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There Might
       (Not)
Be a Module For That
     Karen Stevenson
    Lullabot Consulting
Getting to Drupal
Core is Not Enough
Is There A Module For That?
The Process

Identify each problem/requirement
Find modules that solve it
Evaluate the quality & suitability of the solutions
Choose bet ween alternatives
If necessary, roll your own solution
Find Modules That
 Solve A Problem
Know the Top 20
/project/usage
/project/modules/categories
/project/modules
Search Issues Too!
Google It
Evaluate the Solutions
Well Maintained?

Number of committers and commits
How recently committed?
How many bugs relative to total issues?
Balance complexity of module against pure stats
Usage numbers and patterns
Code quality
Is It Well Maintained?
Which Version/Branch is Safe?
Check Usage Stats
Code Quality



Is it neat and well-documented?
Does it comply with Drupal coding standards?
Is there a lot of commented-out code?
How Well Does It Work?


Check those issue queues
Test drive
Dig for documentation
Google it
Mine the Issue Queues
Google It
Documentation
Look for README.txt or INSTALL.txt
Find ‘Configure’ and ‘Help’ links on module list
Look for documentation link on d.o. project page
Search Drupal.org or Groups.Drupal.org
Read the code
  Use hook_menu() to find configuration urls
  Look for internal documentation
Choosing Bet ween Alternatives
drupal.org/node/266179
Google It
Can you re-use this module?
Take Them For a Ride
Prototype

Set up a prototype site
Try out key modules
Create a content type and key fields
Use Devel Generate
  Make fields required
  Image min/max settings
That’s a Lot of Work!!
What if the Module Won’t Do?

Too many bugs
No solid release
Badly maintained
Badly written
Not a good fit
Bugs

Could it be operator error?
Did you try the dev version?
Is there a patch?
Can you write a patch?
Make sure the patch is posted and marked RTBC
Looking for co-maintainer?
Wrong Features


Can you adjust the requirements?
Is there a feature request?
Can you propose a patch?
Can you use it as-is for now and customize in phase 2?
Rolling Your Own

Google. Again.
Search d.o. sandbox projects.
There may be issues with code snippets to get you
started.
Can you make it work with existing modules and some
‘glue’, rather than a total custom solution?
Can you phase a custom solution in?
Contributing Back Code


Is this a problem others will have?
Is there an existing module that does something
similar?
Can you add a new feature to existing module?
Can you write code general enough for wide use?
Contributing Back


Describe what you learned
Add documentation
Test and bump patches
Add comparisons to drupal.org/node/266179
Validating Your Decisions

Be worried if:
  You jumped straight to custom code instead of
  looking for an existing solution
  You avoided a time-tested solution because it was
  missing one tiny feature
  You didn’t do your due diligence
Examples
Alternative Solutions for
 Address + Geolocation
  Solution #1           Solution #2

Location Module     Addressfield Module
   1,620 KB               52 KB

                      Geofield Module
                          32 KB

                     Geocoder Module
                          20 KB

                  GeoPHP Module + Library
                     110 KB + 193 KB
Statistics for Location
Statistics for Addressfield
Custom Code - Views Calc
Alternative Solutions for
          Multilingual
Content Translation or Entity Translation?
Contributing Back
  http://lullabot.com/articles/localized-and-multi-
  lingual-content-drupal-7
  Description and comparison of multilingual options
  Several pages of links to resources uncovered during
  research
Which Version for
           Organic Groups?
Version 71 or Version 7
         .             .2?
  Lack of documentation
  Problems in 71, Patches needed for 7
               .                      .2
Contributing Back:
  lullabot.com/articles/organic-groups-drupal-7
  drupalize.me/series/organic-groups-drupal-7
  drupal.org/project/og_extras
Other Examples

Features + Glue
  Views Gallery Module
Choosing Bet ween Alternatives
  CCK vs Flexinode
  Image module vs Imagefield
Custom Code

Views
Panels
Token
Date
Calendar
Questions??

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There Might (Not) Be a Module For That