default options pages used on plugins

_defaultSettings.md

Default Settings

The usual settings implemented within plugin files. Here just to speed things up. Implement.

Add $this->sections = $this->get_sections(); to __construct, and define add_action('admin_init' [$this, 'register_settings']);

plugin.php

/**
     * Register each of the setting groups.
     * @since  1.0.0
    */
    public function register_settings()
    {
        foreach( $this->sections as $section ) {
            add_settings_section( $section['id'], $section['title'], $section['callback'], $section['page'] );
        }

        $fields = $this->get_fields();

        foreach( $fields as $field ) {
            $this->create_field( $field );
        }

        foreach( $this->sections as $section ) {
            register_setting( $section['page'], $section['page'], [$this, 'validate_options'] );
        }
    }

    /**
     * Render each section description in p tags.
     * @since 1.0.0
     */
    public function render_section( $desc )
    {
        echo "<p></p>";
    }

     /**
     * Geat each of the sections for the admin page.
     * @return array $sections
     */
    public function get_sections()
    {
        $sections = [];

        $sections[$this->prefix . 'general'] = [
          'id'         => $this->prefix . 'general',
          'page'       => $this->prefix . 'general_page',
          'title'      => 'General',
          'callback'   => [$this, 'render_section'],
        ];

        return $sections;
    }

    /**
     * set the fields for the sections.
     * @return array $fields
     */
    public function get_fields()
    {
        $fields = [];
     
        # General
        $fields[] = [
            'id'             => $this->prefix . 'post_count',
            'title'          => 'Text Field',
            'callback'       => [$this, 'render_field'],
            'page'           => $this->prefix . 'general_page',
            'section'        => $this->prefix . 'general',
            'desc'           => 'description.',
            'type'           => 'text',
            'default_value'	 => '',
            'class'          => ''
        ];

        return $fields;
    }

    /**
     * create the fields from the data we define above
     * @param array $field
     */
    public function create_field($field)
    {
        extract ($field);

        $field_args = [
            'id'            => $id,
            'page'          => $page,
            'type'          => $type,
            'desc'          => $desc,
            'default_value' => $default_value,
            'class'         => $class
        ];

        add_settings_field( $id, $title, [$this, 'render_field'], $page, $section, $field_args );
    }

    /**
     * set the formatting on the back-end for each of the field
     */
    public function render_field ($field_args = [])
    {
        extract( $field_args );
        $options = get_option( $page );

        $html = '<div class="' . $class . '">';

        switch ($type) {
            case 'text':
                $value = isset($options[$id]) ? $options[$id] : '';
                $html .= '<input type="text" id="' . $id . '" name="' . $page . '[' . $id . ']" value="' . $value . '" />';
                $html .= '<br/><span class="field-desc">' . $desc . '</span>';
                break;
            case 'number':
                $value = isset($options[$id]) ? $options[$id] : '';
                $html .= '<input type="number" id="' . $id . '" name="' . $page . '[' . $id . ']" value="' . $value . '" />';
                $html .= '<br/><span class="field-desc">' . $desc . '</span>';
                break;
            case 'checkbox':
                $html .= '<input type="checkbox" id="' . $id . '" name="' . $page . '[' . $id . ']" value="1" ' . checked (1, isset ($options[$id]) ? $options[$id] : 0, false) . '/>';
                $html .= '<label for="' . $id . '">&nbsp;'  . $desc . '</label>';
                break;

            default:
                break;
        }

        $html .= '</div>';
        echo $html;
    }

    /**
     * validate our inputs
     */
    public function validate_options($input)
    {
        $output = [];

        foreach ( $input as $key => $value ) {
            if ( isset( $input[$key] ) )
                $output[$key] = strip_tags( stripslashes( $input[$key] ) );
        }

        return apply_filters('validate_options', $output, $input);
    }