Extension talk:Cargo

gallery error
If i have a blank field it will error. dunno if you can catch and handle that.

Fatal error: Call to a member function getText on a non-object in /home2/juanitos/public_html/w/w/includes/gallery/ImageGalleryBase.php on line 235


 * Sorry about that, and thanks for letting me know. I just checked in what I think is a fix... Yaron Koren (talk) 23:24, 8 June 2015 (UTC)

Using Queries Operator
Is it possible to use queries operators like 'minus' http://www.techonthenet.com/sql/minus.php ? Guillaume Prêcheur (talk) 12:52, 10 June 2015 (UTC)


 * You can't use "MINUS". Is that a standard SQL operator? It seems like it only exists for Oracle... Yaron Koren (talk) 13:37, 10 June 2015 (UTC)

map display stopped working..
i dunno why but my map display stopped working. It works fine on the semantic forms edit page but on the cargo display it failed. I'm not too sure if this is directly caused by cargo or something else.

inspect the element below the Location heading http://pepperdatabase.org/wiki/Juanitos_2015_Grow


 * It displays for me, actually. I think there's a problem with Cargo's Google Maps implementation where sometimes things get loaded in the wrong order. Most of the time it works, though. If you reload a few times, does the map never show up? Yaron Koren (talk) 16:29, 17 June 2015 (UTC)


 * Ok it doesn't display at all on google chrome canary, works ok after i refresh a couple times in chrome and works with IE. guess they did something funky on canary

Problems in Cargo 0.8/MW 1.25.1
Hi Yaron,

First of all - many thanks for such a brilliant extension! If not for you I would have to invent it by myown. I have also completely translated ru.json into Russian.

Still I got some problems. In most cases I found also workarounds.

The system: Mediawiki 1.25.1, Cargo 0.8 (latest master release), NO SMW installed.

'''Problem 1. Display of DATETIME.'''

I create a table with 2 standard fields, which will keep date/time of the creating and updating of the record:

Insert some data.

mysql> SELECT UpdatedDT, CreatedDT FROM cargo__Ads ; +-+-+ | UpdatedDT          | CreatedDT           | +-+-+ | 2015-06-26 16:57:48 | 2015-06-26 12:39:19 | +-+-+

'''Problem 1a. Rewriting of date/time values: the last one rewrites any previous. '''

|- ! Updated: |    |-  ! Created: |

Expected: two different date/time values.

Real: only CreatedDT in BOTH fields. The last value of type date/time completely rewrites any previous value.

Workaround: use additional cargo query: ! Updated: |  |-  ! Created: |

'''Problem 1b. English default formatting of date/time.'''

I use workaround from 1a.

Expected: 2015-06-26 16:57:48

Real: 2015-06-26 4:57:48 PM

The problem is that 1st variant is neutral and suitable for any language, while the 2nd - only for English-speaking audience.

Workaround:

use fake CONCAT in the cargo query or backticks around field name - ! Updated: |

'''Problem 1c. Unexpected date/time format.'''

I use MySQL function to format date/time:

Expected: 26.06.2015 16:57:48

Real: 2015-06-26

Workaround: Use additional CONCAT: CONCAT(DATE_FORMAT(UpdatedDT,'%d.%m.%Y'), DATE_FORMAT(UpdatedDT, ' %H:%i:%s'))

'''Problem 2. Special:CargoExport doesn't support compound_query with calendar format.'''

I have different types of events and want to display them with different colors in calendar. If I specify only ONE query - all is OK: If I specify more than one query - results in empty string from the backend:

With JavaScript debugger I discovered, that backend doesn't support notation like tables[1]...tables[n]: http://MYDOMAIN/index.php?title=Special:CargoExport&tables=Events&&fields=_pageName%2C_pageTitle%3Dname%2CStartDT&where=EventType%3DExhibition&order+by=_pageName&limit=100&format=fullcalendar&color[0]=green&start=2015-05-31&end=2015-07-12&_=1435356283321 - OK http://MYDOMAIN/index.php?title=Special:CargoExport&tables[0]=Events&tables[1]=Events&join+on[0]=&join+on[1]=&fields[0]=_pageName%2C_pageTitle%3Dname%2CStartDT&fields[1]=_pageName%2C_pageTitle%3Dname%2CStartDT&where[0]=EventType%3DExhibition&where[1]=EventType%3DMovie&group+by[0]=&group+by[1]=&order+by[0]=_pageName&order+by[1]=_pageName&limit[0]=100&limit[1]=100&format=fullcalendar&color[0]=green&color[1]=blue&start=2015-05-31&end=2015-07-12&_=1435356397824 - empty string.

'''Problem 3. Urlencoding of aliases.'''

I use following query with aliases in Russian: The query is broken, as aliases in clause ORDER BY are urlencoded. Workaround is simple - use backticks or apostrophs: `Начало` or 'Начало'.

But, first, MySQL and other databases permit field names in national languages (I use this feature rather often), second - urlencoding makes no sense in this place as the result will be broken 100%.

Once again - many thanks for this extension!!


 * I'm glad you like Cargo! And thank you for this detailed analysis. My responses:
 * 1a - the real solution for this is to have Cargo itself be able to store basic page data like when a page was first created, and when it was last edited. That's something I'm planning to add in. Until then, any attempt to store that kind of data manually will be a hack, as you've discovered.
 * 1b - Cargo needs a global variable to set whether to use 12-hour or 24-hour time; that has been a "todo" in the code for a long time. (It's not just English-speaking countries that use 12-hour time, but your larger point stands.)
 * 1c - I have no idea why that's happening; do you?
 * 2 - this was the most serious problem you found. I looked into it, and you're right - it was a Cargo bug. I introduced the bug about a month ago, while fixing something else; I think I just fixed this bug in Git.
 * 3 - I'll have to look into that. Yaron Koren (talk) 00:43, 27 June 2015 (UTC)


 * Okay, I just checked in fixes for 1b and 3 as well. For 1b, I added in the new global variable $wgCargo24HourTime (default is false), which I have been meaning to do for a while. Yaron Koren (talk) 14:49, 29 June 2015 (UTC)
 * Dear Yaron, sorry for disappearance from the discussion - I have just returned to active programming and promise now to reply in time. :) I tested all changes made with Cargo 0.9.


 * Thanks for correcting bug 2. My calendar now shows all colors.


 * Bug 1b.

! Updated: |
 * I see no effect from variable $wgCargo24HourTime. False or true, the result is always English 12-hour format. If I apply

fields=CONCAT(UpdatedDT)


 * - the result is always 24-hour format.


 * But in any case - I have workarounds for the rest. Alexey Rudenko (talk) 20:42, 23 August 2015 (UTC)

bar chart label not interpreted as wiki text
The bar-chart's labels shown as query's result are not interpreted as wiki text. I tried to encapsulate a value with " " and "  " to create a link to a wiki page inside my bar chart , it doesn't work, it just show me the values inside the " " and "  " as you can see :



any idea ? Guillaume Prêcheur (talk) 16:26, 30 June 2015 (UTC)


 * That's on purpose, actually... parsing of values could be done, but the big reason to do it, and the reason you have as well - to display links - is unfortunately not doable with the JavaScript library being used to display bar charts, NVD3. At least, it's not doable without some custom JS programming, which would (I assume) be complicated. By the way, CONCAT can take more than two arguments, so you don't need to chain them like that - not that it matters in this case, though. Yaron Koren (talk) 19:30, 30 June 2015 (UTC)


 * thanks for the answer (an for the CONCAT lesson !) - Do you plan to integrate other kinds of graphic formats ?Guillaume Prêcheur (talk) 07:25, 1 July 2015 (UTC)


 * I don't have any specific plans - what did you have in mind? The obvious graphical format to add would be pie charts, but many of the data visualization people say that a bar chart is always better than a pie chart. Yaron Koren (talk) 13:40, 1 July 2015 (UTC)

Cargo 0.9 - outline fields
The request:

First page displays correctly. When I click on more results... link below, I get internal error:

[cf28a627] /index.php?title=Special:ViewData&tables=Articles%2CArticles__ArticleTypes&fields=_pageName%2CArticles__ArticleTypes._value%3DCategory&join_on=Articles._ID%3DArticles__ArticleTypes._rowID&order_by=Category%2C_pageName&format=outline&offset=50&limit=100&outline+fields=Category MWException from line 157 of /www/chileru.org/extensions/Cargo_0.9/formats/CargoOutlineFormat.php: Error: 'outline fields' parameter must be set for 'outline' format. Backtrace:
 * 1) 0 /www/chileru.org/extensions/Cargo_0.9/CargoQueryDisplayer.php(236): CargoOutlineFormat->display(array, array, array, array)
 * 2) 1 /www/chileru.org/extensions/Cargo_0.9/specials/CargoViewData.php(240): CargoQueryDisplayer->displayQueryResults(CargoOutlineFormat, array)
 * 3) 2 /www/chileru.org/includes/specialpage/QueryPage.php(563): ViewDataPage->outputResults(OutputPage, SkinVector, DatabaseMysqli, ResultWrapper, integer, integer)
 * 4) 3 /www/chileru.org/extensions/Cargo_0.9/specials/CargoViewData.php(37): QueryPage->execute(NULL)
 * 5) 4 /www/chileru.org/includes/specialpage/SpecialPage.php(384): CargoViewData->execute(NULL)
 * 6) 5 /www/chileru.org/includes/specialpage/SpecialPageFactory.php(582): SpecialPage->run(NULL)
 * 7) 6 /www/chileru.org/includes/MediaWiki.php(267): SpecialPageFactory::executePath(Title, RequestContext)
 * 8) 7 /www/chileru.org/includes/MediaWiki.php(566): MediaWiki->performRequest
 * 9) 8 /www/chileru.org/includes/MediaWiki.php(414): MediaWiki->main
 * 10) 9 /www/chileru.org/index.php(41): MediaWiki->run
 * 11) 10 {main}

Supposing problem is in encoding of outline fields parameter as outline+fields. As a result this parameter is represented in CargoOutlineFormat->display as outline_fields with underscore.

I made dump of $displayParams in CargoOutlineFormat->display:

First page display: Array (   [outline fields] => Category )

Click on more results link: Array (   [limit] => 100    [outline_fields] => Category    [offset] => 50 )

Alexey Rudenko (talk) 21:01, 23 August 2015 (UTC)


 * Sorry about that, and thanks for your work in diagnosing the error. I just checked in what I think is a fix. Yaron Koren (talk) 15:40, 24 August 2015 (UTC)
 * Thank you! I downloaded the latest development version 0.10-alpha (Cargo-master-0b334b2.tar.gz) - the bug is fixed. Alexey Rudenko (talk) 16:49, 29 August 2015 (UTC)

MW 1.25.2 / Cargo 0.10 alpha
I install from the scratch MW 1.25.2 and Cargo 0.10 alpha via Distributor (no other extensions).

Run update.php. Tables cargo_pages and cargo_tables are created.

After that any "normal" page (not special) throws fatal error:

Catchable fatal error: Argument 1 passed to CargoRecreateDataAction::displayTab2 must be an instance of SkinTemplate, string given in /www/cargo.chileru.org/extensions/Cargo_0.10-alpha/CargoRecreateDataAction.php on line 97

The same happens in my working installation of MW 1.25.1, but I installed a new MW from the scratch to isolate the problem. What did I made wrong? Cargo extension is vitally important for my project, I would like to have its latest version. Thanks in advance! Alexey Rudenko (talk) 21:20, 23 August 2015 (UTC)


 * I just discovered this bug last week - it's actually a bug in MediaWiki 1.25-1.25.2, for extensions that use extension.json (like Cargo now does). It will be fixed in MediaWiki 1.25.3, but for now you can fix it yourself by putting in this change in your core MW code. Yaron Koren (talk) 02:37, 24 August 2015 (UTC)
 * I copied patched ExtensionProcessor_new-5523fe65955dbc14b87ad9dc0a08c3694fdd949d.php to includes/registration/ExtensionProcessor.php, ran update.php. Thank you, it works! Alexey Rudenko (talk) 13:20, 24 August 2015 (UTC)

MW 1.25.2 / Cargo any version
The SQL request includes MySQL function SUBSTRING_INDEX:

I get error: Error: the SQL function "SUBSTRING_INDEX" is not allowed.

If I replace SUBSTRING_INDEX with SUBSTRING - all works fine. No problems with SUBSTRING_INDEX from other PHP scripts o command line.

I am 100% sure, that with MW 1.24 it worked correctly. Tested with Cargo 0.6, 0.9, 0.10-alpha on MW 1.25.2. Any suggestions? Alexey Rudenko (talk) 15:18, 9 September 2015 (UTC)


 * This is not related to the MediaWiki version, it's just the Cargo version. It's my fault - I added the $wgCargoAllowedSQLFunctions variable to the code over a month ago, but I haven't released a new version, so the change is not documented yet. (I doubt you saw this same error with Cargo 0.6.) I think all you need to do is add the following to LocalSettings.php, after the inclusion of Cargo:

$wgCargoAllowedSQLFunctions[] = 'SUBSTRING_INDEX';
 * Yaron Koren (talk) 15:37, 9 September 2015 (UTC)

Error when trying to create tables
When going to the tab "Create data table" and hitting "ok" nothing happens. My FireBug reports: "TypeError: templateData is null" (twice)

What I did to get here:
 * got sources via git
 * ran update.php
 * database user with create/drop table rights (tested both: default mw-database settings and separate ones)
 * copied quick-start templates book and author from Extension:Cargo/Quick_start_guide

with TypeError: templateData is null https://HOST/_w/extensions/Cargo/libs/ext.cargo.recreatedata.js Line 16 for ( var i = 0; i < templateData.length; i++ ) { -^

It doesn't seem to matter, if I create pages that call the templates author or book. Also, I tried to use the maintenance script to create the tables. It ran for 1 or 2 sec and then exited without any output. And of course: no tables were created... :(

BTW, I'm running a german MediaWiki with: and a few other minor extensions.
 * MediaWiki 	1.23.10
 * PHP 	5.6
 * MySQL 	5.5
 * SemanticForms 3.4
 * Cargo 0.10-alpha

Also, setting error_reporting(E_ALL); ini_set ("display_errors", "1"); $wgShowExceptionDetails = true; $wgShowDebug = true; $wgDevelopmentWarnings = false; in my LocalSettings.php doesn't yield any more viable information. I'm at a loss and would appreciate any suggestion as to where to look next...

Regards, Tobias Oetterer (talk) 14:06, 23 September 2015 (UTC)


 * kept me awake (so to speak) and I think I found the problem:
 * was created but ext.cargo.recreatedata.js returned an empty object when trying to access it. So I supsected a failed race condition.
 * I then edited the section for 'ext.cargo.recreatedata' in  in Cargo.php and changed position to bottom:
 * 'position' => 'bottom',
 * Now it seems to work fine. No idea, if this breaks something else in the long run, though...
 * Tobias Oetterer (talk) 17:19, 23 September 2015 (UTC)


 * That's a great find! I don't know why that happened for you, but I'll make that change in the code. Yaron Koren (talk) 14:06, 24 September 2015 (UTC)

Cargo Template
Hi I'm trying to create a single template for a table. Looking at the example how would I add the query for the single table? I did create a template whether right or wrong and selected "create data table" came up with Create Cargo data for this template? I selected ok and nothing happened.

I can't find anything on the form layout is that the same as SMW?


 * If you go to Special:CargoTables, do you see the table? For the forms - the Semantic Forms documentation covers all of that, including the Cargo-specific stuff. Yaron Koren (talk) 14:17, 24 September 2015 (UTC)