I have a request to create a form filter that has two fields, one a freeform text
and the other a select. The value in the select will determine how to handle the value of the text is turned into a criteria.
I can create a custom addXXXColumnCriteria for either field, but how can I access the other field from within this function?
I suggest you not to use de addXXXColumnCriteria, but overwrite the FormFilter doBuildCriteria (Propel) or doBuildQuery(Doctrine) methods.
I have never used Propel, but I guess that works as good as for Doctrine.
For example:
class yourPropelFormFilter extends anyKindOfSfFormFilterPropel {
public function doBuildCriteria(array $values) {
$criteria = parent::doBuildCriteria($values);
// ... change the criteria behaviour with the $values array (do some print_r to $values to see how the data array is formatted)
return $criteria;
}
}
For Doctrine (remember to use the getRootAlias query method):
class yourDoctrineFormFilter extends anyKindOfSfFormFilterDoctrine {
public function doBuildQuery(array $values) {
$q = parent::doBuildQuery($values);
$rootAlias = $q->getRootAlias();
if(...) {
$q->innerJoin($rootAlias.'.RelationX rx')
->addWhere('rx.value = ?',$values['...']);
}
return $q;
}
}
Please, remember to return the criteria/query modified object!
Related
In a SYMFONY FORM (ORM is not use (PDO is used for DB query instead)).
I have a class MyEntityType in which the buildForm function has:
$builder->add('my_attribute',ChoiceType::class,array(
'choices'=>$listForMyAttribute,
'multiple'=>'true',
'attr'=>array('data-native-menu'=>'false'),
'label'=>'Multiple Select on my attribute'
));
My attribute is an array of an entity named MyEntity which has:
/**
* #Assert\NotBlank()
*/
private $myAttribute;
With a getter and a setter for that variable $myAttribute.
When I submit the form in the Controller, it doesn't pass the validation check and logs this error:
Unable to reverse value for property path "myAttribute" : Could not find all matching choices for the given values.
When I start to look for solution around this error message, it leads to something named "How to Use Data Transformers" in SYMFONY Cookbook; And it seems a solution would involve to create new Class and write a lot of code for something that one should be able to by-pass in a much straight forward way.
Does anyone have an idea?
My problem was that my array $listForMyAttribute was defined in the buildForm() function and its definition was relying on some conditional.
The conditional to make the array were met when this one was displayed for the first time.
After pushing the submit button, the buildForm was regenerated in the Controller, this second time, the condition were not met to make the array $listForMyAttribute as it was on the first display. Hence the program was throwing a "contraint not met error" because the value submited for that field could not be find.
Today I face exactly the same problem. Solution is simple as 1-2-3.
1) Create utility dummy class DoNotTransformChoices
<?php
namespace AppBundle\DataTransformer;
use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface;
class DoNotTransformChoices implements ChoiceListInterface
{
public function getChoices() { return []; }
public function getValues() { return []; }
public function getPreferredViews() { return []; }
public function getRemainingViews() { return []; }
public function getChoicesForValues(array $values) { return $values; }
public function getValuesForChoices(array $choices) { return $choices; }
public function getIndicesForChoices(array $choices) { return $choices; }
public function getIndicesForValues(array $values) { return $values; }
}
2) Add to your field the following additional option:
...
'choice_list' => new DoNotTransformChoices,
...
3) Congratulations!
Is there a built-in / easy way to set mappings between domain class properties and JSON strings that don't have exact matches for the property names?
For example, when I have a domain class:
class Person {
String jobTitle
String favoriteColor
static constraints = {
jobTitle(blank: false)
favoriteColor(blank: false)
}
}
And someone's giving me the following JSON:
{ "currentJob" : "secret agent", "the-color" : "red" }
I'd like to be able to still do this:
new Person(request.JSON).save()
Is there a way in groovy/grails for me to map currentJob -> jobTitle and the-color -> favorite color?
EDIT:
I've done a little experimenting, but I still haven't gotten it working. But I have found out a couple interesting things...
At first I tried overwriting the setProperty method:
#Override
setProperty(String name, Object value) {
if(this.hasProperty(name)) this[name] = value
else {
switch(name) {
'currentJob': this.jobTitle = value; break;
'the-color': this.favoriteColor = value; break;
}
}
}
But this doesn't work for two reasons: 1) setProperty is only called if there is a property that matches name and 2) "this[name] = value" calls setProperty, leading to an infinite recursive loop.
So then I thought, well screw it, I know what the incoming json string looks like (If only I could control it), I'll just get rid of the line that handles the scenario where the names match and I'll override hasProperty, maybe that will work:
#Override
void setProperty(String name, Object value) {
switch(name) {
'currentJob': this.jobTitle = value; break;
'the-color': this.favoriteColor = value; break;
}
}
#Override
boolean hasProperty(String name) {
if(name == "currentJob" || name == "the-color") return true
return false
}
But no, that didn't work either. By a random stroke of luck I discovered, that not only did I have to overwrite hasProperty(), but I also had to have an empty setter for the property.
void setCurrentJob(){ }
That hack worked for currentJob - I guess setProperty only gets called if hasProperty returns true and there is a setter for the property (Even if that setter is auto generated under the covers in grails). Unfortunately I can't make a function "setThe-Color" because of the dash, so this solution doesn't work for me.
Still stuck on this, any help would definitely be appreciated.
EDIT:
Overriding the void propertyMissing(String name, Object value){} method is called by this:
Person person = new Person()
person["currentJob"] = "programmer"
person["the-color"] = "red"
But not by this:
Person person = new Person(["currentJob":"programmer", "the-color":"red"])
I found grails criteria and want to customize sorting options.
E.g. I have domain Book and I want to make some criteria:
Book.createCriteria().list {
//some code like ilike('name', 'book')
...
order(params.sort, params.order)
}
I want to make specific sorting rule, e.g. by name.trim().
How can I do this?
Based on a solution provided here, by extending the hirbernate Order class, you can customize it to accept functions and use it with createCriteria.
I wont be surprised, if there is a nicer and easier approach since this source is pretty old and also Grails is cooler than this :D
First you need a class extending Hibernate Order:
Originally by:spostelnicu
public class OrderBySqlFormula extends Order {
private String sqlFormula;
protected OrderBySqlFormula(String sqlFormula) {
super(sqlFormula, true);
this.sqlFormula = sqlFormula;
}
public String toString() {
return sqlFormula;
}
public String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery) throws HibernateException {
return sqlFormula;
}
public static Order sqlFormula(String sqlFormula) {
return new OrderBySqlFormula(sqlFormula);
}
}
Then you can pass instance of this class to your createCriteria:
def ls = Domain.createCriteria().list {
order OrderBySqlFormula.sqlFormula("TRIM(name)")
}
Note1: You can pass any formula to sqlFormula as long as the underlying database accepts it.
Note2: Using such approach might cause migration challenges.
Hope it helps
Working in Grails 2.2
I have a situation where I need to be able to handle an unknown number of CommitteeMembers in the view. These need to be both created and displayed.
Each one has the usual attributes - name, address, contact information, userid.
I understand that if I name form fields the same name, Grails will return a collection for me to iterate over. In this case, however, I am faced with this situation:
cm_firstname
cm_lastname
cm_address
cm_email
cm_userid
So does this mean I will be given collections of each of these fields? That is not as useful as there is no way to corelate the various firstnames with the correct lastnames, etc.
I am enjoying Grails and am looking forward to your feedback.
You can use Grails Command objects to do this work for you. Here's an example in a SO question. Basically you will have a single collection of CommitteeMembers that will be populated in your controller thorugh data binding.
As #Gregg says, in the view you need the fields to have an index.
class MyDomain {
String name
}
class MyDomainCommand {
List<MyDomain> instances = ListUtils.lazyList([], FactoryUtils.instantiateFactory(MyDomain))
}
class MyController {
def save() {
MyDomainCommand command = new MyDomainCommand()
bindData(command, params, [include: 'instances'])
}
}
I'll tell you what I do, which may or may not be the best option. I do this mainly because I don't like data binding.
For your case as an example, I would name my fields: "cm.firstName, cm.lastName, cm.address, cm.email, cm.userId".
If you are in a service:
GrailsWebRequest webUtils = WebUtils.retrieveGrailsWebRequest()
List committeeMembers = [].withDefault {new GrailsParameterMap([:], webUtils.getCurrentRequest())}
In a controller:
List committeeMembers = [].withDefault {new GrailsParameterMap([:], request)}
Then
params.cm.each { k, v ->
if (v instanceof String[]) {
v.eachWithIndex { val, idx ->
committeeMembers[idx]."$k" = val
}
}
else {
committeeMembers[0]."$k" = v
}
}
Then you can do:
committeeMembers.each {
<Create from it.firstName, it.lastName, etc>
}
I am using jena framework to process my owl ontology.
I want to write a method which can find the super class it belongs which is just under the Thing class.
Four example, if there are 5 level hierarchy, lets say first level is Thing, second level is secondAncestor, third level is ThirdAncestor and so on. If I pass a class FifthAncestor, I want to return SecondAncestor because Thing does not make any sense. If I pass ThirdAncestor, I want to return SecondAncestor. In other words, most general class it belongs to but not the top one (Thing).
Method one
This will depend on your model having a reasoner, because owl:Thing isn't normally asserted into a model, and so won't be present in a model with no reasoner. Given that, then:
OntModel m = ... your OntModel ...;
OntClass thing = m.getOntClass( OWL.Thing.getURI() );
for (Iterator<OntClass> i = thing.listSubClasses(true); i.hasNext(); ) {
OntClass hierarchyRoot = i.next();
....
}
Note the use of the flag direct = true in the listSubClasses() call.
Method two
Does not require a reasoner.
for (Iterator<OntClass> i = m.listHierarchyRootClasses(); i.hasNext(); ) {
OntClass hierarchyRoot = i.next();
....
}
Note that this method will return the root classes, even if they are anonymous resources representing a class expression. For UI purposes, this often isn't what you want (it's hard to display a bNode in a meaningful way to a user). In this case, use OntTools.namedHierarchyRoots instead.
Update
I now understand that Alan wants the root classes that are parents of a particular class, whereas namedHierarchyRoots will list all of the root classes of the class hierarchy. Note that, in general, a class may have zero, one or many named-superclasses between it and Thing.
Anyway, here's how I would solve this. Again, this solution assumes the model is not using a reasoner. With a reasoner, it would be much easier:
private boolean hasSubClassTransitive( OntClass parent, OntClass child ) {
return OntTools.findShortestPath( child.getOntModel(), child, parent,
new OntTools.PredicateFilter( RDFS.subClassOf ) ) != null;
}
public List<OntClass> namedRootsOf( OntClass c ) {
List<OntClass> cRoots = new ArrayList<OntClass>();
for (OntClass root: OntTools.namedHierarchyRoots( c.getOntModel() )) {
if (hasSubClassTransitive( root, c )) {
cRoots.add( root );
}
}
return cRoots;
}
I find solution in following way without using reasoner. It is not perfect solution but it works. This solution also solves problem, if you get unnamed (anonymous) class as super class.
First I created an array which stores top level class names.
A simple method which searches in my created array, if the passed parameter is a top class.
public Boolean IsTopClass(String ontologyClass)
{
//NS is URI of ontology
String onClass=ontologyClass.replace(NS, "");
for(String oClass: topLevelClassList)
{
if(oClass.equalsIgnoreCase(onClass))
return true;
}
return false;
}
Then the main method which finds most general class under thing:
public String FindSuperClassUnderThing(OntClass subClass)
{
OntClass prevSubClass=subClass;
OntClass prevprevSubClass=null;
String topClass="";
String supClass=subClass.toString();
ExtendedIterator<OntClass> superClassList=null;
while(!this.IsTopClass(topClass))
{
prevprevSubClass=prevSubClass;
prevSubClass=prevSubClass.getSuperClass();
//if returned class is a anonymous class (not a named one)
//get list of superclasses and check if there is a topclass
//inside the super class list
if(!prevSubClass.toString().startsWith(NS))
{
prevSubClass=prevprevSubClass;
superClassList= prevSubClass.listSuperClasses();
while(superClassList.hasNext())
{
OntClass OntClassFromList= superClassList.next();
if(this.IsTopClass(OntClassFromList.toString()))
{
topClass= OntClassFromList.toString();
}
}
}
else
{
if (this.IsTopClass(prevSubClass.toString()))
{
topClass= prevSubClass.toString();
}
}
}
return topClass;
}