Showing term id instead of term name

Sounds a lot like this issue: http://drupal.org/node/1608498
Perhaps you can work with the supplied patch in that thread to get the taxonomy terms working.

Marking as duplicate of #1608498: Selective filters show node id instead of title when filtering on node reference fields, where the community is working to produce a patch.

Sorry, this doesn't seem to be a duplicate with the narrow and node-specific direction #1608498 takes.
The proposed patch there is a no solution for the problem discussed here, since it is too node specific.
What about taxonomy based filters on term_reference fields for a taxonomy based view?
A lot of use cases are not based on nodes in Drupal 7.
We need a solution that isn't dependent on a specific base table (like node) but solves this bug in general.

I've made the following changes in views_handler_filter_selective.inc (based on ideas in http://drupal.org/node/1608498):

  function get_value_options() {
    $this->value_options = array(0 => t('Actual values will be available at run-time'));
    if (empty($this->view->selective_oids) && !empty($this->view->inited)) {
      $handler = _views_filters_selective_get_handler($this->definition['proxy']);
      $oids = $this->get_oids();
      $options = empty($oids) ? array() : call_user_func($handler, $this, $oids);
      sort($options);
      if (!empty($options)) {
        // Encode the values to keep special chars.
        $this->value_options = array_combine(array_map('urlencode', array_values($options)), array_values($options));
      }
+      // Modify value_options to include title for term node reference fields.
+      if ($this->definition['proxy'] == 'views_handler_filter_term_node_tid') {
+        foreach ($this->value_options as $tid) {
+          $result = db_query('SELECT name FROM {taxonomy_term_data} WHERE tid = :tid', array(':tid' => $tid));
+          $title = $result->fetchField();
+          if (!empty($title)) {
+            $this->value_options[$tid] = $title;
+          }
+        }
+        // resort results based on title
+        asort($this->value_options);
+      }
+      // Remove empty values
+      $this->value_options = array_diff_key($this->value_options , array("" => NULL));
    }
  }

The exposed filter shows term names for term referencing fieds and it works correctly for numeric fields.
Also it fixes a bug "Actual values will be available at run-time".

Hello phze,

I applied the code but still showing tid. Is there anything I need to change on your code?

Thanks,

The code changes tids on term names if the condition ($this->definition['proxy'] == 'views_handler_filter_term_node_tid') is true.
You may try to omit the corresponding if(...):

+      // Modify value_options to include title for term node reference fields.
+      foreach ($this->value_options as $tid) {
+        $result = db_query('SELECT name FROM {taxonomy_term_data} WHERE tid = :tid', array(':tid' => $tid));
+        $title = $result->fetchField();
+        if (!empty($title)) {
+          $this->value_options[$tid] = $title;
+        }
+      }
+      // resort results based on title
+      asort($this->value_options);
+      // Remove empty values
+      $this->value_options = array_diff_key($this->value_options , array("" => NULL));

But you may have problems with selective filters based on numeric fields.
Note that my selective filters are represented in a block by Better Exposed Filters module.

The code in #5 fixes this issue for me.

The code in #5 also worked for me.
Thank you for it.

Can we get this into dev branch?

#5 worked for me. Thanks!

Seconding the request to get this fix committed to dev. It works perfect for me on multiple sites.

Committed to latest dev, although I'm not crazy about the patch, because it hard-codes a special case in an otherwise generic code block. But as long as it helps the folks here...

Guys, I have got this problem in drupal 8.3.5, is there any solution for it!?

Regards