1. Building your first
WordPress plugin
●
Justin Foell
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Developer at 9seeds
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justin@9seeds.com
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@justinfoell
2. I found some sweet code,
where does it go?
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Let's look at an example: admin bar
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Pitfalls of adding it to functions.php
3. When should code go in a
theme's functions.php?
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One question:
Would you still want the feature if the
theme was changed?
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If YES, put it in a plugin
● If NO, you can put it in functions.php, but
consider renaming the theme or creating a
child theme to avoid upgrade issues
4. Holy crap! Plugins sound hard!
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Writing a Plugin Documentation
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Let's start with the bare minimum
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Who knows how to type?
●
You can build a plugin!
6. Going beyond WordPress basics
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I can't upload a certain file type
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There's a fix for that: upload types
7. Plugins can be as big or small as
you want
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If you have a feature that you might want to
turn on/off independently of others:
Put it in it's own plugin
Example: Disable upgrade notice
8. Getting Advanced: shortcode
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“Snippets” are a gateway into WordPress
customization
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Advanced example:
PayPal donation shortcode
9. Other Examples
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Shortcodes in widgets
I'm not sure why the “Text” widget doesn't
do this already – how to fix
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Audience Examples?
10. Be careful out there!
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But don't be afraid to experiment
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Create another WordPress instance to test
●
I havent (yet) seen a “malicious”
WordPress code snippet
●
Some examples may be out of date, overly
complex, or blatantly wrong
11. Knowing your limits
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Copying & Pasting will probably only get
you so far
●
If an example is very long, there's a chance
it might already be a plugin – look there in
stead
●
Consult you friendly local developer – a
local WordPress meetup (and/or mailing
list) is probably your best bet
