advancedcontentfilter/doc/advancedcontentfilter.md

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  19
  20 <a href="advancedcontentfilter">🔙 Back to Advanced Content Filter Settings</a>
  21
  22 # Advanced Content Filter Help
  23
  24 The advanced Content Filter uses Symfony's Expression Language.
  25 This help page includes a summary of [the Symfony's Expression Language documentation page.](https://symfony.com/doc/current/components/expression_language/syntax.html)
  26
  27 ## Basics
  28
  29 The advanced content filter matches each post that is about to be displayed against each enabled rule you set.
  30
  31 A rule is a boolean expression that should return either `true` or `false` depending on post variables.
  32
  33 If the expression using a post variables returns `true`, the post will be collapsed and the matching rule name will be displayed above the collapsed content.
  34
  35 A post will be collapsed if at least one rule matches, but all matching rule names will be displayed above the collapsed content.
  36
  37 ## Examples
  38
  39
  40
  41 ## Expression Syntax
  42
  43 1. To block specific domains  `body matches "/\\.spiegel\\.de/"`
  44 2. To block everything that contains the words `body matches "/Guten Morgen/"
  45 3. To block every occurence of the word facebook with a space in front and after the word `body matches "//s facebook/s /"`
  46 4. To colapse every post that contains more than 1 image `body matches "/(?:(?:(?:\\[url(?:=.*)?\\])?\\[img(?:=.*)?\\].*\\[\\/img\\]\\s*(?:\\[\\/url\\])?)\\s*){2}/"`
  47
  48
  49
  50 ### Supported Literals
  51
  52 - **strings** - single and double quotes (e.g. `'hello'`).
  53 - **numbers** - e.g. `103`.
  54 - **arrays** - using JSON-like notation (e.g. `[1, 2]`).
  55 - **hashes** - using JSON-like notation (e.g. `{ foo: 'bar' }`).
  56 - **booleans** - `true` and `false`.
  57 - **null** - `null`.
  58
  59 A backslash (``\``) must be escaped by 2 backslashes (``\\``) in a string and 4 backslashes (``\\\\``) in a regex::
  60
  61 `"a\\b" matches "/^a\\\\b$/"`
  62
  63 Control characters (e.g. ``\n``) in expressions are replaced with whitespace. To avoid this, escape the sequence with a single backslash (e.g.  ``\\n``).
  64
  65 ### Supported Operators
  66
  67 The component comes with a lot of operators:
  68
  69 #### Arithmetic Operators
  70
  71 * ``+`` (addition)
  72 * ``-`` (subtraction)
  73 * ``*`` (multiplication)
  74 * ``/`` (division)
  75 * ``%`` (modulus)
  76 * ``**`` (pow)
  77
  78 #### Bitwise Operators
  79
  80 * ``&`` (and)
  81 * ``|`` (or)
  82 * ``^`` (xor)
  83
  84 #### Comparison Operators
  85
  86 * ``==`` (equal)
  87 * ``===`` (identical)
  88 * ``!=`` (not equal)
  89 * ``!==`` (not identical)
  90 * ``<`` (less than)
  91 * ``>`` (greater than)
  92 * ``<=`` (less than or equal to)
  93 * ``>=`` (greater than or equal to)
  94 * ``matches`` (regex match)
  95
  96 To test if a string does *not* match a regex, use the logical ``not`` operator in combination with the ``matches`` operator:
  97
  98 `not ("foo" matches "/bar/")`
  99
 100 You must use parenthesis because the unary operator ``not`` has precedence over the binary operator ``matches``.
 101
 102 #### Logical Operators
 103
 104 * ``not`` or ``!``
 105 * ``and`` or ``&&``
 106 * ``or`` or ``||``
 107
 108 #### String Operators
 109
 110 * ``~`` (concatenation)
 111
 112 For example: ``firstName ~ " " ~ lastName``
 113
 114 #### Array Operators
 115
 116 * ``in`` (contain)
 117 * ``not in`` (does not contain)
 118
 119 For example: ``user.group in ["human_resources", "marketing"]``
 120
 121 #### Numeric Operators
 122
 123 * ``..`` (range)
 124
 125 For example: ``user.age in 18..45``
 126
 127 #### Ternary Operators
 128
 129 * ``foo ? 'yes' : 'no'``
 130 * ``foo ?: 'no'`` (equal to ``foo ? foo : 'no'``)
 131 * ``foo ? 'yes'`` (equal to ``foo ? 'yes' : ''``)
 132
 133 ### Supported variables
 134
 135 Here are a sample of the available variables you can use in your expressions.
 136 You can also retrieve the variables of a specific post by pasting its URL below the rule list.
 137
 138 <table class="table-bordered table-condensed table-striped">
 139 <thead>
 140         <tr>
 141                 <th>Variable</th>
 142                 <th>Type</th>
 143                 <th>Sample Value</th>
 144         </tr>
 145 </thead>
 146 <tbody>
 147         <tr>
 148                 <th>author_id</th>
 149                 <td>number</td>
 150                 <td>6</td>
 151         </tr>
 152         <tr>
 153                 <th>author_link</th>
 154                 <td>string</td>
 155                 <td>https://friendica.mrpetovan.com/profile/hypolite</td>
 156         </tr>
 157         <tr>
 158                 <th>author_name</th>
 159                 <td>string</td>
 160                 <td>Hypolite Petovan</td>
 161         </tr>
 162         <tr>
 163                 <th>author_avatar</th>
 164                 <td>string</td>
 165                 <td>https://friendica.mrpetovan.com/photo/41084997915a94a8c83cc39708500207-5.png</td>
 166         </tr>
 167         <tr>
 168                 <th>owner_id</th>
 169                 <td>number</td>
 170                 <td>6</td>
 171         </tr>
 172         <tr>
 173                 <th>owner_link</th>
 174                 <td>string</td>
 175                 <td>https://friendica.mrpetovan.com/profile/hypolite</td>
 176         </tr>
 177         <tr>
 178                 <th>owner_name</th>
 179                 <td>string</td>
 180                 <td>Hypolite Petovan</td>
 181         </tr>
 182         <tr>
 183                 <th>owner_avatar</th>
 184                 <td>string</td>
 185                 <td>https://friendica.mrpetovan.com/photo/41084997915a94a8c83cc39708500207-5.png</td>
 186         </tr>
 187         <tr>
 188                 <th>contact_id</th>
 189                 <td>number</td>
 190                 <td>1</td>
 191         </tr>
 192         <tr>
 193                 <th>uid</th>
 194                 <td>number</td>
 195                 <td>1</td>
 196         </tr>
 197         <tr>
 198                 <th>id</th>
 199                 <td>number</td>
 200                 <td>791875</td>
 201         </tr>
 202         <tr>
 203                 <th>parent</th>
 204                 <td>number</td>
 205                 <td>791875</td>
 206         </tr>
 207         <tr>
 208                 <th>uri</th>
 209                 <td>string</td>
 210                 <td>urn:X-dfrn:friendica.mrpetovan.com:1:twit:978740198937907200</td>
 211         </tr>
 212         <tr>
 213                 <th>thr_parent</th>
 214                 <td>string</td>
 215                 <td>urn:X-dfrn:friendica.mrpetovan.com:1:twit:978740198937907200</td>
 216         </tr>
 217         <tr>
 218                 <th>parent_uri</th>
 219                 <td>string</td>
 220                 <td>urn:X-dfrn:friendica.mrpetovan.com:1:twit:978740198937907200</td>
 221         </tr>
 222         <tr>
 223                 <th>content_warning</th>
 224                 <td>string</td>
 225                 <td></td>
 226         </tr>
 227         <tr>
 228                 <th>commented</th>
 229                 <td>date</td>
 230                 <td>2018-03-27 21:10:18</td>
 231         </tr>
 232         <tr>
 233                 <th>created</th>
 234                 <td>date</td>
 235                 <td>2018-03-27 21:10:18</td>
 236         </tr>
 237         <tr>
 238                 <th>edited</th>
 239                 <td>date</td>
 240                 <td>2018-03-27 21:10:18</td>
 241         </tr>
 242         <tr>
 243                 <th>received</th>
 244                 <td>date</td>
 245                 <td>2018-03-27 21:10:18</td>
 246         </tr>
 247         <tr>
 248                 <th>verb</th>
 249                 <td>string</td>
 250                 <td>http://activitystrea.ms/schema/1.0/post</td>
 251         </tr>
 252         <tr>
 253                 <th>object_type</th>
 254                 <td>string</td>
 255                 <td>http://activitystrea.ms/schema/1.0/bookmark</td>
 256         </tr>
 257         <tr>
 258                 <th>postopts</th>
 259                 <td>string</td>
 260                 <td>twitter&lang=pidgin;0.24032407407407:english;0.225:french;0.18055555555556</td>
 261         </tr>
 262         <tr>
 263                 <th>plink</th>
 264                 <td>string</td>
 265                 <td>https://friendica.mrpetovan.com/display/735a2029995abab33a5c006052376776</td>
 266         </tr>
 267         <tr>
 268                 <th>guid</th>
 269                 <td>string</td>
 270                 <td>735a2029995abab33a5c006052376776</td>
 271         </tr>
 272         <tr>
 273                 <th>wall</th>
 274                 <td>boolean</td>
 275                 <td>1</td>
 276         </tr>
 277         <tr>
 278                 <th>private</th>
 279                 <td>boolean</td>
 280                 <td>0</td>
 281         </tr>
 282         <tr>
 283                 <th>starred</th>
 284                 <td>boolean</td>
 285                 <td>0</td>
 286         </tr>
 287         <tr>
 288                 <th>title</th>
 289                 <td>string</td>
 290                 <td></td>
 291         </tr>
 292         <tr>
 293                 <th>body</th>
 294                 <td>string</td>
 295                 <td>Over-compensation #[url=https://friendica.mrpetovan.com/search?tag=Street]Street[/url] #[url=https://friendica.mrpetovan.com/search?tag=Night]Night[/url] #[url=https://friendica.mrpetovan.com/search?tag=CarLights]CarLights[/url] #[url=https://friendica.mrpetovan.com/search?tag=Jeep]Jeep[/url] #[url=https://friendica.mrpetovan.com/search?tag=NoPeople]NoPeople[/url] #[url=https://friendica.mrpetovan.com/search?tag=Close]Close[/url]-up
 296         [attachment type='link' url='https://www.eyeem.com/p/120800309' title='Over-compensation Street Night Car Lights Jeep No | EyeEm' image='https://cdn.eyeem.com/thumb/b2f019738cbeef06e2f8c9517c6286a8adcd3a00-1522184820641/640/480']Photo by @[url=https://twitter.com/MrPetovan]MrPetovan[/url][/attachment]</td>
 297         </tr>
 298         <tr>
 299                 <th>file</th>
 300                 <td>string</td>
 301                 <td></td>
 302         </tr>
 303         <tr>
 304                 <th>event_id</th>
 305                 <td>number</td>
 306                 <td>null
 307         <tr>
 308                 <th>location</th>
 309                 <td>string</td>
 310                 <td></td>
 311         </tr>
 312         <tr>
 313                 <th>coord</th>
 314                 <td>string</td>
 315                 <td></td>
 316         </tr>
 317         <tr>
 318                 <th>app</th>
 319                 <td>string</td>
 320                 <td>EyeEm</td>
 321         </tr>
 322         <tr>
 323                 <th>attach</th>
 324                 <td>string</td>
 325                 <td></td>
 326         </tr>
 327         <tr>
 328                 <th>rendered_hash</th>
 329                 <td>string</td>
 330                 <td>b70abdea8b362dc5dcf63e1b2836ad89</td>
 331         </tr>
 332         <tr>
 333                 <th>rendered_html</th>
 334                 <td>string</td>
 335                 <td>
 336                         Over-compensation #&lt;a href="https://friendica.mrpetovan.com/search?tag=Street" class="tag" title="Street"&gt;Street&lt;/a&gt; #&lt;a href="https://friendica.mrpetovan.com/search?tag=Night" class="tag" title="Night"&gt;Night&lt;/a&gt; #&lt;a href="https://friendica.mrpetovan.com/search?tag=CarLights" class="tag" title="CarLights"&gt;CarLights&lt;/a&gt; #&lt;a href="https://friendica.mrpetovan.com/search?tag=Jeep" class="tag" title="Jeep"&gt;Jeep&lt;/a&gt; #&lt;a href="https://friendica.mrpetovan.com/search?tag=NoPeople" class="tag" title="NoPeople"&gt;NoPeople&lt;/a&gt; #&lt;a href="https://friendica.mrpetovan.com/search?tag=Close" class="tag" title="Close"&gt;Close&lt;/a&gt;-up &lt;div class="type-link"&gt;&lt;a href="https://www.eyeem.com/p/120800309" target="_blank"&gt;&lt;img src="https://friendica.mrpetovan.com/proxy/bb/aHR0cHM6Ly9jZG4uZXllZW0uY29tL3RodW1iL2IyZjAxOTczOGNiZWVmMDZlMmY4Yzk1MTdjNjI4NmE4YWRjZDNhMDAtMTUyMjE4NDgyMDY0MS82NDAvNDgw" alt="" title="Over-compensation Street Night Car Lights Jeep No | EyeEm" class="attachment-image"&gt;&lt;/a&gt;&lt;br&gt;&lt;h4&gt;&lt;a href="https://www.eyeem.com/p/120800309"&gt;Over-compensation Street Night Car Lights Jeep No | EyeEm&lt;/a&gt;&lt;/h4&gt;&lt;blockquote&gt;Photo by @&lt;a href="https://twitter.com/MrPetovan" class="userinfo mention" title="MrPetovan"&gt;MrPetovan&lt;/a&gt;&lt;/blockquote&gt;&lt;sup&gt;&lt;a href="https://www.eyeem.com/p/120800309"&gt;www.eyeem.com&lt;/a&gt;&lt;/sup&gt;&lt;/div&gt;
 337                 </td>
 338         </tr>
 339         <tr>
 340                 <th>object</th>
 341                 <td>string</td>
 342                 <td>{"created_at":"Tue Mar 27 21:07:02 +0000 2018","id":978740198937907200,"id_str":"978740198937907200","full_text":"Over-compensation #Street #Night #CarLights #Jeep #NoPeople #Close-up https:\/\/t.co\/7w4ua13QA7","truncated":false,"display_text_range":[0,93],"entities":{"hashtags":[{"text":"Street","indices":[18,25]},{"text":"Night","indices":[26,32]},{"text":"CarLights","indices":[33,43]},{"text":"Jeep","indices":[44,49]},{"text":"NoPeople","indices":[50,59]},{"text":"Close","indices":[60,66]}],"symbols":[],"user_mentions":[],"urls":[{"url":"https:\/\/t.co\/7w4ua13QA7","expanded_url":"http:\/\/EyeEm.com\/p\/120800309","display_url":"EyeEm.com\/p\/120800309","indices":[70,93]}]},"source":"&lt;a href=\"http:\/\/www.eyeem.com\" rel=\"nofollow\"&gt;EyeEm&lt;\/a&gt;","in_reply_to_status_id":null,"in_reply_to_status_id_str":null,"in_reply_to_user_id":null,"in_reply_to_user_id_str":null,"in_reply_to_screen_name":null,"user":{"id":403748896,"id_str":"403748896","name":"\ud83d\udc30yp\ud83e\udd5ali\u271d\ufe0fe Pet\ud83e\udd5avan","screen_name":"MrPetovan","location":"NYC","description":"White male form of milquetoast. Avatar by @DearMsDear inspired by @TSG_LAB.\n\nFriendica\/Diaspora\/Mastodon: hypolite@friendica.mrpetovan.com","url":"https:\/\/t.co\/PcARi5OhQO","entities":{"url":{"urls":[{"url":"https:\/\/t.co\/PcARi5OhQO","expanded_url":"https:\/\/mrpetovan.com","display_url":"mrpetovan.com","indices":[0,23]}]},"description":{"urls":[]}},"protected":false,"followers_count":182,"friends_count":146,"listed_count":15,"created_at":"Wed Nov 02 23:13:14 +0000 2011","favourites_count":45826,"utc_offset":-14400,"time_zone":"Eastern Time (US &amp; Canada)","geo_enabled":false,"verified":false,"statuses_count":15554,"lang":"en","contributors_enabled":false,"is_translator":false,"is_translation_enabled":false,"profile_background_color":"000000","profile_background_image_url":"http:\/\/pbs.twimg.com\/profile_background_images\/370213187\/fond_twitter_mrpetovan.png","profile_background_image_url_https":"https:\/\/pbs.twimg.com\/profile_background_images\/370213187\/fond_twitter_mrpetovan.png","profile_background_tile":false,"profile_image_url":"http:\/\/pbs.twimg.com\/profile_images\/968008546322395136\/6qLCiu0o_normal.jpg","profile_image_url_https":"https:\/\/pbs.twimg.com\/profile_images\/968008546322395136\/6qLCiu0o_normal.jpg","profile_banner_url":"https:\/\/pbs.twimg.com\/profile_banners\/403748896\/1464321684","profile_link_color":"0084B4","profile_sidebar_border_color":"C0DEED","profile_sidebar_fill_color":"DDEEF6","profile_text_color":"000000","profile_use_background_image":true,"has_extended_profile":true,"default_profile":false,"default_profile_image":false,"following":false,"follow_request_sent":false,"notifications":false,"translator_type":"none"},"geo":null,"coordinates":null,"place":null,"contributors":null,"is_quote_status":false,"retweet_count":0,"favorite_count":0,"favorited":false,"retweeted":false,"possibly_sensitive":false,"lang":"en"}</td>
 343         </tr>
 344         <tr>
 345                 <th>allow_cid</th>
 346                 <td>string</td>
 347                 <td></td>
 348         </tr>
 349         <tr>
 350                 <th>allow_gid</th>
 351                 <td>string</td>
 352                 <td></td>
 353         </tr>
 354         <tr>
 355                 <th>deny_cid</th>
 356                 <td>string</td>
 357                 <td></td>
 358         </tr>
 359         <tr>
 360                 <th>deny_gid</th>
 361                 <td>string</td>
 362                 <td></td>
 363         </tr>
 364         <tr>
 365                 <th>item_id</th>
 366                 <td>number</td>
 367                 <td>791875</td>
 368         </tr>
 369         <tr>
 370                 <th>item_network</th>
 371                 <td>string</td>
 372                 <td>dfrn</td>
 373         </tr>
 374         <tr>
 375                 <th>author_thumb</th>
 376                 <td>string</td>
 377                 <td>https://friendica.mrpetovan.com/photo/0cb3d7231eb751139d7d309c7c686c49-5.png?ts=1522941604</td>
 378         </tr>
 379         <tr>
 380                 <th>owner_thumb</th>
 381                 <td>string</td>
 382                 <td>https://friendica.mrpetovan.com/photo/0cb3d7231eb751139d7d309c7c686c49-5.png?ts=1522941604</td>
 383         </tr>
 384         <tr>
 385                 <th>network</th>
 386                 <td>string</td>
 387                 <td></td>
 388         </tr>
 389         <tr>
 390                 <th>url</th>
 391                 <td>string</td>
 392                 <td>https://friendica.mrpetovan.com/profile/hypolite</td>
 393         </tr>
 394         <tr>
 395                 <th>name</th>
 396                 <td>string</td>
 397                 <td>Hypolite Petovan</td>
 398         </tr>
 399         <tr>
 400                 <th>writable</th>
 401                 <td>boolean</td>
 402                 <td>0</td>
 403         </tr>
 404         <tr>
 405                 <th>self</th>
 406                 <td>boolean</td>
 407                 <td>1</td>
 408         </tr>
 409         <tr>
 410                 <th>cid</th>
 411                 <td>number</td>
 412                 <td>1</td>
 413         </tr>
 414         <tr>
 415                 <th>alias</th>
 416                 <td>string</td>
 417                 <td></td>
 418         </tr>
 419         <tr>
 420                 <th>event_created</th>
 421                 <td>date</td>
 422                 <td>null</td>
 423         </tr>
 424         <tr>
 425                 <th>event_edited</th>
 426                 <td>date</td>
 427                 <td>null</td>
 428         </tr>
 429         <tr>
 430                 <th>event_start</th>
 431                 <td>date</td>
 432                 <td>null</td>
 433         </tr>
 434         <tr>
 435                 <th>event_finish</th>
 436                 <td>date</td>
 437                 <td>null</td>
 438         </tr>
 439         <tr>
 440                 <th>event_summary</th>
 441                 <td>string</td>
 442                 <td>null</td>
 443         </tr>
 444         <tr>
 445                 <th>event_desc</th>
 446                 <td>string</td>
 447                 <td>null</td>
 448         </tr>
 449         <tr>
 450                 <th>event_location</th>
 451                 <td>string</td>
 452                 <td>null</td>
 453         </tr>
 454         <tr>
 455                 <th>event_type</th>
 456                 <td>string</td>
 457                 <td>null</td>
 458         </tr>
 459         <tr>
 460                 <th>event_nofinish</th>
 461                 <td>string</td>
 462                 <td>null</td>
 463         </tr>
 464         <tr>
 465                 <th>event_adjust</th>
 466                 <td>boolean</td>
 467                 <td>null</td>
 468         </tr>
 469         <tr>
 470                 <th>event_ignore</th>
 471                 <td>boolean</td>
 472                 <td>null</td>
 473         </tr>
 474         <tr>
 475                 <th>pagedrop</th>
 476                 <td>string</td>
 477                 <td>true</td>
 478         </tr>
 479         <tr>
 480                 <th>tags</th>
 481                 <td>list</td>
 482                 <td>
 483                         <ol start="0">
 484                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Street" target="_blank"&gt;street&lt;/a&gt;</li>
 485                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Night" target="_blank"&gt;night&lt;/a&gt;</li>
 486                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=CarLights" target="_blank"&gt;carlights&lt;/a&gt;</li>
 487                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Jeep" target="_blank"&gt;jeep&lt;/a&gt;</li>
 488                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=NoPeople" target="_blank"&gt;nopeople&lt;/a&gt;</li>
 489                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Close" target="_blank"&gt;close&lt;/a&gt;</li>
 490                                 <li>@&lt;a href="https://twitter.com/MrPetovan" target="_blank"&gt;mrpetovan&lt;/a&gt;</li>
 491                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Close-up" target="_blank"&gt;close-up&lt;/a&gt;</li>
 492                         </ol>
 493                 </td>
 494         </tr>
 495         <tr>
 496                 <th>hashtags</th>
 497                 <td>list</td>
 498                 <td>
 499                         <ol start="0">
 500                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Street" target="_blank"&gt;street&lt;/a&gt;</li>
 501                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Night" target="_blank"&gt;night&lt;/a&gt;</li>
 502                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=CarLights" target="_blank"&gt;carlights&lt;/a&gt;</li>
 503                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Jeep" target="_blank"&gt;jeep&lt;/a&gt;</li>
 504                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=NoPeople" target="_blank"&gt;nopeople&lt;/a&gt;</li>
 505                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Close" target="_blank"&gt;close&lt;/a&gt;</li>
 506                                 <li>#&lt;a href="https://friendica.mrpetovan.com/search?tag=Close-up" target="_blank"&gt;close-up&lt;/a&gt;</li>
 507                         </ol>
 508                 </td>
 509         </tr>
 510         <tr>
 511                 <th>mentions</th>
 512                 <td>string</td>
 513                 <td>
 514                         <ol start="0">
 515                                 <li>@&lt;a href="https://twitter.com/MrPetovan" target="_blank"&gt;mrpetovan&lt;/a&gt;</li>
 516                         </ol>
 517                 </td>
 518         </tr>
 519 </tbody>
 520 </table>