Services Views not exposing thumbnail image url I am trying to create a view which will be exposed as a service via Services Views module. I have only defined Default display for this view and added the following field to the list of Fields - 


Node: Nid Nid
Node: Type Type
Node: Title Title
Profile: Author Info: Full Name Author Name
Node: Post date Post date
Node: Teaser Teaser
Node: Promoted to front page Promoted to front page
Node: Last edited by Last edited by
Node: Updated date Updated date
Content: Thumbnail URL to file


All the fields are appearing nicely when I request it (using this url: http://localhost/app/rest/views/articlelist?args[0]=1), but the last field, which is the url to thumbnail file isn't appearing there.

A sample response from the above url is as follows - 

&lt;item&gt;
&lt;nid&gt;22&lt;/nid&gt;
&lt;type&gt;Article&lt;/type&gt;
&lt;title&gt;UK soldier killed in Afghanistan&lt;/title&gt;
&lt;author_name&gt;Demo Journalist&lt;/author_name&gt;
&lt;post_date&gt;Jul 1 2012 - 4:08pm&lt;/post_date&gt;
&lt;teaser&gt;
&lt;p&gt;&amp;nbsp;ret rre tre tretre trtretre tre t re t&amp;nbsp;ret rre tre tretre trtretre tre t re t&amp;nbsp;ret rre tre tretre trtretre tre t re t&amp;nbsp;ret rre tre tretre trtretre tre t re t&amp;nbsp;ret rre tre tretre trtretre tre t re t&amp;nbsp;ret rre tre tretre trtretre tre t re t&lt;/p&gt;
&lt;/teaser&gt;
&lt;promoted_to_front_page&gt;Yes&lt;/promoted_to_front_page&gt;
&lt;last_edited_by&gt;admin&lt;/last_edited_by&gt;
&lt;updated_date&gt;Jan 2 2013 - 3:56pm&lt;/updated_date&gt;
&lt;/item&gt;


What do I need to do to display the related thumbnail url?

Edit

Here is the query that is being executed (obtained from preview) - 

SELECT node.nid AS nid, node.language AS node_language, node.type AS node_type, 
       node.title AS node_title, 
       profile_values_profile_full_name.value AS profile_values_profile_full_name_value, 
       profile_values_profile_full_name.uid AS profile_values_profile_full_name_uid, 
       node.created AS node_created, node.promote AS node_promote, 
       node.changed AS node_changed, 
       files_node_data_field_thumbnail_image_node_data_field_thumbnail_image.field_thumbnail_image_fid AS files_node_data_field_thumbnail_image_node_data_field_thumbnail_image_field_thumbnail_image_fid, 
       files_node_data_field_thumbnail_image_node_data_field_thumbnail_image.field_thumbnail_image_list AS files_node_data_field_thumbnail_image_node_data_field_thumbnail_image_field_thumbnail_image_list, 
       files_node_data_field_thumbnail_image_node_data_field_thumbnail_image.field_thumbnail_image_data AS files_node_data_field_thumbnail_image_node_data_field_thumbnail_image_field_thumbnail_image_data, 
       node_data_field_analysis_box.field_analysis_box_value AS node_data_field_analysis_box_field_analysis_box_value, 
       node.vid AS node_vid 
FROM node node  LEFT JOIN content_type_article node_data_field_thumbnail_image 
ON node.vid = node_data_field_thumbnail_image.vid 
LEFT JOIN files files_node_data_field_thumbnail_image 
ON node_data_field_thumbnail_image.field_thumbnail_image_fid = files_node_data_field_thumbnail_image.fid 
INNER JOIN term_node term_node 
ON node.vid = term_node.vid 
INNER JOIN users users 
ON node.uid = users.uid 
LEFT JOIN profile_values profile_values_profile_full_name 
ON users.uid = profile_values_profile_full_name.uid AND 
    profile_values_profile_full_name.fid = '1' 
LEFT JOIN content_type_article files_node_data_field_thumbnail_image_node_data_field_thumbnail_image 
ON files_node_data_field_thumbnail_image.fid = files_node_data_field_thumbnail_image_node_data_field_thumbnail_image.field_thumbnail_image_fid 
LEFT JOIN content_type_article node_data_field_analysis_box 
ON node.vid = node_data_field_analysis_box.vid 
WHERE (node.status &lt;&gt; 0) AND (term_node.tid IN (1, 2)) 
ORDER BY node_changed DESC, node_created DESC
It's a bit unclear what you have in your view, but here are some suggestions:


Make sure you have Formatter set to "Image URL", and the "Image Style" set to the specific style (ie thumbnail)
Ensure that you actually have some data for your filter. "No Results Behavior" may have "Hide if empty", which would omit this field in your response if it's not set.
Enable showing the query and results for the view to at least check that the return data contains the value that you expect (admin/structure/views/settings -> [] show performance statistics)
Check that your contextual filter is not obfuscating something - remove the args[0]=1
Ensure that the normal Page response for the view displays a value for the thumbnail field, by going to the "path" that you've defined for the view.