, etc...) | ||
| 107 | |||
| 108 | === Methods === | ||
| 109 | * Some variable are //objects//. An object can contains //variables// and //methods//. | ||
| 110 | * A method is like an //action// that the object can perform. | ||
| 111 | * Some actions give you an information, some just perform something. | ||
| 112 | * To call them, you write //$someObject.someMethod()// - with the '()'. | ||
| 113 | |||
| 114 | Examples: | ||
| 115 | |||
| 116 | {{codePres}} | ||
| 117 | ## will save the current document: | ||
| 118 | $doc.save() | ||
| 119 | ## will give you the content of the document: | ||
| 120 | $doc.getContent() | ||
| 121 | ## this method takes a "parameter", a text, which will be the new title: | ||
| 122 | $doc.setTitle("My new title") | ||
| 123 | ## will give you the current skin | ||
| 124 | $xwiki.getSkin() | ||
| 125 | {{/codePres}} | ||
| 126 | |||
| 127 | === Class === | ||
| 128 | |||
| 129 | * Every object is different, they don't have the same variables and methods. | ||
| 130 | * But every object is an //instance// of a //class//. | ||
| 131 | * A //class// is like a model that describes what the object will have. | ||
| 132 | ** For example, the //Document// class has a //save// method, so every objects that are //instances// of //Document// will have the //save// method. | ||
| 133 | ** The //String// class has a //length// variable, so every instances of //String// will have this variable too. | ||
| 134 | |||
| 135 | === === | ||
| 136 | * You can use the following code to know what is the class of an object: | ||
| 137 | |||
| 138 | {{codePres}} | ||
| 139 | #set($myVar = 42) | ||
| 140 | $myVar.class.name ## will display 'java.lang.Integer' | ||
| 141 | #set($myVar2 = "This is a text") | ||
| 142 | $myVar2.class.name ## will display 'java.lang.String' | ||
| 143 | $doc.class.name ## will display 'com.xpn.xwiki.api.Document' | ||
| 144 | $xwiki.class.name ## will display 'com.xpn.xwiki.api.XWiki' | ||
| 145 | {{/codePres}} | ||
| 146 | |||
| 147 | |||
| 148 | {{imagePres}}class.jpg{{/imagePres}} | ||
| 149 | |||
| 150 | === === | ||
| 151 | * Now that you know the class of your object, you can google it to have its documentation! | ||
| 152 | * With this documentation, you will be able to knows what method you can use. | ||
| 153 | ** Example with //java.lang.String// | ||
| 154 | |||
| 155 | {{imagePres}}javadoc.png{{/imagePres}} | ||
| 156 | |||
| 157 | === === | ||
| 158 | * As you may have notice, the classes come from the //Java// world. | ||
| 159 | * The documentation about the java classes is called //Javadoc//. | ||
| 160 | * So you can use the the //Javadoc// for Velocity too! | ||
| 161 | |||
| 162 | |||
| 163 | |||
| 164 | {{imagePres}}java.jpg{{/imagePres}} | ||
| 165 | |||
| 166 | == Basic instructions == | ||
| 167 | === Conditions === | ||
| 168 | * When you want to display something only under certain circounstances, you can use the //#if// command. | ||
| 169 | |||
| 170 | {{codePres}} | ||
| 171 | #if($isGuest) | ||
| 172 | Welcome visitor! You should subscribe to the wiki ! | ||
| 173 | #end | ||
| 174 | {{/codePres}} | ||
| 175 | |||
| 176 | * You can also use the //#else// command: | ||
| 177 | |||
| 178 | {{codePres}} | ||
| 179 | #if($isGuest) | ||
| 180 | Welcome visitor! You should subscribe to the wiki ! | ||
| 181 | #else | ||
| 182 | Hello $xcontext.user! I'm happy to see a registred user, I hate visitors! | ||
| 183 | #end | ||
| 184 | {{/codePres}} | ||
| 185 | |||
| 186 | |||
| 187 | {{imagePres}}visitors.jpg{{/imagePres}} | ||
| 188 | |||
| 189 | === Conditions (bis) === | ||
| 190 | * You can compare variables, with the following operators: | ||
| 191 | ** **//==//** : compare if the variables are equals | ||
| 192 | ** **//!=//** : say if the variables are differents | ||
| 193 | ** **//>//** : say if the variable is superior to the other | ||
| 194 | ** **//<//** : do the oposite | ||
| 195 | ** **//>=//** : say if the variable is superior or equal to the other | ||
| 196 | ** **//<=//** : say if the variable is inferior or equal to the other | ||
| 197 | |||
| 198 | * You can create complicated conditions, with the logic operators: | ||
| 199 | ** **//&&//** : which means **"AND"**. | ||
| 200 | ** **//||//** : which means **"OR"**. | ||
| 201 | ** **//!//** : which means **"NOT"**. | ||
| 202 | |||
| 203 | === Examples === | ||
| 204 | {{codePres}} | ||
| 205 | #set($a = 12) | ||
| 206 | #set($b = 28) | ||
| 207 | |||
| 208 | #if($a < $b) | ||
| 209 | A is inferior | ||
| 210 | #else | ||
| 211 | B is inferior | ||
| 212 | #end | ||
| 213 | |||
| 214 | #if($a < 20 && $b > 17) | ||
| 215 | A is inferior than 20 AND B is superior than 17 | ||
| 216 | #end | ||
| 217 | |||
| 218 | #if($a == 15 || $b <= 2) | ||
| 219 | A equals 15 OR B is inferior than 2 or equal | ||
| 220 | #end | ||
| 221 | {{/codePres}} | ||
| 222 | |||
| 223 | === Examples (bis) === | ||
| 224 | {{codePres}} | ||
| 225 | #set($c = true) | ||
| 226 | |||
| 227 | #if($c) | ||
| 228 | C is true | ||
| 229 | #end | ||
| 230 | |||
| 231 | #if($doc.isNew()) | ||
| 232 | The document is New | ||
| 233 | #else | ||
| 234 | The document is an old document | ||
| 235 | #end | ||
| 236 | |||
| 237 | #if(!$doc.isHidden()) | ||
| 238 | The document is NOT hidden | ||
| 239 | #end | ||
| 240 | {{/codePres}} | ||
| 241 | |||
| 242 | === Lists === | ||
| 243 | * You can create a list of objects. | ||
| 244 | |||
| 245 | {{codePres}} | ||
| 246 | #set($myList = ['My first Item', 'My Second Item', 'My third item']) | ||
| 247 | {{/codePres}} | ||
| 248 | |||
| 249 | * You can add a new element in the list: | ||
| 250 | |||
| 251 | {{codePres}} | ||
| 252 | $myList.add('My fourth item') | ||
| 253 | {{/codePres}} | ||
| 254 | |||
| 255 | * You can know how many objects are inside the list: | ||
| 256 | |||
| 257 | {{codePres}} | ||
| 258 | $myList.size() | ||
| 259 | {{/codePres}} | ||
| 260 | |||
| 261 | * You can ask if an object is inside the list | ||
| 262 | |||
| 263 | {{codePres}} | ||
| 264 | $myList.contains('My Second Item') ## which tells me 'true' or 'false' | ||
| 265 | {{/codePres}} | ||
| 266 | |||
| 267 | === Example of lists === | ||
| 268 | {{codePres}} | ||
| 269 | $doc.getComments() ## will give all the comments of the current page ! | ||
| 270 | $doc.getAttachmentList() ## will give all the attachments of the current page | ||
| 271 | $xwiki.getSpaces() ## will give the list of the different spaces of the wiki | ||
| 272 | {{/codePres}} | ||
| 273 | |||
| 274 | |||
| 275 | How could I know the number of spaces in the wiki? | ||
| 276 | |||
| 277 | {{codePres}} | ||
| 278 | ... | ||
| 279 | {{/codePres}} | ||
| 280 | |||
| 281 | |||
| 282 | How could I know if the space 'BlaBla' exists? | ||
| 283 | |||
| 284 | {{codePres}} | ||
| 285 | ... | ||
| 286 | {{/codePres}} | ||
| 287 | |||
| 288 | |||
| 289 | {{imagePres}}teacher.jpg{{/imagePres}} | ||
| 290 | |||
| 291 | === Example of lists === | ||
| 292 | {{codePres}} | ||
| 293 | $doc.getComments() ## will give all the comments of the current page ! | ||
| 294 | $doc.getAttachmentList() ## will give all the attachments of the current page | ||
| 295 | $xwiki.getSpaces() ## will give the list of the different spaces of the wiki | ||
| 296 | {{/codePres}} | ||
| 297 | |||
| 298 | |||
| 299 | How could I know the number of spaces in the wiki? | ||
| 300 | |||
| 301 | {{codePres}} | ||
| 302 | $xwiki.getSpaces().size() | ||
| 303 | {{/codePres}} | ||
| 304 | |||
| 305 | |||
| 306 | How could I know if the space 'BlaBla' exists? | ||
| 307 | |||
| 308 | {{codePres}} | ||
| 309 | $xwiki.getSpaces().contains('BlaBla') | ||
| 310 | {{/codePres}} | ||
| 311 | |||
| 312 | |||
| 313 | {{imagePres}}goodmark.jpg{{/imagePres}} | ||
| 314 | |||
| 315 | === Foreach === | ||
| 316 | * How can I display all the elements of a list in a nice way? | ||
| 317 | ** Use the //#foreach// loop, son. | ||
| 318 | * Example: | ||
| 319 | |||
| 320 | {{codePres}} | ||
| 321 | This is the list of all the spaces of the wiki | ||
| 322 | #set($spaceList = $xwiki.getSpaces()) | ||
| 323 | #foreach($space in $spaceList) | ||
| 324 | * $space | ||
| 325 | #end | ||
| 326 | {{/codePres}} | ||
| 327 | |||
| 328 | * Results: | ||
| 329 | {{imagePres}}foreach1.png{{/imagePres}} | ||
| 330 | |||
| 331 | == The API == | ||
| 332 | |||
| 333 | === === | ||
| 334 | * XWiki offers a lot of objects with a lot of methods, to perform a lot of things ! | ||
| 335 | ** Delete a document, add a tag to an other document, display the list of all blog entries, handle complex formulars, etc... | ||
| 336 | * This objets & methods are called the **API** (as //Application Programming Interface//). | ||
| 337 | * But how can I know what are theses objects and how to use it? | ||
| 338 | |||
| 339 | {{imagePres}}API.jpg{{/imagePres}} | ||
| 340 | |||
| 341 | === By using the XWiki Script Reference Documentation (SRD) === | ||
| 342 | |||
| 343 | {{imagePres}}SRD.png{{/imagePres}} | ||
| 344 | |||
| 345 | http://platform.xwiki.org/xwiki/bin/view/SRD/Navigation?xpage=embed | ||
| 346 | |||
| 347 | === SRD === | ||
| 348 | * The left column lists **all the XWiki special variables that make the API**. | ||
| 349 | * Select one of them, and you will have **all the methods this special variable offers** | ||
| 350 | ** Examples: | ||
| 351 | *** //$xwiki// offers a method //getDocument()// | ||
| 352 | *** //$doc// has a method //addAttachment()// | ||
| 353 | *** etc... | ||
| 354 | |||
| 355 | === Is the API a mess?=== | ||
| 356 | * While looking at the SRD, we can ask youself //"how many special variables is there?"// | ||
| 357 | * When we create a variable for our own usage, we have to be sure first to not call it as an existing special variable. | ||
| 358 | ** It's a mess!!! | ||
| 359 | |||
| 360 | {{imagePres}}mess.jpg{{/imagePres}} | ||
| 361 | |||
| 362 | === Introducing Script Services === | ||
| 363 | * In order to make the things cleaner, the plan is to remove a lot of this special variables and replace them by //script services//. | ||
| 364 | * Script services will become the only API in future. | ||
| 365 | * All script services are prefixed by //$services//. | ||
| 366 | |||
| 367 | {{imagePres}}datacenter.jpg{{/imagePres}} | ||
| 368 | |||
| 369 | === === | ||
| 370 | * To use a script service, you do it this way: | ||
| 371 | |||
| 372 | {{codePres}} | ||
| 373 | $services.query ## to perform complicated researchs | ||
| 374 | $services.localization ## to take care of the languages | ||
| 375 | $services.officeimporter ## to import office documents | ||
| 376 | ... | ||
| 377 | {{/codePres}} | ||
| 378 | |||
| 379 | * Of course, it is documented on the SRD! | ||
| 380 | |||
| 381 | {{imagePres}}wayne.jpg{{/imagePres}} | ||
| 382 | |||
| 383 | === === | ||
| 384 | * Sometime, you have different ways to do the same thing: | ||
| 385 | ** Using an old method (which may be declared as //deprecated//). | ||
| 386 | ** Using a script service instead | ||
| 387 | * ** Always perfers to use Script Service instead of deprecated APIs!!!** | ||
| 388 | |||
| 389 | {{codePres}} | ||
| 390 | $xwiki.searchDocument() ## allow us to perfom a query with the HQL language | ||
| 391 | ## now please use: | ||
| 392 | $services.query.hql() ## allow us to perfom a query with the HQL language | ||
| 393 | ## or even better: | ||
| 394 | $services.query.xwql() ## XWQL language is easier to use | ||
| 395 | {{/codePres}} | ||
| 396 | |||
| 397 | * Because it's the future! | ||
| 398 | |||
| 399 | {{imagePres}}future.jpg{{/imagePres}} | ||
| 400 | |||
| 401 | == Manipulation of XObjects == | ||
| 402 | === What is an XObject ? === | ||
| 403 | * An //XObject// is an **object** that you can **save** in the wiki. | ||
| 404 | * An XObject is attached on a document, and you can see them with the "objects editor" on the wiki. | ||
| 405 | |||
| 406 | {{imagePres}}edit_objects.png{{/imagePres}} | ||
| 407 | |||
| 408 | === === | ||
| 409 | {{imagePres}}objects.png{{/imagePres}} | ||
| 410 | |||
| 411 | === XClass === | ||
| 412 | * An //XClass// is a //class// (a //description//) for XObjects. | ||
| 413 | ** You can define them using the class editor. | ||
| 414 | ** Or by using //Application Within Minutes//! | ||
| 415 | |||
| 416 | === Class Editor === | ||
| 417 | {{imagePres}}class_editor.png{{/imagePres}} | ||
| 418 | |||
| 419 | === Application Within Minutes === | ||
| 420 | {{imagePres}}appwithinminutes.png{{/imagePres}} | ||
| 421 | |||
| 422 | === Why using XClass and XObjects? === | ||
| 423 | * It allows us to store **structured** informations. | ||
| 424 | ** A //Blog Post// (with a //title//, a //date//, a //content//, etc...) | ||
| 425 | ** An //Evaluation document// (with a //remark// for each //category//, a //mark//, etc...) | ||
| 426 | ** An //Holiday Request// (with //dates//, //status//, etc...) | ||
| 427 | |||
| 428 | * So the //information// is not lost in a giant document that holds only a big text... | ||
| 429 | ** And you can create //Applications//! | ||
| 430 | |||
| 431 | === XClass is used //everywhere// === | ||
| 432 | * Almost everything in XWiki is an XClass and stored as XObjects! | ||
| 433 | ** //Users// | ||
| 434 | ** //Groups// | ||
| 435 | ** //Comments// | ||
| 436 | ** //Tags// | ||
| 437 | ** //Access Rights// | ||
| 438 | ** .... | ||
| 439 | * Learn to use //XClass// and you can **control all your wiki**. | ||
| 440 | |||
| 441 | === A comment is an XObject === | ||
| 442 | {{imagePres}}comments.png{{/imagePres}} | ||
| 443 | |||
| 444 | === A user is an XObject === | ||
| 445 | {{imagePres}}user.png{{/imagePres}} | ||
| 446 | |||
| 447 | === How to get an XObject with Velocity? === | ||
| 448 | |||
| 449 | {{codePres}} | ||
| 450 | ## First, get the object | ||
| 451 | #set($object = $doc.getObject('XWiki.XWikiUsers')) | ||
| 452 | ## The parameter is the name of the class of the object you want to have | ||
| 453 | ## (a document can hold multiple objects of different classes) | ||
| 454 | ## The class name is the Document name where the class is defined | ||
| 455 | |||
| 456 | ## Display a parameter: | ||
| 457 | $object.display('first_name', 'view') | ||
| 458 | ## the parameter is the name of the field you want to display | ||
| 459 | ## if you are in "edit" mode, an HTML field will be displayed instead of the object value. | ||
| 460 | |||
| 461 | ## Set values: | ||
| 462 | $object.set('last_name', 'Bond') | ||
| 463 | $object.set('first_name', 'James') | ||
| 464 | |||
| 465 | ## Then save the document if you want your changes to be conserved | ||
| 466 | ## (you can add a comment when you save) | ||
| 467 | $doc.save('I have changed the name of the user.') | ||
| 468 | {{/codePres}} | ||
| 469 | |||
| 470 | === You can rollback what your script have done === | ||
| 471 | {{imagePres}}rollback.png{{/imagePres}} | ||
| 472 | |||
| 473 | == Tips == | ||
| 474 | |||
| 475 | === How to get an other document? === | ||
| 476 | * In the past, we used to do: | ||
| 477 | |||
| 478 | {{codePres}} | ||
| 479 | #set($document = $xwiki.getDocument('Space.Page')) | ||
| 480 | {{/codePres}} | ||
| 481 | |||
| 482 | * But it's not good, because what if the page name has a dot? | ||
| 483 | |||
| 484 | {{codePres}} | ||
| 485 | #set($document = $xwiki.getDocument('Space.Pa.ge')) | ||
| 486 | ## ??? What is the Space ? What is the Page ? | ||
| 487 | {{/codePres}} | ||
| 488 | |||
| 489 | * And what will happen if the document name have accents or weird characters? | ||
| 490 | |||
| 491 | === Solution: use references !=== | ||
| 492 | |||
| 493 | {{codePres}} | ||
| 494 | #set($reference = $services.model.createDocumentReference('Wiki', 'Space', 'Page')) | ||
| 495 | #set($document = $xwiki.getDocument($reference)) | ||
| 496 | {{/codePres}} | ||
| 497 | |||
| 498 | * It is better! The reference tool allow us to stricty separe what is the space and what is the page | ||
| 499 | * And the reference tool will take care of weird characters ! | ||
| 500 | |||
| 501 | {{codePres}} | ||
| 502 | #set($reference = $services.model.createDocumentReference('Wiki', 'Space', 'Pa.ge')) | ||
| 503 | #set($document = $xwiki.getDocument($reference)) | ||
| 504 | ## Not a problem!!! | ||
| 505 | {{/codePres}} | ||
| 506 | |||
| 507 | === References === | ||
| 508 | * You can get create references for documents in other wikis : | ||
| 509 | |||
| 510 | {{codePres}} | ||
| 511 | #set($reference = $services.model.createDocumentReference('Wiki', 'Space', 'Page')) | ||
| 512 | {{/codePres}} | ||
| 513 | |||
| 514 | * If you want to get a document in the current wiki, you can set an empty parameter: | ||
| 515 | |||
| 516 | {{codePres}} | ||
| 517 | #set($reference = $services.model.createDocumentReference('', 'Space', 'Page')) | ||
| 518 | ## the reference point a document in the current wiki | ||
| 519 | {{/codePres}} | ||
| 520 | |||
| 521 | === Use case: changing the name of the boss === | ||
| 522 | |||
| 523 | {{codePres}} | ||
| 524 | ## First, create a reference to his user page | ||
| 525 | #set($reference = $services.model.createDocumentReference('', 'XWiki', 'ldubost')) | ||
| 526 | ## Then, get its document | ||
| 527 | #set($document = $xwiki.getDocument($reference)) | ||
| 528 | ## Then, get the 'User' object | ||
| 529 | #set($object = $document.getObject('XWiki.XWikiUsers')) | ||
| 530 | ## Then change his name | ||
| 531 | $object.set('first_name', 'Harry') | ||
| 532 | $object.set('last_name', 'Potter') | ||
| 533 | ## And save the document | ||
| 534 | $document.save() | ||
| 535 | {{/codePres}} | ||
| 536 | |||
| 537 | === === | ||
| 538 | {{imagePres}}harry.jpg{{/imagePres}} | ||
| 539 | |||
| 540 | === But remember we know who change what! === | ||
| 541 | {{imagePres}}history.png{{/imagePres}} | ||
| 542 | |||
| 543 | (% style="text-align: right; margin-top: 20px;" %) | ||
| 544 | "//I have your name and I know where you live...//" | ||
| 545 | |||
| 546 | == Going further == | ||
| 547 | === === | ||
| 548 | * See the [[Velocity documentation>>http://velocity.apache.org/]] to have more details about the language itself | ||
| 549 | * See the [[XWiki Script Guide>>http://platform.xwiki.org/xwiki/bin/view/DevGuide/Scripting]] to have some informations about how to make scripts in XWiki | ||
| 550 | * See the [[XWiki Query Module>>http://extensions.xwiki.org/xwiki/bin/view/Extension/Query+Module]] to learn how to do advanced queries | ||
| 551 | * See the [[XWiki Data Model>>http://platform.xwiki.org/xwiki/bin/view/DevGuide/DataModel]] to learn how to create your XWiki classes | ||
| 552 | |||
| 553 | **But in general:** | ||
| 554 | * practice and ask for help!!! | ||
| 555 | |||
| 556 | === === | ||
| 557 | * I hope you now have a better idea of what Velocity is and how you can use it in XWiki. | ||
| 558 | |||
| 559 | {{imagePres}}velocity.jpg{{/imagePres}} | ||
| 560 | |||
| 561 | === Any question? === | ||
| 562 | |||
| 563 | {{imagePres}}questions.jpg{{/imagePres}} |
