plugin install
This commit is contained in:
Tony Volpe
@@ -0,0 +1,256 @@
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<?php
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namespace ACFGravityformsField;
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use acf_field;
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use GFAPI;
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class Field extends acf_field
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{
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/**
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* Make sure we can easily access our notices
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*
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* @var Notices
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*/
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public $notices;
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/**
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* Get our forms
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*
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* @var array
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*/
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public $forms;
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public function __construct()
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{
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$this->name = 'forms';
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$this->label = __('Gravity Form', 'gravityforms');
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$this->category = __('Relational', 'acf');
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$this->defaults = [
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'return_format' => 'form_object',
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'multiple' => 0,
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'allow_null' => 0
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];
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// Get our notices up and running
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$this->notices = new Notices();
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// Execute the parent constructor as well
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parent::__construct();
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}
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/**
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* Create extra settings for our gravityforms field. These are visible when editing a field.
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*
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* @param $field
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*/
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public function render_field_settings($field)
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{
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// Render a field settings that will tell us if an empty field is allowed or not
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acf_render_field_setting($field, [
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'label' => __('Return Value', 'acf'),
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'instructions' => __('Specify the returned value on front end', 'acf'),
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'type' => 'radio',
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'name' => 'return_format',
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'layout' => 'horizontal',
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'choices' => [
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'post_object' => __('Form Object', 'acf-gravityforms-add-on'),
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'id' => __('Form ID', 'acf-gravityforms-add-on')
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],
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]);
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// Render a field setting that will tell us if an empty field is allowed or not.
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acf_render_field_setting($field, [
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'label' => __('Allow Null?', 'acf'),
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'type' => 'radio',
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'name' => 'allow_null',
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'choices' => [
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1 => __('Yes', 'acf'),
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0 => __('No', 'acf'),
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],
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'layout' => 'horizontal'
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]);
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// Render a field setting that will tell us if multiple forms are allowed.
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acf_render_field_setting($field, [
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'label' => __('Select multiple values?', 'acf'),
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'type' => 'radio',
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'name' => 'multiple',
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'choices' => [
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1 => __('Yes', 'acf'),
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0 => __('No', 'acf'),
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],
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'layout' => 'horizontal'
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]);
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}
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/**
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* Render our Gravity Form field with all the forms as options
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*
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* @param $field
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* @return bool
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*/
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public function render_field($field)
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{
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if (class_exists('GFAPI')) {
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$this->forms = GFAPI::get_forms(true, false, 'title');
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}
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// Set our defaults
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$field = array_merge($this->defaults, $field);
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$choices = [];
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// Check if we have some valid forms
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if (!$this->hasValidForms()) {
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return false;
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}
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foreach ($this->forms as $form) {
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$choices[$form['id']] = $form['title'];
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}
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// Override field settings and start rendering
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$field['choices'] = $choices;
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$field['type'] = 'select';
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// Create a css id for our field
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$fieldId = str_replace(['[', ']'], ['-', ''], $field['name']);
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// Check if we're allowing multiple selections.
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$hiddenField = '';
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$multiple = '';
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$field_options = '';
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if ($field['multiple']) {
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$hiddenField = '<input type="hidden" name="{$field[\'name\']}">';
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$multiple = '[]" multiple="multiple" data-multiple="1';
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}
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// Check if we're allowing an empty form. If so, create a default option
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if ($field['allow_null']) {
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$field_options .= '<option value="">' . __('- Select a form -', 'acf-gravityforms-add-on') . '</option>';
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}
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// Loop trough all our choices
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foreach ($field['choices'] as $formId => $formTitle) {
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$selected = '';
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if ((is_array($field['value']) && in_array($formId, $field['value'], false))
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|| (int)$field['value'] === (int)$formId
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) {
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$selected = ' selected';
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}
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$field_options .= '<option value="' . $formId . '"' . $selected . '>' . $formTitle . '</option>';
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}
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// Start building the html for our field
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$field_html = $hiddenField;
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$field_html .= '<select id="' . $fieldId . '" name="' . $field['name'] . $multiple . '">';
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$field_html .= $field_options;
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$field_html .= '</select>';
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echo apply_filters('acf-gravityforms-add-on/field_html', $field_html, $field, $field_options, $multiple);
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}
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/**
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* Return a form object when not empty
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*
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* @param $value
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* @param $postId
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* @param $field
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* @return array|bool
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*/
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public function format_value($value, $postId, $field)
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{
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return $this->processValue($value, $field);
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}
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/**
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*
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* This filter is applied to the $value before it is updated in the db
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*
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* @param $value - the value which will be saved in the database
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* @param $post_id - the $post_id of which the value will be saved
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* @param $field - the field array holding all the field options
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*
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* @return $value - the modified value
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*/
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public function update_value($value)
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{
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// Strip empty array values
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if (is_array($value)) {
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$value = array_values(array_filter($value));
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}
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return $value;
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}
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/**
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* Check what to return on basis of return format
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*
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* @param $value
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* @param $field
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* @return array|bool|int
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*/
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public function processValue($value, $field)
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{
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if (is_array($value)) {
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$formObjects = [];
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foreach ($value as $key => $formId) {
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$form = $this->processValue($formId, $field);
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//Add it if it's not an error object
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if ($form) {
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$formObjects[$key] = $form;
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}
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}
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// Return the form object
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if (!empty($formObjects)) {
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return $formObjects;
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}
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// Else return false
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return false;
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}
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// Make sure field is an array
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$field = (array)$field;
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if (!empty($field['return_format']) && $field['return_format'] === 'id') {
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return (int)$value;
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}
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$form = GFAPI::get_form($value);
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//Return the form object if it's not an error object. Otherwise return false.
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if (!is_wp_error($form)) {
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return $form;
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}
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return false;
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}
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/**
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* Check if we actually have forms that we can use for our field
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*
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* @return bool
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*/
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public function hasValidForms()
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{
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// Stop if Gravityforms is not active
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if (!class_exists('GFAPI')) {
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$this->notices->isGravityformsActive(true, true);
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return false;
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}
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// Check if there are forms and set our choices
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if (!$this->forms) {
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$this->notices->hasActiveGravityForms(true, true);
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return false;
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}
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return true;
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}
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}
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