#579 Include a PF image from a public WW

[Jonathan Dushoff]

Is there a recommended way to do this? See http://lalashan.mcmaster.ca/theobio/math/index.php/Don%27t_accept_the_null_hypothesis!/clarity (public page) for a common kind of failed attempt.

[Anonymous]

Does that work with other image URLs? I don't know much about including
remote images in wikitext.

OTOH, <project-file filename="vitamins.Rout-1.png" project="pe-ww:http://lalashan.mcmaster.ca/theobio/mmed:CI_diagrams"/>
seems to work, though it seems to have problems displaying it during
preview. I'll work on that bug.

I'd say either approach is recommended (though I don't know what syntax
to use in wikitext). I'd use the WW syntax if you want it to remake the
file on demand, and use wikitext image inclusion
(http://www.mediawiki.org/wiki/Help:Images,
http://www.mediawiki.org/wiki/Manual:$wgAllowExternalImages) if you want
more control over the image size, placement, etc.

[Lee Worden]

I'd use the WW syntax if you want it to remake the
file on demand

though come to think of it, using that GetProjectFile URL also allows you to have it remake on demand

[Lee Worden]

I'll work on that bug.

Fixed: see [#580].

[Lee Worden]

JD - whenever you get to this, please let me know if you need further response, or if we should close this ticket.

[Jonathan Dushoff]

I responded to the ticket.

JD

On Tue, Jul 15, 2014 at 7:59 PM, Lee Worden worden@users.sf.net wrote:

JD - whenever you get to this, please let me know if you need further
response, or if we should close this ticket.

---

[bugs:#579] Include a PF image from a public WW

Status: open
Group: workingwiki
Created: Tue Jul 15, 2014 09:10 AM UTC by Jonathan Dushoff
Last Updated: Tue Jul 15, 2014 11:57 PM UTC
Owner: nobody

Is there a recommended way to do this? See
http://lalashan.mcmaster.ca/theobio/math/index.php/Don%27t_accept_the_null_hypothesis!/clarity
(public page) for a common kind of failed attempt.

---

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[Jonathan Dushoff]

Yes, my syntax works perfectly with ordinary image URLs, and AFAIK is the only way to get decent control over an external image on a wiki. I have now made a page with links to two identical-looking figures, included with identical syntax, but only one works. I guess it's something about how WW "serves" the GPF call, but it could also be something security-minded in WW (about the "get" parameters).

http://lalashan.mcmaster.ca/theobio/math/index.php?title=Don%27t_accept_the_null_hypothesis!/image_syntax

[Lee Worden]

Thank you for clarifying. I agree we want those to do the same thing.
I'll look into it.

[Lee Worden]

I guess it's something about how WW "serves" the GPF call,

I kind of thought it would be something like this too, but

but it could also be something security-minded in WW (about the "get" parameters).

Actually it looks like it's something like this. Given this wikitext:

Make our desired image into an APF, and use [http://lalashan.mcmaster.ca/theobio/mmed/images/2/20/CI_diagrams%24vitamins.Rout.0.png the Mediawiki location]:
<img src=http://lalashan.mcmaster.ca/theobio/mmed/images/2/20/CI_diagrams%24vitamins.Rout.0.png width=70% alt="Effects of vitamins on three health indicators in fake children, with confidence intervals"/>

Use the same image syntax, with the same image, but with the [http://lalashan.mcmaster.ca/theobio/mmed/index.php/Special:GetProjectFile?project=CI_diagrams&make=false&display=raw&filename=vitamins.Rout-0.png GPF-based URL:]
<img src=http://lalashan.mcmaster.ca/theobio/mmed/index.php/Special:GetProjectFile?project=CI_diagrams&make=false&display=raw&filename=vitamins.Rout-0.png width=70% alt="Effects of vitamins on three health indicators in fake children, with confidence intervals"/>

And again, with variant GPF-based URL:
<img src=http://lalashan.mcmaster.ca/theobio/mmed/index.php/Special:GetProjectFile/project=CI_diagrams/make=false/display=raw/vitamins.Rout-0.png width=70% alt="Effects of vitamins on three health indicators in fake children, with confidence intervals"/>

the parser is producing this HTML:

<p>Make our desired image into an APF, and use <a rel="nofollow" class="external text" href="http://lalashan.mcmaster.ca/theobio/mmed/images/2/20/CI_diagrams%24vitamins.Rout.0.png">the Mediawiki location</a>:
<img src="http://lalashan.mcmaster.ca/theobio/mmed/images/2/20/CI_diagrams%24vitamins.Rout.0.png" width="70%" alt="Effects of vitamins on three health indicators in fake children, with confidence intervals" /></p>
<p>Use the same image syntax, with the same image, but with the <a rel="nofollow" class="external text" href="http://lalashan.mcmaster.ca/theobio/mmed/index.php/Special:GetProjectFile?project=CI_diagrams&amp;make=false&amp;display=raw&amp;filename=vitamins.Rout-0.png">GPF-based URL:</a>
<img width="70%" alt="Effects of vitamins on three health indicators in fake children, with confidence intervals" /></p>
<p>And again, with variant GPF-based URL:
<img width="70%" alt="Effects of vitamins on three health indicators in fake children, with confidence intervals" /></p>

That is, it appears to be suppressing the src attribute from the last 2. I'll look into whether it rejects Special: urls or something. The third test, which I added above, rules out GET parameters as the cause.

[Lee Worden]

From a couple other test previews, I think that it doesn't recognize image URLs containing the '=' character.

... yes, replacing all '=' characters with its encoding '%3D' does work, in the variant URL syntax that also avoids use of '?' and '&':

<img src=http://lalashan.mcmaster.ca/theobio/mmed/index.php/Special:GetProjectFile/project%3DCI_diagrams/make%3Dfalse/display%3Draw/vitamins.Rout-0.png width=70% alt="Effects of vitamins on three health indicators in fake children, with confidence intervals"/>

Updated http://lalashan.mcmaster.ca/theobio/math/index.php/Don%27t_accept_the_null_hypothesis!/image_syntax with this working example.

Hope that helps!

[Lee Worden]

It's possible, though I haven't tried, that this situation might be improved by adding something to the image whitelist (http://www.mediawiki.org/wiki/Manual:$wgEnableImageWhitelist)