How to make a drop down list in yii2

Question

How to make a dropdown in yii2 using an activeform and a model  Since all the methods has changed in yii2 how it is done in the new one

User · Answer

It seems you ve found your answer already but since you mentioned the active form I ll contribute with one more  even if it differs only ever so slightly     lt  php      form   ActiveForm  begin         echo  form- gt field  model   attribute           - gt dropDownList               items               Flat array   id   gt  label                 prompt   gt           options                 ActiveForm  end      gt

User · Answer

It is like   lt  php use yii helpers ArrayHelper  use backend models Standard    gt    lt    Html  activeDropDownList  model   s id         ArrayHelper  map Standard  find  - gt all     s id    name      gt    ArrayHelper in Yii2 replaces the CHtml list data in Yii 1 1  Please load array data from your controller    EDIT   Load data from your controller   Controller   items   ArrayHelper  map Standard  find  - gt all     s id    name        return  this- gt render  your view    model   gt  model   items   gt  items      In View   lt    Html  activeDropDownList  model   s id   items    gt

User · Answer

Html  activeDropDownList  model   id    ArrayHelper  map AttendanceLabel  find  - gt all     id    label name      prompt   gt  Attendance Status

User · Answer

It Seems there are many good answers for this question  So i will try to give a detailed answer   active form and hardcoded data    lt  php     echo  form- gt field  model   name  - gt dropDownList   1    gt   Yes    0    gt   No     prompt   gt  Select Option       gt    or    lt  php      a    1    gt   Yes    0    gt   No        echo  form- gt field  model   name  - gt dropDownList  a   prompt   gt  Select Option       gt    active form and data from a db table   we are going to use ArrayHelper so first add it to the name space by    lt  php     use yii helpers ArrayHelper    gt    ArrayHelper has many use full functions which could be used to process arrays  map    is the one we are going to use here  this function help to make a map   of key-value pairs  from a multidimensional array or an array of objects    lt  php     echo  form- gt field  model   name  - gt dropDownList ArrayHelper  map User  find  - gt all    id   username     prompt   gt  Select User       gt    not part of a active form   lt  php     echo Html  activeDropDownList  model   filed name    1    gt   Yes    0    gt   No        gt    or   lt  php      a    1    gt   Yes    0    gt   No        echo Html  activeDropDownList  model   filed name   a      gt    not an active form but data from a db table    lt  php     echo Html  activeDropDownList  model   filed name  ArrayHelper  map User  find  - gt all    id   username     prompt   gt  Select User       gt

User · Answer

If you made it to the bottom of the list  Save some php code and just bring everything back from the DB as you need like this     items   Standard  find  - gt select   name   - gt indexBy  s id  - gt column

User · Answer

Following can also be done  If you want to append prepend icon  This will be helpful             lt  php  form   ActiveForm  begin           echo  form- gt field  model   field  - gt begin         echo Html  activeLabel  model   field     class   gt  control-label col-md-4       gt          lt div class  col-md-5  gt             lt  php echo Html  activeDropDownList  model   field    array list    class   gt  form-control       gt             lt p gt  lt i gt  lt small gt Please select field lt  small gt  lt  i gt   lt  p gt             lt  php echo Html  error  model   field     class   gt  help-block       gt          lt  div gt      lt  php echo  form- gt field  model   field  - gt end     ActiveForm  end     gt

User · Answer

There are some good solutions above  and mine is just a combination of two  I came here looking for a solution     Sarvar Nishonboyev s solution is good because it maintains the creation of the form input label and help-block for error messages   I went with    lt  php use yii helpers ArrayHelper  use app models Product    gt   lt     form- gt field  model   parent id        - gt dropDownList              ArrayHelper  map Product  find  - gt asArray  - gt all     parent id    name                   gt    Again  full credit to   Sarvar Nishonboyev s and  ippi

User · Answer

lt     form- gt field  model   attribute name  - gt dropDownList           ArrayHelper  map Table name  find  - gt all    id   field name              prompt    gt   Select       gt    This will help you   Don t forget to use the class file in header

User · Answer

Have a look this   use yii helpers ArrayHelper     load classes use app models Course             dataList ArrayHelper  map Course  find  - gt asArray  - gt all     id    name     lt    form- gt field  model   center id  - gt dropDownList  dataList              prompt   gt  -Choose a Course-      gt

User · Answer

In ActiveForm just use    lt         form- gt field  model   state id            - gt dropDownList   prompt    gt   ---- Select State ----             - gt label  State     gt

User · Answer

Maybe I m wrong but I think that SQL query from view is a bad idea  This is my way  In controller    model   new SomeModel     items ArrayHelper  map TableName  find  - gt all    id   name      return  this- gt render  view    model   gt  model   items   gt  items     And in View    lt    Html  activeDropDownList  model   item id   items    gt    Or using ActiveForm    lt  php  form   ActiveForm  begin      gt    lt     form- gt field  model   item id  - gt dropDownList  items    gt   lt  php ActiveForm  end      gt

User · Answer

This is about generating data  and so is more properly done from the model  Imagine if you ever wanted to change the way data is displayed in the drop-down box  say add a surname or something  You d have to find every drop-down box and change the arrayHelper  I use a function in my models to return the data for a dropdown  so I don t have to repeat code in views  It also has the advantage that I can specify filter here and have them apply to every dropdown created from this model      Model Standard php     public function getDropdown          return ArrayHelper  map self  find  - gt all     s id    name         You can use this in your view file like this   echo  form- gt field  model   attribute           - gt dropDownList               model- gt dropDown

[php] How to make a drop down list in yii2?

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