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<?php |
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function jetpack_ratings_block_get_attributes( $style = 'star', $max_rating = 5 ) { |
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return array( |
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'rating' => array( |
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'type' => 'number', |
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'default' => 1, |
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), |
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'maxRating' => array( |
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'type' => 'number', |
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'default' => $max_rating, |
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), |
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'color' => array( |
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'type' => 'text', |
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), |
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'ratingStyle' => array( |
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'type' => 'text', |
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'default' => $style, |
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), |
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'className' => array( |
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'type' => 'text', |
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), |
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'align' => array( |
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'type' => 'text', |
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'default' => 'left', |
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), |
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); |
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} |
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add_action( |
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'init', |
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function() { |
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jetpack_register_block( |
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'jetpack/rating-star', |
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array( |
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'render_callback' => 'jetpack_ratings_render_block', |
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'attributes' => jetpack_ratings_block_get_attributes( 'star' ), |
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) |
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); |
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jetpack_register_block( |
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'jetpack/rating-spiciness', |
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array( |
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'render_callback' => 'jetpack_ratings_render_block', |
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'attributes' => jetpack_ratings_block_get_attributes( 'spiciness' ), |
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) |
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); |
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jetpack_register_block( |
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'jetpack/rating-priciness', |
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array( |
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'render_callback' => 'jetpack_ratings_render_block', |
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'attributes' => jetpack_ratings_block_get_attributes( 'priciness', 4 ), |
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) |
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); |
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} |
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); |
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function jetpack_ratings_get_symbols( $attributes ) { |
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$icons = array(); |
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if ( $attributes['ratingStyle'] === 'spiciness' ) { |
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$amp_symbol = '🌶️'; |
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} |
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if ( $attributes['ratingStyle'] === 'priciness' ) { |
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$amp_symbol = '💲'; |
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} |
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if ( $attributes['ratingStyle'] === 'star' ) { |
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$amp_symbol = '⭐'; |
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} |
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// Output SVGs for high fidelity contexts, then color them according to rating. |
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// These are hidden by default, then unhid when CSS loads. |
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for ( $pos = 1; $pos <= $attributes['maxRating']; $pos++ ) { |
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$icons[] = '<span style="display: none;">' . jetpack_ratings_build_svg( $attributes, $pos ) . '</span>'; |
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} |
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// Output fallback symbols for low fidelity contexts, like AMP. |
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$amp_fallback = ''; |
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for ( $i = 0; $i < $attributes['rating']; $i++ ) { |
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$amp_fallback .= $amp_symbol; |
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} |
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return '<p>' . $amp_fallback . '</p>' . implode( $icons ); |
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} |
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// The following filter is added only to support the old 0.6.2 version of the AMP plugin. |
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// This entire seciton can be removed once we're on version a newer version. |
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// Confirmed that version 1.4.1 (or presumably newer) does not need this filter. |
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add_action( 'amp_post_template_css', 'jetpack_ratings_amp_add_inline_css', 11 ); |
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function jetpack_ratings_amp_add_inline_css() { |
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echo '.wp-block-jetpack-rating-star span, .wp-block-jetpack-rating-spiciness span, .wp-block-jetpack-rating-priciness span { display: none; }'; |
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} |
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function jetpack_ratings_render_block( $attributes ) { |
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$classname = empty( $attributes['className'] ) ? '' : ' ' . $attributes['className']; |
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return sprintf( |
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'<div class="%1$s" style="text-align:%3$s">%2$s</div>', |
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esc_attr( 'wp-block-jetpack-rating-' . $attributes['ratingStyle'] . $classname ), |
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jetpack_ratings_get_symbols( $attributes ), |
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( isset( $attributes['align'] ) ) ? esc_attr( $attributes['align'] ) : '' |
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); |
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} |
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function jetpack_ratings_build_svg( $attributes, $pos ) { |
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$classname_whole = ( $attributes['rating'] >= ( $pos - 0.5 ) ) ? '' : 'is-rating-unfilled'; |
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$classname_half = ( $attributes['rating'] >= $pos ) ? '' : 'is-rating-unfilled'; |
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$color = empty( $attributes['color'] ) ? 'currentColor' : esc_attr( $attributes['color'] ); |
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if ( $attributes['ratingStyle'] === 'spiciness' ) { |
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return jetpack_ratings_get_svg_spiciness( $classname_whole, $classname_half, $color ); |
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} |
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if ( $attributes['ratingStyle'] === 'priciness' ) { |
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return jetpack_ratings_get_svg_priciness( $classname_whole, $classname_half, $color ); |
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} |
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return jetpack_ratings_get_svg_star( $classname_whole, $classname_half, $color ); |
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} |
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function jetpack_ratings_get_svg_star( $classname_whole, $classname_half, $color ) { |
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return <<<ELO |
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<span> |
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
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<path class="{$classname_whole}" fill="{$color}" stroke="{$color}" d="M12,17.3l6.2,3.7l-1.6-7L22,9.2l-7.2-0.6L12,2L9.2,8.6L2,9.2L7.5,14l-1.6,7L12,17.3z" /> |
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</svg> |
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</span> |
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<span> |
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
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<path class="{$classname_half}" fill="{$color}" stroke="{$color}" d="M12,17.3l6.2,3.7l-1.6-7L22,9.2l-7.2-0.6L12,2L9.2,8.6L2,9.2L7.5,14l-1.6,7L12,17.3z" /> |
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</svg> |
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</span> |
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ELO; |
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} |
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function jetpack_ratings_get_svg_spiciness( $classname_whole, $classname_half, $color ) { |
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return <<<ELO |
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<span> |
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
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<path class="{$classname_whole}" fill="{$color}" stroke="{$color}" |
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d="M13.8 9l1.2-.8c.6.3 1.1 1 1.1 1.8v11.8s-8-1.8-8-10.8v-1c0-.7.4-1.4 1-1.7l1.3.7L12 8l1.8 1zM10 2c1.5 0 2.8 1.1 3 2.6 1 .3 1.8 1 2.2 2l-1.5.9-1.8-1-1.6 1-1.5-.8c.4-1 1.2-1.7 2.2-2-.2-.4-.6-.7-1-.7V2z" /> |
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</svg> |
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</span> |
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<span> |
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
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<path class="{$classname_half}" fill="{$color}" stroke="{$color}" |
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d="M13.8 9l1.2-.8c.6.3 1.1 1 1.1 1.8v11.8s-8-1.8-8-10.8v-1c0-.7.4-1.4 1-1.7l1.3.7L12 8l1.8 1zM10 2c1.5 0 2.8 1.1 3 2.6 1 .3 1.8 1 2.2 2l-1.5.9-1.8-1-1.6 1-1.5-.8c.4-1 1.2-1.7 2.2-2-.2-.4-.6-.7-1-.7V2z" /> |
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</svg> |
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</span> |
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ELO; |
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} |
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function jetpack_ratings_get_svg_priciness( $classname_whole, $classname_half, $color ) { |
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return <<<ELO |
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<span> |
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
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<path class="{$classname_whole}" fill="{$color}" stroke="{$color}" |
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d="M11.8 10.9c-2.27-.59-3-1.2-3-2.15 0-1.09 1.01-1.85 2.7-1.85 1.78 0 2.44.85 2.5 2.1h2.21c-.07-1.72-1.12-3.3-3.21-3.81V3h-3v2.16c-1.94.42-3.5 1.68-3.5 3.61 0 2.31 1.91 3.46 4.7 4.13 2.5.6 3 1.48 3 2.41 0 .69-.49 1.79-2.7 1.79-2.06 0-2.87-.92-2.98-2.1h-2.2c.12 2.19 1.76 3.42 3.68 3.83V21h3v-2.15c1.95-.37 3.5-1.5 3.5-3.55 0-2.84-2.43-3.81-4.7-4.4z" /> |
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</svg> |
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</span> |
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<span> |
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
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<path class="{$classname_half}" fill="{$color}" stroke="{$color}" |
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d="M11.8 10.9c-2.27-.59-3-1.2-3-2.15 0-1.09 1.01-1.85 2.7-1.85 1.78 0 2.44.85 2.5 2.1h2.21c-.07-1.72-1.12-3.3-3.21-3.81V3h-3v2.16c-1.94.42-3.5 1.68-3.5 3.61 0 2.31 1.91 3.46 4.7 4.13 2.5.6 3 1.48 3 2.41 0 .69-.49 1.79-2.7 1.79-2.06 0-2.87-.92-2.98-2.1h-2.2c.12 2.19 1.76 3.42 3.68 3.83V21h3v-2.15c1.95-.37 3.5-1.5 3.5-3.55 0-2.84-2.43-3.81-4.7-4.4z" /> |
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</svg> |
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</span> |
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ELO; |
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} |
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If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: