Twig Merge Dynamic Key. We have the following mymodule_preprocess_node hook where we add two

We have the following mymodule_preprocess_node hook where we add two arrays with two key-value pairs. The merge filter also works on hashes: For hashes, the merging process occurs on the keys: if the key does not already exist, it is added For hashes, the merging process occurs on the keys: if the key does not already exist, it is added but if the key already exists, its value is overridden. Internally, Twig uses the PHP array_merge function. The attribute function lets you access an attribute, method, Many Twig templates will have one or more Attribute objects passed in as variables. You TWIG, dynamic associative array key Asked 9 years, 2 months ago Modified 9 years, 2 months ago Viewed 8k times I spent some time trying to create this kind of array using twig, but couldn't get the merge to work correctly. For some reason, the merge replaces the value of "key" (i. The arrow function receives the value of the sequence or Hi all, Merge filter does not work when trying to provide numerical array keys. It supports Traversable objects by transforming those to arrays. You can use attribute for using a dynamic value as key, but not sure how it will work in nested structures. keys The keys filter returns the keys of a sequence or a mapping. e slug) with the string However, developers often encounter a perplexing issue: when adding non-underscore attributes to an array using `merge ()`, the intended key is unexpectedly replaced with the literal string For hashes, the merging process occurs on the keys: if the key does not already exist, it is added but if the key already exists and aren't numbers its value is overridden New values are added at the end of the existing ones. Instead, you have to merge array with another array. The merge_deep filter merges two arrays together recursively. 0 to allow a smoother upgrade path. The job of the Attribute object is to store a set of HTML attributes, providing the . Given one array: You should implement this as a filter or function extension to Twig then, not an an object that takes dynamic parameters. Yes, for sure, but shouldn't the documentation get updated for the expected behavior (that it will always append the values, if the array keys are integers)? Something like: Until now, we've been working with simple values like "pageTitle" or "products", which is an array that contains simple values where we loop Learn how to iterate over object properties in Twig, a templating engine for PHP, with practical examples and solutions. In fact, I have done exactly that in this fork here (with NOTE: This Symfony2 / Twig - getting array from dynamic array key is not helping me, because it only explains how to use the value like this v[value] or this v[key] but not in the Introduction One of Twig’s most powerful features is the ability to dynamically create and access variables. If the key is 0 or "0", it will NOT be replaced, however if a string array key is used such as "someKey", the actual To loop through an array with keys in Twig, you can use the for loop and access the key and value of each element in the array using the loop variable. For mappings, the merging process occurs on the keys; if the key does not already exist, it is added but if the key already exists, its value is overridden: I am trying to add pairs of key value to an array with their current values for all those attributes not starting by '_'. Unlike traditional programming languages, Twig, the templating filter The filter filter filters elements of a sequence or a mapping using an arrow function. I would argue that 15 In Twig you can't just push elements to an array. It is useful when you want to iterate over the keys of a sequence or a mapping: Doing this in twig will probably be annoying. Tip: If you want to ensure that some Twig Internals How does Twig work? The Lexer The Parser The Compiler Deprecated Features Functions Extensions Nodes Node Visitors Parser find first format format_currency format_date format_datetime format_number format_time html_to_markdown inline_css inky_to_html invoke join Note that this function will still be available in Twig 4. I then created a plugin and a templateVariable to do the search and jvasseur commented Oct 28, 2015 This is cased because the twig merge filter uses php array_merge function which doesn't preserve keys when merging arrays with numeric keys. For hashes, the merging process occurs on the keys: if the key does not already exist, it is added but if the key already exists, its value is overridden. If the same array key exists in both arrays and the key is not a number, then the one in the second array will overwrite the first one. In twig, we would like to merge the values. How would we merge the two arrays in But like I previously commented inside the closed issue's comments, you can't expect every developer having this issue that they'll change numerical key to string key.

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