[Form] Fixed SearchAndRenderBlockNode to really ignore empty labels
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@ -33,44 +33,72 @@ class SearchAndRenderBlockNode extends \Twig_Node_Expression_Function
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if (isset($arguments[1])) {
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if ('label' === $blockNameSuffix) {
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// The "label" function expects the label in the second argument.
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// The array of variables is given in the third argument
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$lineno = $arguments[1]->getLine();
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// The "label" function expects the label in the second and
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// the variables in the third argument
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$label = $arguments[1];
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$variables = isset($arguments[2]) ? $arguments[2] : null;
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$lineno = $label->getLine();
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if ($label instanceof \Twig_Node_Expression_Constant) {
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// If the label argument is given as a constant, we can either
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// strip it away if it is empty, or integrate it into the array
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// of variables at compile time.
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$labelIsExpression = false;
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// Only insert the label into the array if it is not empty
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if (!twig_test_empty($label->getAttribute('value'))) {
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$originalVariables = $variables;
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$variables = new \Twig_Node_Expression_Array(array(), $lineno);
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$givenVariables = isset($arguments[2]) ? $arguments[2] : $variables;
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$labelKey = new \Twig_Node_Expression_Constant('label', $lineno);
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$found = false;
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// If the label is listed in the variables, the label given
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// in the arguments should take precedence in the following form:
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// labelInArgs|default(labelInAttr)
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foreach ($givenVariables->getKeyValuePairs() as $pair) {
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if ((string) $labelKey === (string) $pair['key']) {
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$pair['value'] = new \Twig_Node_Expression_Filter_Default(
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$arguments[1],
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new \Twig_Node_Expression_Constant('default', $lineno),
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new \Twig_Node(array($pair['value']), array(), $lineno),
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$lineno
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);
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$found = true;
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}
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if (null !== $originalVariables) {
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foreach ($originalVariables->getKeyValuePairs() as $pair) {
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// Don't copy the original label attribute over if it exists
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if ((string) $labelKey !== (string) $pair['key']) {
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$variables->addElement($pair['value'], $pair['key']);
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}
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}
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}
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// If the label does not exist in the variables, simply add it
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if (!$found) {
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$variables->addElement($arguments[1], $labelKey);
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// Insert the label argument into the array
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$variables->addElement($label, $labelKey);
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}
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} else {
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// The label argument is not a constant, but some kind of
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// expression. This expression needs to be evaluated at runtime.
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// Depending on the result (whether it is null or not), the
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// label in the arguments should take precedence over the label
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// in the attributes or not.
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$labelIsExpression = true;
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}
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} else {
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// All other functions than "label" expect the variables
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// in the second argument
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$label = null;
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$variables = $arguments[1];
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$labelIsExpression = false;
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}
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if (null !== $variables || $labelIsExpression) {
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$compiler->raw(', ');
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if (null !== $variables) {
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$compiler->subcompile($variables);
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}
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if ($labelIsExpression) {
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if (null !== $variables) {
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$compiler->raw(' + ');
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}
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// Check at runtime whether the label is empty.
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// If not, add it to the array at runtime.
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$compiler->raw('(twig_test_empty($_label_ = ');
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$compiler->subcompile($label);
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$compiler->raw(') ? array() : array("label" => $_label_))');
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}
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}
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}
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}
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$compiler->raw(")");
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@ -98,9 +98,33 @@ class SearchAndRenderBlockNodeTest extends TestCase
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$compiler = new \Twig_Compiler(new \Twig_Environment());
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// "label" => null must not be included in the output!
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// Otherwise the default label is overwritten with null.
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$this->assertEquals(
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sprintf(
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', array("label" => null))',
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\')',
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$this->getVariableGetter('form')
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),
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trim($compiler->compile($node)->getSource())
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);
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}
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public function testCompileLabelWithEmptyStringLabel()
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{
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$arguments = new \Twig_Node(array(
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new \Twig_Node_Expression_Name('form', 0),
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new \Twig_Node_Expression_Constant('', 0),
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));
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$node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
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$compiler = new \Twig_Compiler(new \Twig_Environment());
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// "label" => null must not be included in the output!
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// Otherwise the default label is overwritten with null.
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$this->assertEquals(
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sprintf(
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\')',
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$this->getVariableGetter('form')
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),
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trim($compiler->compile($node)->getSource())
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@ -141,9 +165,12 @@ class SearchAndRenderBlockNodeTest extends TestCase
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$compiler = new \Twig_Compiler(new \Twig_Environment());
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// "label" => null must not be included in the output!
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// Otherwise the default label is overwritten with null.
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// https://github.com/symfony/symfony/issues/5029
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$this->assertEquals(
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sprintf(
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', array("foo" => "bar", "label" => null))',
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', array("foo" => "bar"))',
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$this->getVariableGetter('form')
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),
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trim($compiler->compile($node)->getSource())
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@ -169,7 +196,75 @@ class SearchAndRenderBlockNodeTest extends TestCase
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$this->assertEquals(
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sprintf(
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', array("foo" => "bar", "label" => _twig_default_filter("value in argument", "value in attributes")))',
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', array("foo" => "bar", "label" => "value in argument"))',
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$this->getVariableGetter('form')
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),
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trim($compiler->compile($node)->getSource())
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);
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}
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public function testCompileLabelWithLabelThatEvaluatesToNull()
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{
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$arguments = new \Twig_Node(array(
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new \Twig_Node_Expression_Name('form', 0),
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new \Twig_Node_Expression_Conditional(
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// if
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new \Twig_Node_Expression_Constant(true, 0),
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// then
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new \Twig_Node_Expression_Constant(null, 0),
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// else
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new \Twig_Node_Expression_Constant(null, 0),
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0
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),
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));
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$node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
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$compiler = new \Twig_Compiler(new \Twig_Environment());
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// "label" => null must not be included in the output!
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// Otherwise the default label is overwritten with null.
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// https://github.com/symfony/symfony/issues/5029
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$this->assertEquals(
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sprintf(
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', (twig_test_empty($_label_ = ((true) ? (null) : (null))) ? array() : array("label" => $_label_)))',
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$this->getVariableGetter('form')
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),
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trim($compiler->compile($node)->getSource())
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);
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}
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public function testCompileLabelWithLabelThatEvaluatesToNullAndAttributes()
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{
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$arguments = new \Twig_Node(array(
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new \Twig_Node_Expression_Name('form', 0),
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new \Twig_Node_Expression_Conditional(
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// if
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new \Twig_Node_Expression_Constant(true, 0),
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// then
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new \Twig_Node_Expression_Constant(null, 0),
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// else
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new \Twig_Node_Expression_Constant(null, 0),
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0
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),
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new \Twig_Node_Expression_Array(array(
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new \Twig_Node_Expression_Constant('foo', 0),
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new \Twig_Node_Expression_Constant('bar', 0),
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new \Twig_Node_Expression_Constant('label', 0),
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new \Twig_Node_Expression_Constant('value in attributes', 0),
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), 0),
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));
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$node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
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$compiler = new \Twig_Compiler(new \Twig_Environment());
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// "label" => null must not be included in the output!
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// Otherwise the default label is overwritten with null.
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// https://github.com/symfony/symfony/issues/5029
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$this->assertEquals(
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sprintf(
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'$this->env->getExtension(\'form\')->renderer->searchAndRenderBlock(%s, \'label\', array("foo" => "bar", "label" => "value in attributes") + (twig_test_empty($_label_ = ((true) ? (null) : (null))) ? array() : array("label" => $_label_)))',
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$this->getVariableGetter('form')
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),
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trim($compiler->compile($node)->getSource())
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