Save and retrieve instance properties.

tripal_jbrowse_mgmt/includes/tripal_jbrowse_mgmt.api.inc

@@ -529,3 +529,79 @@ function tripal_jbrowse_mgmt_get_track_types() {
     'XYPlot',
   ];
 }
+
+/**
+ * Save properties for a given instance.
+ *
+ * @param $id
+ *   The instance ID that properties should be associated with.
+ * @param $data
+ *   An array of properties where each is
+ *   key: property_type, value: property value.
+ */
+function tripal_jbrowse_mgmt_save_instance_properties($id, $data) {
+
+  // For each property...
+  foreach ($data as $type => $value) {
+    tripal_jbrowse_mgmt_save_instance_property($id, $type, $value);
+  }
+
+}
+
+/**
+ * Save the details for a specific property of a given instance.
+ *
+ * @param $id
+ *   The instance ID that properties should be associated with.
+ * @param $type
+ *   The name of the property type to be saved.
+ * @param $value
+ *   The value of the property to be saved.
+ */
+function tripal_jbrowse_mgmt_save_instance_property($id, $type, $value) {
+
+  // Check to see if the property already exists.
+  $result = db_select('tripal_jbrowse_mgmt_instanceprop', 'p')
+    ->fields('p', ['value'])
+    ->condition('instance_id', $id)
+    ->condition('property_type', $type)
+    ->execute()->fetchObject();
+
+  // If the property doesn't already exist then insert it.
+  if (empty($result)) {
+    return db_insert('tripal_jbrowse_mgmt_instanceprop')
+      ->fields([
+        'instance_id' => $id,
+        'property_type' => $type,
+        'value' => $value,
+      ])->execute();
+  }
+  // Otherwise, we need to update it.
+  else {
+    return db_update('tripal_jbrowse_mgmt_instanceprop')
+      ->fields([
+        'value' => $value,
+      ])
+      ->condition('instance_id', $id)
+      ->condition('property_type', $type)
+      ->execute();
+  }
+}
+
+/**
+ * Retrieves the value for a given instance property.
+ *
+ * @param $id
+ *   The instance ID.
+ * @param $type
+ *   The name of the property type.
+ * @return
+ *   The value of the property for a given instance.
+ */
+function tripal_jbrowse_mgmt_get_instance_property($id, $type) {
+  return db_select('tripal_jbrowse_mgmt_instanceprop', 'p')
+    ->fields('p', ['value'])
+    ->condition('instance_id', $id)
+    ->condition('property_type', $type)
+    ->execute()->fetchField();
+}

tripal_jbrowse_mgmt/includes/tripal_jbrowse_mgmt_add.form.inc

@@ -104,7 +104,7 @@ function tripal_jbrowse_mgmt_add_form($form, &$form_state) {
     '#description' => 'The following settings pertain to link directing users to this instance (either embedded or the original).',
   ];
 
-  $form['page']['start_loc'] = [
+  $form['page']['start-loc'] = [
     '#type' => 'textfield',
     '#title' => 'Start Location',
     '#description' => "<p>The initial genomic position which will be visible in
@@ -137,9 +137,10 @@ function tripal_jbrowse_mgmt_add_form($form, &$form_state) {
       position 0, starting position of the gene, to a certain end point.</p>\r\n
       <pre>     ctgA</pre>\r\n<p>Displays an arbitrary region from the ctgA
       reference.</p>",
+    '#default_value' => ($edit_form) ? tripal_jbrowse_mgmt_get_instance_property($instance_id, 'start-loc') : NULL,
   ];
 
-  $form['page']['start_tracks'] = [
+  $form['page']['start-tracks'] = [
     '#type' => 'textarea',
     '#rows' => 2,
     '#title' => 'Tracks to Display',
@@ -147,6 +148,7 @@ function tripal_jbrowse_mgmt_add_form($form, &$form_state) {
       each of which should correspond to the \"label\" element of the track
       information dictionaries that are currently viewed in the viewing field.</p>\r\n
       <pre>     DNA,knownGene,ccdsGene,snp131,pgWatson,simpleRepeat</pre>",
+    '#default_value' => ($edit_form) ? tripal_jbrowse_mgmt_get_instance_property($instance_id, 'start-tracks') : NULL,
   ];
 
   $button = 'Create New Instance';
@@ -308,8 +310,13 @@ function tripal_jbrowse_mgmt_add_form_submit($form, &$form_state) {
         $user->uid
       );
       $form_state['redirect'] = "admin/tripal/extension/tripal_jbrowse/management/instances/$instance_id";
-      return $form;
     }
     drupal_set_message('Failed to create instance!', 'error');
   }
+
+  // Now save the instance properties.
+  tripal_jbrowse_mgmt_save_instance_properties(
+    $instance_id,
+    $form_state['values']['page']
+  );
 }