Integrating with website permissions¶
The report we’ve been writing has, to this point, one major flaw. There is nothing in the report which respects the permissions given to each client website regarding which records can be viewed. So, the report will allow a client website to view any record in the system, obviously not good. We need to implement a way of letting Indicia control the report to filter the records returned by website ID. Before going any further, it’s a good idea to set up a new Indicia Forms page on your Drupal website which uses this report as its source. Choose the page category Reporting and set the page type to Report Grid, then load the settings form and set the report (in the Report Settings section) to your report, leaving all the other settings to their default values. Give the report page a title and add it to the Drupal primary links menu so you can easily find it again. This gives us a report which we can use to test behaviour from the client website’s perspective.
There are 3 things you need to do to your report in order to get it to respect website permissions:
- Firstly, insert the tag
#agreements_join#into the query in a suitable place for Indicia to insert more SQL join statements. This is because Indicia is going to need to join to the index_websites_website_agreements table to allow the report to include records from any website which has agreed to share records with your client website. So, the tag will need to go on a new line in the query, before the
- We also need to tell Indicia where we would like any SQL inserted that affects the where clause of our query. So, we need to add a tag
#sharing_filter#into the SQL statement’s where clause.
- Finally, we need to tell the reporting system which field in our query can be used to locate the website_id of the record so that it can correctly filter. We do this by adding an attribute called
queryelement and setting it to “o.website_id”.
Indicia has a notion of website agreements, which are in effect like contracts which declare how data are shared between the various client websites. For example, a website can join the iRecord contract and opt to provide records to iRecord for the purposes of verification, but not reporting.
The result is an XML document which looks like the following:
<?xml version="1.0" encoding="UTF-8"?> <report title="Tutorial" description="Display some records for the report writing tutorial"> <query website_filter_field="o.website_id"> select #columns# from cache_occurrences_functional o join cache_samples_nonfunctional snf on snf.id=o.sample_Id join cache_taxa_taxon_lists cttl on cttl.id=o.taxa_taxon_list_id #agreements_join# where #sharing_filter# and o.created_on>now()-'1 month'::interval </query> <columns> <column name="id" sql="o.id" visible="false" datatype="integer"/> <column name="public_entered_sref" sql="snf.public_entered_sref" display="Grid Ref" datatype="text"/> <column name="preferred_taxon" sql="cttl.preferred_taxon" display="Species" datatype="text"/> <column name="default_common_name" sql="cttl.default_common_name" display="Common Name" datatype="text"/> <column name="date_start" sql="o.date_start" visible="false"/> <column name="date_end" sql="o.date_end" visible="false"/> <column name="date_type" sql="o.date_type" visible="false"/> <column name="date" display="Date" datatype="date"/> </columns> </report>
Try running the report again on your Drupal site. You will see only the records that your client website has permission to view for reporting purposes.
It can be difficult to be certain that things like the website permissions are running
correctly; if you are not aware of records that belong to the other websites using the
warehouse then how can you be sure these data are excluded from the report? If the
log_browser module is enabled on the warehouse, then you can go to Admin >
Browse Server Logs on the warehouse menu to view logged messages. The level of detail
available will depend on the
log_threshold setting in the
application/config/config.php file on the warehouse - typically we want this set to 4 for
development purposes to give maximum log detail. If you load the logs for the current day
by clicking the Go button then you should find the query that has just run near the
bottom, if not then check the log_threshold setting on the warehouse and load the report
again, then check the logs again. One thing to note is that in recent versions of the
warehouse the #agreements_join# tag is no longer used to join to tables which define
which websites can see which records, instead the warehouse pre-calculates this and
inserts the list of viewable website IDs into the where clause of the SQL because this