Using CakePHP:
I have a many-to-one relationship, let's pretend it's many Leafs to Trees. Of course, I baked a form to add a Leaf to a Tree, and you can specify which Tree it is with a drop-down box ( tag) created by the form helper.
The only thing is, the SELECT box always defaults to Tree #1, but I would like it to default to the Tree it's being added to:
For example, calling example.com/leaf/add/5 would bring up the interface to add a new Leaf to Tree #5. The dropdown box for Leaf.tree_id would default to "Tree 5", instead of "Tree 1" that it currently defaults to.
What do I need to put in my Leaf controller and Leaf view/add.ctp to do this?
This question is related to
php
cakephp
relationships
helpers
cakephp-2.x
You should never use select(), or text(), or radio() etc.; it's terrible practice. You should use input():
$form->input('tree_id', array('options' => $trees));
Then in the controller:
$this->data['Leaf']['tree_id'] = $id;
FormHelper::select(string $fieldName, array $options,
array $attributes)
$attributes['value'] to set which value should be selected default
<?php echo $this->Form->select('status', $list, array(
'empty' => false,
'value' => 1)
); ?>
If you are using cakephp version 3.0 and above, then you can add default value in select input using empty attribute as given in below example.
echo $this->Form->input('category_id', ['options'=>$categories,'empty'=>'Choose']);
The best answer to this could be
Don't use selct for this job use input instead
like this
echo $this->Form->input('field_name', array(
'type' => 'select',
'options' => $options_arr,
'label' => 'label here',
'value' => $id, // default value
'escape' => false, // prevent HTML being automatically escaped
'error' => false,
'class' => 'form-control' // custom class you want to enter
));
Hope it helps.
In CakePHP 1.3, use 'default'=>value to select the default value in a select input:
$this->Form->input('Leaf.id', array('type'=>'select', 'label'=>'Leaf', 'options'=>$leafs, 'default'=>'3'));
the third parameter should be like array('selected' =>value)
$this->Form->input('Leaf.id', array(
'type'=>'select',
'label'=>'Leaf',
'options'=>$leafs,
'value'=>2
));
This will select default second index position value from list of option in $leafs.
Assuming you are using form helper to generate the form:
select(string $fieldName, array $options, mixed $selected, array $attributes, boolean $showEmpty)
Set the third parameter to set the selected option.
cakephp version >= 3.6
echo $this->Form->control('field_name', ['type' => 'select', 'options' => $departments, 'default' => 'your value']);
To make a text default in a select box use the $form->select() method. Here is how you do it.
$options = array('m'=>'Male','f'=>'Female','n'=>'neutral');
$form->select('Model.name',$options,'f');
The above code will select Female in the list box by default.
Keep baking...
Source: Stackoverflow.com