Disabled Form Inputs Do Not Appear in the Request

Disabled form inputs do not appear in the request

Elements with the disabled attribute are not submitted or you can say their values are not posted (see the second bullet point under Step 3 in the HTML 5 spec for building the form data set).

I.e.,

<input type="textbox" name="Percentage" value="100" disabled="disabled" /> 

FYI, per 17.12.1 in the HTML 4 spec:

1. Disabled controls do not receive focus.
2. Disabled controls are skipped in tabbing navigation.
3. Disabled controls cannot be successfully posted.

You can use readonly attribute in your case, by doing this you will be able to post your field's data.

I.e.,

<input type="textbox" name="Percentage" value="100" readonly="readonly" />

FYI, per 17.12.2 in the HTML 4 spec:

1. Read-only elements receive focus but cannot be modified by the user.
2. Read-only elements are included in tabbing navigation.
3. Read-only elements are successfully posted.

Values of disabled inputs will not be submitted

Yes, all browsers should not submit the disabled inputs, as they are read-only.

More information (section 17.12.1)

Attribute definitions

disabled [CI] When set for a form control, this Boolean attribute
disables the control for user input. When set, the disabled attribute
has the following effects on an element:

• Disabled controls do not receive focus.
• Disabled controls are skipped in tabbing navigation.
• Disabled controls cannot be successful.

The following elements support the disabled attribute: BUTTON, INPUT,
OPTGROUP, OPTION, SELECT, and TEXTAREA.

This attribute is inherited but local declarations override the
inherited value.

How disabled elements are rendered depends on the user agent. For
example, some user agents "gray out" disabled menu items, button
labels, etc.

In this example, the INPUT element is disabled. Therefore, it cannot
receive user input nor will its value be submitted with the form.

<INPUT disabled name="fred" value="stone">

Note. The only way to modify dynamically the value of the disabled
attribute is through a script.

How to submit the value of a disabled form field?

That's how HTML works, values of disabled elements are not being sent.

What you can do is using a hidden field, that's what the form helper automatically does when using for example checkboxes, in order to ensure that there's always a value being sent, as unchecked checkboxes do not submit any value, just like disabled inputs.

The hidden field should have the same name as the actual field, and it should be placed before the actual field, that way the hidden value will only be sent in case the following element is disabled.

echo $this->Form->hidden('exchange_type');
echo $this->Form->input('exchange_type', array(
    'disabled' => true,
    // ...
));

That would pick up the previously POSTed value for both the hidden input and the select input, and the hidden input would be submittable.

See also Cookbook > Helpers > FormHelper > FormHelper::hidden()

Submitting the value of a disabled input field

I wanna Disable an Input Field on a
form and when i submit the form the
values from the disabled form is not
submitted.

Use Case: i am trying to get Lat Lng
from Google Map and wanna Display it..
but dont want the user to edit it.

You can use the readonly property in your input field

<input type="text" readonly="readonly" />

Disabled form inputs do not appear in the request

Elements with the disabled attribute are not submitted or you can say their values are not posted (see the second bullet point under Step 3 in the HTML 5 spec for building the form data set).

I.e.,

<input type="textbox" name="Percentage" value="100" disabled="disabled" /> 

FYI, per 17.12.1 in the HTML 4 spec:

1. Disabled controls do not receive focus.
2. Disabled controls are skipped in tabbing navigation.
3. Disabled controls cannot be successfully posted.

You can use readonly attribute in your case, by doing this you will be able to post your field's data.

I.e.,

<input type="textbox" name="Percentage" value="100" readonly="readonly" />

FYI, per 17.12.2 in the HTML 4 spec:

1. Read-only elements receive focus but cannot be modified by the user.
2. Read-only elements are included in tabbing navigation.
3. Read-only elements are successfully posted.

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