Symfony2 Setting a default choice field selection

Question

I am creating a form in the following manner    form    this- gt createFormBuilder  breed               - gt add  species    entity   array                     class    gt   BFPEduBundle Item                      property    gt   name                      query builder    gt  function ItemRepository  er                         return  er- gt createQueryBuilder  i                                   - gt where  i type    species                                    - gt orderBy  i name    ASC                                       - gt add  breed    text   array  required   gt true                - gt add  size    textarea   array  required    gt  false                - gt getForm     How can I set a default value for the species listbox     Thank you for your response  I apologise  I think I should rephrase my question  Once I have a value that I retrieve from the model  how do I set that value as SELECTED  yes  for the corresponding value in the species choice list   So  that select option output from the TWIG view would appear like so    lt option value  174  selected  yes  gt Dog lt  option gt

User · Answer

I think you should simply use  breed- gt setSpecies  species   for instance in my form I have    m   new Member     m- gt setBirthDate new  DateTime    form    this- gt createForm new MemberType   m     and that sets my default selection to the current date  Should work the same way for external entities

User · Answer

the solution  for type entity use option  data  but value is a object  ie    em    this- gt getDoctrine  - gt getEntityManager     - gt add  sucursal    entity   array         class    gt   TestGeneralBundle Sucursal        property   gt  descripcion        label    gt   Sucursal        required    gt  false       data   gt  em- gt getReference  TestGeneralBundle Sucursal  3

User · Answer

I don t think you should use the data option  because this does more than just setting a default value  You re also overriding any data that s being passed to the form during creation  So basically  you re breaking support for that feature  - Which might not matter when you re letting the user create data  but does matter when you  want to  someday  use the form for updating data   See http   symfony com doc current reference forms types choice html data  I believe it would be better to pass any default data during form creation  In the controller   For example  you can pass in a class and define the default value in your class itself   when using the default Symfony Bundle FrameworkBundle Controller Controller    form    this- gt createForm AnimalType  class         species    gt  174    this id might be substituted by an entity       Or when using objects    dog   new Dog     dog- gt setSpecies 174      this id might be substituted by an entity   form    this- gt createForm AnimalType  class   dog     Even better when using a factory   where dog probably extends from animal    form    this- gt createForm AnimalType  class  DogFactory  create       This will enable you to separate form structure and content from each other and make  your form reusable in more situations     Or  use the preferred choices option  but this has the side effect of moving the default option to the top of your form   See  http   symfony com doc current reference forms types choice html preferred-choices   builder- gt add       species         entity                   class    gt   BFPEduBundle Item            property    gt   name            query builder    gt                preferred choices    gt   174     this id might be substituted by an entity

User · Answer

You can define the default value from the  data  attribute  This is part of the Abstract  field  type  http   symfony com doc 2 0 reference forms types field html    form    this- gt createFormBuilder               - gt add  status    choice   array                   choices    gt  array                      0   gt   Published                       1   gt   Draft                                      data    gt  1                            - gt getForm      In this example   Draft  would be set as the default selected value

User · Answer

You can use  preferred choices  and  push  the name you want to select to the top of the list  Then it will be selected by default    preferred choices    gt  array 1     1 is item number   entity Field Type

User · Answer

If you want to pass in an array of Doctrine entities  try something like this  Symfony 3 0     protected  entities  protected  selectedEntities   public function   construct  entities   null   selectedEntities   null         this- gt entities    entities       this- gt selectedEntities    selectedEntities     public function buildForm FormBuilderInterface  builder  array  options         builder- gt add  entities    entity              class    gt   MyBundle MyEntity            choices    gt   this- gt entities           property    gt   id            multiple    gt  true           expanded    gt  true           data    gt   this- gt selectedEntities

User · Answer

The form should map the species- id value automatically to the selected entity select field  For example if your have a Breed entity that has a OnetoOne relationship with a Species entity in a join table called  breed species    class Breed       private  species                  ORM OneToOne targetEntity  BreedSpecies   mappedBy  breed              private  breedSpecies       public function getSpecies           return  breedSpecies- gt getSpecies               private function getBreedSpecies           return  this- gt  breedSpecies            The field  species  in the form class should pick up the species- id value from the  species  attribute object in the Breed class passed to the form   Alternatively  you can explicitly set the value by explicitly passing the species entity into the form using SetData          breedForm    this- gt createForm  new BreedForm     breed         species      breed- gt getBreedSpecies  - gt getSpecies          breedForm- gt get  species  - gt setData   species         return  this- gt render   AcmeBundle Computer edit html twig                            array   breed        gt   breed                                   breedForm    gt   breedForm- gt createView

User · Answer

I m not sure what you are doing wrong here  when I build a form using form classes Symfony takes care of selecting the correct option in the list   Here s an example of one of my forms that works   In the controller for the edit action    entity    em- gt getRepository  FooBarBundle CampaignEntity  - gt find  id    if    entity    throw  this- gt createNotFoundException  Unable to find CampaignEntity entity          editForm    this- gt createForm new CampaignEntityType     entity    deleteForm    this- gt createDeleteForm  id    return  this- gt render  FooBarBundle CampaignEntity edit html twig   array           entity         gt   entity           edit form      gt   editForm- gt createView             delete form    gt   deleteForm- gt createView              The campaign entity type class  src  Foo BarBundle Form CampaignEntityType php    namespace Foo BarBundle Form   use Symfony Component Form AbstractType  use Symfony Component Form FormBuilder  use Doctrine ORM EntityRepository   class CampaignEntityType extends AbstractType       public function buildForm FormBuilder  builder  array  options                 builder         - gt add  store    entity   array  class   gt  FooBarBundle Store    property   gt  name    em   gt  my non default em   required     gt  true   query builder    gt  function EntityRepository  er   return  er- gt createQueryBuilder  s  - gt orderBy  s name    ASC               - gt add  reward              public function getName                 return  foo barbundle campaignentitytype

User · Answer

You can either define the right default value into the model you want to edit with this form or you can specify an empty data option so your code become    form    this     - gt createFormBuilder  breed      - gt add           species            entity           array               class            gt   BFPEduBundle Item                property         gt   name                empty data       gt  123               query builder    gt  function ItemRepository  er                    return  er                     - gt createQueryBuilder  i                       - gt where  i type    species                        - gt orderBy  i name    ASC                                                       - gt add  breed    text   array  required   gt true       - gt add  size    textarea   array  required    gt  false       - gt getForm

User · Answer

If you use Cristian s solution  you ll need to inject the EntityManager into your FormType class  Here is a simplified example   class EntityType extends AbstractType      public function   construct  em             this- gt em    em             public function buildForm FormBuilderInterface  builder  array  options             builder              - gt add  MyEntity    entity   array                        class    gt   AcmeDemoBundle Entity                         property    gt   name                         query builder    gt  function EntityRepository  er                             return  er- gt createQueryBuilder  e                                - gt orderBy  e name    ASC                                                  data    gt   this- gt em- gt getReference  AcmeDemoBundle Entity   3                        And your controller                  form    this- gt createForm new EntityType  this- gt getDoctrine  - gt getManager      entity             From Doctrine Docs      The method EntityManager getReference  entityName   identifier  lets you obtain a reference to an entity for which the identifier is known  without loading that entity from the database  This is useful  for example  as a performance enhancement  when you want to establish an association to an entity for which you have the identifier

User · Answer

From the docs   public Form createNamed string FormTypeInterface  type  string  name  mixed  data   null  array  options   array      mixed  data   null is the default options  So for example I have a field called status and I implemented it as so    default   array  Status    gt   pending      filter form    this- gt get  form factory  - gt createNamedBuilder  filter    form    default          - gt add  Status    choice   array               choices    gt  array                       gt   Please Select                       rejected    gt   Rejected                    incomplete    gt   Incomplete                    pending    gt   Pending                    approved    gt   Approved                    validated    gt   Validated                    processed    gt   Processed                          - gt getForm

User · Answer

Setting default choice for symfony2 radio button                builder- gt add  range options    choice   array                   choices    gt  array  day   gt  Day    week   gt  Week    month   gt  Month                     data   gt  day     set default value                   required   gt true                   empty data   gt null                   multiple   gt false                   expanded   gt  true

[forms] Symfony2 Setting a default choice field selection

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