Bug 10543: fix false warnings from checks of mandatory item fields

Under certain circumstances, when editing an item, you get a popup
warning
  "1 mandatory fields empty (highlighted)".

Even though all mandatory fields are filled in.

This occurs when there is a field with a huge content (more than 100
characters) that gets displayed in a textarea instead of input.

This patch corrects the Javascript form check by using siblings().

Also adds a more precise filter to find mandatory inputs because
looking in full page may bring unwanted results.

Test plan :
- In a framework, make sure you have in item field :
  An optional subfield (without authorised value),
  then a mandatory subfield, then an optional subfield
  next to mandatory subfield
  For example : $i (optional), $r (mandatory) and $s (optional)
- Open a biblio record and create a new item
- Enter more than 100 characters in $i, fill $r and $s
- Click "Add item"
- Edit this item
=> You get a textarea for $i
- Empty $s and Save
=> Without patch, you get a warning and form is not saved and you see that $s is yellow while it should be $r
=> With patch, form is saved
- Re-edit this item
- Empty $r and save
=> You get a warning and form is not saved

Signed-off-by: Srdjan <srdjan@catalyst.net.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Notes on last patch.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 651ea298ea)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Couldn't reproduce using $i as in the test plan, but $o triggered the problem, which this patch series fix.
(cherry picked from commit 9f5f05d40d)
Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
(cherry picked from commit 9f5f05d40d)

koha-tmpl/intranet-tmpl/prog/en/js/cataloging.js

@@ -464,3 +464,20 @@ function CloneItemSubfield(original){
     // insert this line on the page
     original.parentNode.insertBefore(clone,original.nextSibling);
 }
+
+/**
+ * Check mandatory subfields of a cataloging form and adds <code>missing</code> class to those who are empty.<br>
+ * @param p the parent object of subfields to check
+ * @return the number of empty mandatory subfields
+ */
+function CheckMandatorySubfields(p){
+    var total = 0;
+    $(p).find(".subfield_line input[name='mandatory'][value='1']").each(function(i){
+        var editor = $(this).siblings("[name='field_value']");
+        if (!editor.val()) {
+            editor.addClass("missing");
+            total++;
+        }
+    });
+    return total;
+}

koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/additem.tt

@@ -40,27 +40,15 @@ function active(numlayer)
     }
 }
 function Check(f) {
-    var total_errors=0;
-    $("input[name='mandatory'],select[name='mandatory']").each(function(i){
-        if($(this).val() == 1){
-            var mandatory_field = $("input[name='field_value'],select[name='field_value']").eq(i);
-            if(mandatory_field.val() == ''){
-                mandatory_field.addClass("missing");
-                total_errors++;
-            }
-        }
-    });
-
-    var alertString2;
-    if (total_errors==0) {
-        return true;
-    } else {
-        alertString2  = _("Form not submitted because of the following problem(s)");
+    var total_errors = CheckMandatorySubfields(f);
+    if (total_errors > 0) {
+        var alertString2 = _("Form not submitted because of the following problem(s)");
         alertString2 += "\n------------------------------------------------------------------------------------\n";
-        alertString2 += "\n- "+ total_errors+_(" mandatory fields empty (highlighted)");
+        alertString2 += "\n- "+ total_errors + _(" mandatory fields empty (highlighted)");
         alert(alertString2);
         return false;
     }
+    return true;
 }
 function CheckMultipleAdd(f) {