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<title>[BuddyPress][8131] trunk: Return an empty string from get_meta() functions when no value is found</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://buddypress.trac.wordpress.org/changeset/8131">8131</a></dd>
<dt>Author</dt> <dd>boonebgorges</dd>
<dt>Date</dt> <dd>2014-03-14 00:37:28 +0000 (Fri, 14 Mar 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Return an empty string from get_meta() functions when no value is found

BP get_meta() functions have been inconsistent about the type of value returned
when no match is found for the object_id+meta_key combination. In some cases,
we followed WP's get_metadata() and returned an empty string. In others, we
returned false.

This changeset aligns all of our get_meta() functions with WP in this regard,
returning an empty string when no matching value is found. A boolean false is
still returned when invalid arguments are passed to the functions.

Relevant unit tests have been updated, including strict assertSame() checking
where appropriate.

See <a href="http://buddypress.trac.wordpress.org/ticket/5399">#5399</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkbpactivitybpactivityfunctionsphp">trunk/bp-activity/bp-activity-functions.php</a></li>
<li><a href="#trunkteststestcasesactivityclassBP_Activity_Activityphp">trunk/tests/testcases/activity/class.BP_Activity_Activity.php</a></li>
<li><a href="#trunkteststestcasesactivityfunctionsphp">trunk/tests/testcases/activity/functions.php</a></li>
<li><a href="#trunkteststestcasesblogsfunctionsphp">trunk/tests/testcases/blogs/functions.php</a></li>
<li><a href="#trunkteststestcasesgroupsfunctionsphp">trunk/tests/testcases/groups/functions.php</a></li>
<li><a href="#trunkteststestcasesxprofilefunctionsphp">trunk/tests/testcases/xprofile/functions.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkbpactivitybpactivityfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/bp-activity/bp-activity-functions.php (8130 => 8131)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/bp-activity/bp-activity-functions.php      2014-03-14 00:15:41 UTC (rev 8130)
+++ trunk/bp-activity/bp-activity-functions.php 2014-03-14 00:37:28 UTC (rev 8131)
</span><span class="lines">@@ -637,19 +637,14 @@
</span><span class="cx">                  $values[] = $found;
</span><span class="cx">          }
</span><span class="cx"> 
</span><del>-               // If nothing was found, return false
</del><ins>+                // If nothing was found, return empty string
</ins><span class="cx">           if ( empty( $values ) ) {
</span><del>-                       $retval = false;
</del><ins>+                        $retval = '';
</ins><span class="cx">           } else {
</span><span class="cx">                  $retval = $values;
</span><span class="cx">          }
</span><span class="cx">  }
</span><span class="cx"> 
</span><del>-       // Legacy - On failure, expect false, not an empty string
-       if ( '' === $retval ) {
-               $retval = false;
-       }
-
</del><span class="cx">   // Filter result before returning
</span><span class="cx">  return apply_filters( 'bp_activity_get_meta', $retval, $activity_id, $meta_key, $single );
</span><span class="cx"> }
</span></span></pre></div>
<a id="trunkteststestcasesactivityclassBP_Activity_Activityphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/testcases/activity/class.BP_Activity_Activity.php (8130 => 8131)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/testcases/activity/class.BP_Activity_Activity.php    2014-03-14 00:15:41 UTC (rev 8130)
+++ trunk/tests/testcases/activity/class.BP_Activity_Activity.php       2014-03-14 00:37:28 UTC (rev 8131)
</span><span class="lines">@@ -64,7 +64,7 @@
</span><span class="cx">          BP_Activity_Activity::delete_activity_meta_entries( $activity );
</span><span class="cx"> 
</span><span class="cx">          $meta = bp_activity_get_meta( $activity, 'Paul' );
</span><del>-               $this->assertFalse( $meta );
</del><ins>+                $this->assertSame( '', $meta );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span></span></pre></div>
<a id="trunkteststestcasesactivityfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/testcases/activity/functions.php (8130 => 8131)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/testcases/activity/functions.php     2014-03-14 00:15:41 UTC (rev 8130)
+++ trunk/tests/testcases/activity/functions.php        2014-03-14 00:37:28 UTC (rev 8131)
</span><span class="lines">@@ -132,7 +132,7 @@
</span><span class="cx">          $krazy_key = ' f!@#$%^o *(){}o?+';
</span><span class="cx">          bp_activity_update_meta( $a, $krazy_key, 'bar' );
</span><span class="cx"> 
</span><del>-               $this->assertEmpty( bp_activity_get_meta( $a, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -154,7 +154,7 @@
</span><span class="cx">  public function test_bp_activity_update_meta_false_value_deletes() {
</span><span class="cx">          $a = $this->factory->activity->create();
</span><span class="cx">          bp_activity_update_meta( $a, 'foo', false );
</span><del>-               $this->assertFalse( bp_activity_get_meta( $a, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -163,7 +163,7 @@
</span><span class="cx">   */
</span><span class="cx">  public function test_bp_activity_update_meta_new() {
</span><span class="cx">          $a = $this->factory->activity->create();
</span><del>-               $this->assertFalse( bp_activity_get_meta( $a, 'foo' ), '"foo" meta should be empty for this activity item.' );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ), '"foo" meta should be empty for this activity item.' );
</ins><span class="cx">           $this->assertTrue( bp_activity_update_meta( $a, 'foo', 'bar' ) );
</span><span class="cx">          $this->assertSame( 'bar', bp_activity_get_meta( $a, 'foo' ) );
</span><span class="cx">  }
</span><span class="lines">@@ -238,7 +238,7 @@
</span><span class="cx">          bp_activity_update_meta( $a, 'foo', 'bar' );
</span><span class="cx"> 
</span><span class="cx">          $krazy_key = ' f!@#$%^o *(){}o?+';
</span><del>-               $this->assertEmpty( bp_activity_get_meta( $a, $krazy_key ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, $krazy_key ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -269,12 +269,12 @@
</span><span class="cx">  /**
</span><span class="cx">   * @group bp_activity_get_meta
</span><span class="cx">   * @group activitymeta
</span><ins>+        * @ticket BP5399
</ins><span class="cx">    */
</span><span class="cx">  public function test_bp_activity_get_meta_no_results_returns_false() {
</span><span class="cx">          $a = $this->factory->activity->create();
</span><span class="cx"> 
</span><del>-               // @todo this is a quirk
-               $this->assertFalse( bp_activity_get_meta( $a, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -346,7 +346,7 @@
</span><span class="cx">          $a = $this->factory->activity->create();
</span><span class="cx">          bp_activity_update_meta( $a, 'foo', 'bar' );
</span><span class="cx">          $this->assertTrue( bp_activity_delete_meta( $a, 'foo', 'bar' ) );
</span><del>-               $this->assertFalse( bp_activity_get_meta( $a, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -358,8 +358,8 @@
</span><span class="cx">          bp_activity_update_meta( $a, 'foo', 'bar' );
</span><span class="cx">          bp_activity_update_meta( $a, 'foo1', 'bar1' );
</span><span class="cx">          $this->assertTrue( bp_activity_delete_meta( $a ) );
</span><del>-               $this->assertFalse( bp_activity_get_meta( $a, 'foo' ) );
-               $this->assertFalse( bp_activity_get_meta( $a, 'foo1' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ) );
+               $this->assertSame( '', bp_activity_get_meta( $a, 'foo1' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -370,7 +370,7 @@
</span><span class="cx">          $a = $this->factory->activity->create();
</span><span class="cx">          bp_activity_update_meta( $a, 'foo', 'bar' );
</span><span class="cx">          $this->assertTrue( bp_activity_delete_meta( $a, 'foo', 'bar' ) );
</span><del>-               $this->assertFalse( bp_activity_get_meta( $a, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a, 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -408,8 +408,8 @@
</span><span class="cx">          bp_activity_update_meta( $a2, 'foo1', 'bar1' );
</span><span class="cx"> 
</span><span class="cx">          $this->assertTrue( bp_activity_delete_meta( $a1, 'foo', '', true ) );
</span><del>-               $this->assertEmpty( '', bp_activity_get_meta( $a1, 'foo' ) );
-               $this->assertEmpty( '', bp_activity_get_meta( $a2, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_activity_get_meta( $a1, 'foo' ) );
+               $this->assertSame( '', bp_activity_get_meta( $a2, 'foo' ) );
</ins><span class="cx">           $this->assertSame( 'bar1', bp_activity_get_meta( $a1, 'foo1' ) );
</span><span class="cx">          $this->assertSame( 'bar1', bp_activity_get_meta( $a2, 'foo1' ) );
</span><span class="cx">  }
</span></span></pre></div>
<a id="trunkteststestcasesblogsfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/testcases/blogs/functions.php (8130 => 8131)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/testcases/blogs/functions.php        2014-03-14 00:15:41 UTC (rev 8130)
+++ trunk/tests/testcases/blogs/functions.php   2014-03-14 00:37:28 UTC (rev 8131)
</span><span class="lines">@@ -93,8 +93,8 @@
</span><span class="cx">          bp_blogs_add_blogmeta( 2, 'foo1', 'bar1' );
</span><span class="cx"> 
</span><span class="cx">          $this->assertTrue( bp_blogs_delete_blogmeta( 1, 'foo', '', true ) );
</span><del>-               $this->assertEmpty( '', bp_blogs_get_blogmeta( 1, 'foo' ) );
-               $this->assertEmpty( '', bp_blogs_get_blogmeta( 2, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_blogs_get_blogmeta( 1, 'foo' ) );
+               $this->assertSame( '', bp_blogs_get_blogmeta( 2, 'foo' ) );
</ins><span class="cx">           $this->assertSame( 'bar1', bp_blogs_get_blogmeta( 1, 'foo1' ) );
</span><span class="cx">          $this->assertSame( 'bar1', bp_blogs_get_blogmeta( 2, 'foo1' ) );
</span><span class="cx">  }
</span><span class="lines">@@ -116,7 +116,7 @@
</span><span class="cx">  public function test_bp_blogs_get_blogmeta_illegal_characters() {
</span><span class="cx">          bp_blogs_update_blogmeta( 1, 'foo', 'bar' );
</span><span class="cx">          $krazy_key = ' f!@#$%^o *(){}o?+';
</span><del>-               $this->assertEmpty( bp_blogs_get_blogmeta( 1, $krazy_key ) );
</del><ins>+                $this->assertSame( '', bp_blogs_get_blogmeta( 1, $krazy_key ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -174,7 +174,7 @@
</span><span class="cx">  public function test_bp_blogs_update_blogmeta_illegal_characters() {
</span><span class="cx">          $krazy_key = ' f!@#$%^o *(){}o?+';
</span><span class="cx">          bp_blogs_update_blogmeta( 1, $krazy_key, 'bar' );
</span><del>-               $this->assertEmpty( bp_blogs_get_blogmeta( 1, 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_blogs_get_blogmeta( 1, 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span></span></pre></div>
<a id="trunkteststestcasesgroupsfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/testcases/groups/functions.php (8130 => 8131)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/testcases/groups/functions.php       2014-03-14 00:15:41 UTC (rev 8130)
+++ trunk/tests/testcases/groups/functions.php  2014-03-14 00:37:28 UTC (rev 8131)
</span><span class="lines">@@ -307,7 +307,7 @@
</span><span class="cx">   */
</span><span class="cx">  public function test_groups_update_groupmeta_new() {
</span><span class="cx">          $g = $this->factory->group->create();
</span><del>-               $this->assertEquals( '', groups_get_groupmeta( $g, 'foo' ), '"foo" meta should be empty for this group.' );
</del><ins>+                $this->assertSame( '', groups_get_groupmeta( $g, 'foo' ), '"foo" meta should be empty for this group.' );
</ins><span class="cx">           $this->assertTrue( groups_update_groupmeta( $g, 'foo', 'bar' ) );
</span><span class="cx">          $this->assertSame( 'bar', groups_get_groupmeta( $g, 'foo' ) );
</span><span class="cx">  }
</span><span class="lines">@@ -364,7 +364,7 @@
</span><span class="cx">          groups_update_groupmeta( $g, 'foo', 'bar' );
</span><span class="cx"> 
</span><span class="cx">          $krazy_key = ' f!@#$%^o *(){}o?+';
</span><del>-               $this->assertEmpty( groups_get_groupmeta( $g, $krazy_key ) );
</del><ins>+                $this->assertSame( '', groups_get_groupmeta( $g, $krazy_key ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -508,8 +508,8 @@
</span><span class="cx">          groups_add_groupmeta( $g2, 'foo1', 'bar1' );
</span><span class="cx"> 
</span><span class="cx">          $this->assertTrue( groups_delete_groupmeta( $g1, 'foo', '', true ) );
</span><del>-               $this->assertEmpty( '', groups_get_groupmeta( $g1, 'foo' ) );
-               $this->assertEmpty( '', groups_get_groupmeta( $g2, 'foo' ) );
</del><ins>+                $this->assertSame( '', groups_get_groupmeta( $g1, 'foo' ) );
+               $this->assertSame( '', groups_get_groupmeta( $g2, 'foo' ) );
</ins><span class="cx">           $this->assertSame( 'bar1', groups_get_groupmeta( $g1, 'foo1' ) );
</span><span class="cx">          $this->assertSame( 'bar1', groups_get_groupmeta( $g2, 'foo1' ) );
</span><span class="cx">  }
</span></span></pre></div>
<a id="trunkteststestcasesxprofilefunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/testcases/xprofile/functions.php (8130 => 8131)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/testcases/xprofile/functions.php     2014-03-14 00:15:41 UTC (rev 8130)
+++ trunk/tests/testcases/xprofile/functions.php        2014-03-14 00:37:28 UTC (rev 8131)
</span><span class="lines">@@ -220,7 +220,7 @@
</span><span class="cx">          bp_xprofile_update_meta( $g, 'group', 'foo', 'bar' );
</span><span class="cx">          $this->assertSame( 'bar', bp_xprofile_get_meta( $g, 'group', 'foo' ) );
</span><span class="cx">          $this->assertTrue( bp_xprofile_delete_meta( $g, 'group', 'foo', 'bar' ) );
</span><del>-               $this->assertEquals( '', bp_xprofile_get_meta( $g, 'group', 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_xprofile_get_meta( $g, 'group', 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -236,8 +236,8 @@
</span><span class="cx"> 
</span><span class="cx">          $this->assertTrue( bp_xprofile_delete_meta( $g, 'group' ) );
</span><span class="cx"> 
</span><del>-               $this->assertEquals( '', bp_xprofile_get_meta( $g, 'group', 'foo' ) );
-               $this->assertEquals( '', bp_xprofile_get_meta( $g, 'group', 'foo2' ) );
</del><ins>+                $this->assertSame( '', bp_xprofile_get_meta( $g, 'group', 'foo' ) );
+               $this->assertSame( '', bp_xprofile_get_meta( $g, 'group', 'foo2' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><span class="lines">@@ -275,8 +275,8 @@
</span><span class="cx">          bp_xprofile_add_meta( $g2, 'group', 'foo1', 'bar1' );
</span><span class="cx"> 
</span><span class="cx">          $this->assertTrue( bp_xprofile_delete_meta( $g1, 'group', 'foo', '', true ) );
</span><del>-               $this->assertEmpty( '', bp_xprofile_get_meta( $g1, 'group', 'foo' ) );
-               $this->assertEmpty( '', bp_xprofile_get_meta( $g2, 'group', 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_xprofile_get_meta( $g1, 'group', 'foo' ) );
+               $this->assertSame( '', bp_xprofile_get_meta( $g2, 'group', 'foo' ) );
</ins><span class="cx">           $this->assertSame( 'bar1', bp_xprofile_get_meta( $g1, 'group', 'foo1' ) );
</span><span class="cx">          $this->assertSame( 'bar1', bp_xprofile_get_meta( $g2, 'group', 'foo1' ) );
</span><span class="cx">  }
</span><span class="lines">@@ -385,7 +385,7 @@
</span><span class="cx">          $g = $this->factory->xprofile_group->create();
</span><span class="cx">          $krazy_key = ' f!@#$%^o *(){}o?+';
</span><span class="cx">          bp_xprofile_update_meta( $g, 'group', $krazy_key, 'bar' );
</span><del>-               $this->assertEmpty( bp_xprofile_get_meta( $g, 'group', 'foo' ) );
</del><ins>+                $this->assertSame( '', bp_xprofile_get_meta( $g, 'group', 'foo' ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span></span></pre>
</div>
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