Freemarker iterate list of objects

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// this takes the data and populates the object, also works. All you have to do is add the result of iterator() on your JsonArray to the context. name]. setting. Element. addAttribute( "userList", users); return "home" ; Here the list is called userList, and we can use th:each to loop through this list in the home. spring. I have tried to split this into a list and access the key, value pairs as follows: <#list m?keys as key>. Detail exception message: 1. Passing a List of Objects to Freemarker and then Looping. productList. Note that not all hashes support this (ask the programmer if a certain hash allows this or not). Apr 8, 2016 · I want to print a list of objects which contains other object with the FreeMarker language. So I ended up creating the versions of these hashtables inti and, since i had numbers as keys in my hashtables, i was able to do the following in my template: Feb 13, 2015 · How to retrive a List objects from HashMap and iterate in free marker template? 6 How can I use Freemarker to show the List<Map<String,Object>> data? 7 Oct 20, 2022 · This is an algorithm question, not really a FreeMarker question. etc. When you supply a value for the directive parameter: You have Dec 29, 2015 · 1. ftl of list while iterating it. instances. It also demonstrates the usage of macros. <#list groups[groupKey] as item> // Exception threw here, detail message is pasted below. Oct 6, 2016 · version 1. It also happens that when we want to generate JSON from java collection, we need to append comma on each iteration except the last Jan 5, 2024 · In this template, we use the Freemarker syntax to iterate over a list of employees and generate the JSON object for each employee. Mar 1, 2015 · </#list> </#list> If I remove the iteration from the second list (<#list subscriptionsWithPiNotices[s] as piNotice>) it all works (that is iterating over the map keys, but when I add the second part, trying to iterate over the map-s value, i get a Null / missing exception. It works perfectly here and is probably the ideal solution. <#if service['id']==id>. x as i> $ {i} </#list>. setSomething(newValue)), but to change what element is stored in the list as you are iterating it, you need to stick with an index-based Jun 16, 2013 · What you put after . getpeopleMapByGender()&gt; How to loop through variable names using freemarker. <@spring. edited May 31, 2011 at 19:28. put(key, value); I am using LinkedHashMap as I want to maintain insertion order. You can see the way I iterate through the "assets" variable in my question. 11. <#if key == "Description ">. key1, outerHash,key2 etc. put("status","testStatus") it is maintaining the reference to same HashMap. Working with List/Array and HashMap in FreeMarker. So create a Map<String, Object> dataModel, put that ArrayList into that with a meaningful name, something like dataModel. pages = [] I then create a new Page object and add other page objects to it. So we can iterate over key-value pair using getKey () and getValue () methods of Map. When I try to get the List object using below code snippet <#list ElementList as key> <#assign fh =ElemmentListMap> ${fh[key]} </#list> Feb 18, 2016 · and I would like to display the keywords using Freemarker: Apple, Banana How to do that? PS: I read through the manual and found some articles suggesting using <#list> , but the output is: Apple Aug 26, 2015 · 2. // we end up with a list of subclasses. properties?values. Accessing properties of Objects within <#list> 2. 15. it is converted from *. summer, 4. Passing a List of Objects to Freemarker and then Jan 20, 2010 · What about using a template engine like Freemarker, Velocity or StringTemplate: replace [[by ${and ]] by } create a model from a properties file containing the replacements; process templateHTML; Here an example with Freemarker (without Exception handling) @iX3 - That would be true of an index-based iteration as well; assigning a new object to e won't change what's in the list; you have to call list. SimpleSequence cannot be cast to java. List<UserInfo> users = userService. data. Step 3: Generate the JSON Output. Adding custom data source in Suitelet: May 13, 2016 · Freemarker iterating over hashmap keys. Unfortunately, I'm getting a parse exception: Passed in Java Object: Map<Owner,Pet> ownerPetMap; Oct 10, 2016 · According to the comments you want to transform each item of a sequence to create another sequence (list or array FreeMarker doesn't care). html thymeleaf template as shown below. Freemarker : list of objects which contains other object. This is the Apr 8, 2015 · Is there a way to get list item by index in freemarker template, maybe something like this: &lt;#assign i = 1&gt; ${fields}[i] i'm new to freemarker. It tries very hard to make it impossible to manipulate data, and that includes modifying arrays or maps, etc. 2". FreeMarker template error: The following has evaluated to null or missing: May 20, 2015 · public HashMap<String, Object> getRoot() {. I use the latest freemarker version 2. Thus, you may don't need that #assign at all, and you could write hashmap2[nodes. item: Name of the loop variable (not an expression) The various "parts" between the tags can contain arbitrary FTL (including nested list -s) Apr 14, 2015 · Well, you have mixed up and missed a few things, but I see you have realized that in your comment since that. Freemarker get element from list. input. You can change the contents of e (e. micro”. The following code does exactly that. My Java Code show like below: May 26, 2017 · 18. But I need to cast to the concret class to get specific attribut. Its a normal thing that we get confused between looping when we are using list, hashmap or array in freemarker . collection. Entry<K, V>>) of the mappings contained in this map. I'm using Freemarker to format some emails. <#assign testList2 = []>. Dec 15, 2020 · Unless you are using an old FreeMarker (or some funny legacy ObjectWrapper), you should use <#list map as key, value>, instead of listing the map keys and then call map[key]. Use the `for_each` loop or the `count` attribute. Apparently, FreeMarker can't work with Hashtables with as parameters. freemarker iterating sequence of compound object. answered May 31, 2011 at 18:24. I pass the following to the view: Map&lt;ApplicationPropertyDefinition, Collection&lt;ApplicationProperty&gt;&g Mar 23, 2013 · Apparently, you have passed value to FreeMarker as the data-model, but the data-model must be a Map<String, > or a TemplateHashModel. If you need the key too, then you should use <#list invoice. Once you have defined the list of values, you can use the `for_each` loop to iterate over them and create or update resources. The below block is purely conceptual, but referencing the attribute within the expression is where I get confused. addAttribute("history_list", list); Jun 2, 2024 · These built-ins you can only use with the loop variable of the list and items directives (and of the deprecated foreach directive). Sep 9, 2020 · Because I have used the for_each value for iterating through the "assets" variable. I would like to iterate over a nested collection within a Map in Freemarker 2. These values can change all the time, so we have to define them manually every instance where we use this, but I want to be able to list them in a sequence and then loop through and include them when object. You can do a similar thing with the keys of a map as shown below. add(new Item(2, "def")); The list is added to the template: MODEL. In Freemarker Template I am able to access the data. 5" to the output (or possibly "6,5" if the language of your output is not US English). template_exception_handler=html_debug outputs the stack trace information to the client, formatting it so it will be usually well readable in the browser, and then re-throws the exception. , e. Aug 13, 2019 · I am trying to iterate over a JSON object in a <#list> iteration in Freemarker and write out the same JSON in a different form. There it comes down to: Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Oct 29, 2019 · service_types = "${join(",",each. For example Nov 7, 2014 · Freemarker: iterate over nested array. Here you create a new sequence that wraps the two other sequences. private String id; Oct 17, 2013 · 1. But, the other (currently accepted) answer is not what anyone should do. 11. When you do root. page&gt; wh. Use a for loop to iterate over the objects directly (as opposed to iterating over their indexes): for test_case in test_cases: print test_case. How to iterate over a JSON returned array in freemarker? 2. entrySet () method returns a collection ( Set<Map. name = name self. getObjectWrapper(). Jan 25, 2021 · In this case, the view name is “home. Freemarker iterating over hashmap in list of map. toString() ). Jul 31, 2013 · return Maps. e. Also, you are adding 4 lists for the same key, in datamodel map. If you really can't upgrade, then just list the keys, and use row[key] as the value, as I said above. If you want to access the data using the JavaScript then you can use ajax request on page load on controller and it sends you a response with data and then process that data and print on FTL page. Code Samples. This tutorial explains how can you define FreeMarker templates and how can you generate output based on these templates. So I cannot do that. Jul 15, 2016 · Thanks for the answer, but the above still uses #list tag which again iterates through the hashmap object rather than fetching values by keys. The syntax for the `for_each` loop is as follows: resource “aws_instance” “webservers” {. I am trying to iterate over the map in my freemarker code as below. Jun 1, 2021 · I need to loop through this parameter (additionalData) to fetch the values in apache freemarker and pass it into individual json variables to do an HTTP post to another API. jsp to *. Using old versions can cost more of your time. The else part is optional, and is only supported since FreeMarker 2. Sep 17, 2018 · In Freemarker getting a value from a map or array is the same, using square brackets: packageListing[key][index] Retrieving data from a sequence This is the same as for hashes, but you can use the square bracket syntax only, and the expression in the brackets must evaluate to a number, not a string. for_each = var. g. Mar 24, 2024 · In my Suitelet script I add custom data source to renderer. Now that you have your template ready, you can use the Freemarker API to generate the JSON output. The output will be: 1 2 3. My ftl file show like below: <#list userlist>. put("clusters", clusters); clusters describes my clusters and cluster. Here's an example of how you can do it: Mar 2, 2022 · Y. @AllArgsConstructor. Jan 8, 2024 · spring. Instead of root['abc'], you could also use root. 23 I have list which contains the User object, User object is simple which only contains the name property. For a report I want to output this result with freemarker into a . Jun 14, 2014 · and you can simply iterate list, you don't need for loop. service_types)}" It will create actual number of instance and when you remove for example middle one of three (if you create three:)), terraform will remove what we asked. 4, 06. Problem is, I cannot seem to be able to iterate over object keys. properties as k, v>${k} = ${v}</#list> syntax. This should result in an array containing "value 1" through 4. Freemarker is smart enough to handle it from there, and you can reference it in your template like you do any other list-like variable. I want iterate though each of them and get thier component name and value. <#list flowList as flow>. As you only use the property values, you should just directly list invoice. rooms? – Feb 8, 2020 · How to check for null List in freemarker. ident. apache. How can I iterate through each. 2016. return data. public String getUsers(Model model) {. 11". It is not creating a copy of the testStatus HashMap. entrySet(); public void addData(final String key, final String value) {. Class Page(object) def __init__(self, name): self. createDatetime" />. My list have "Colonne" and "ColonneGroup" object. As of the order in which the values are returned, the same applies as with the keys built-in; see there. pages = [ &lt;#list Jan 14, 2020 · It returns a new sequence where all elements are replaced with the result of the parameter lambda, function, or method. Here is what I have so far. This works well. x-s are fully backward compatible. winter, 2. Try this code to iterate through the Nov 24, 2016 · I need to do some arithmetic operations in freemarker template. The result is the sequence of these sequences. opr. Entry <K, V>. Freemarker - How to access value in array that's been passed in? 1. Sep 19, 2019 · I need to iterate through a list made from the "split" built-in yet I haven't succeeded. Which really is a shame, as IMHO I regard Freemarker far more advanced and far more simple to use in general when compared to JSPs. Entry<String, String>> getDataEntries() {. Sep 16, 2011 · When iterating on the same loop twice, I got an error: freemarker. This allows you to do: autos?map(auto -> auto. "3. ${item. setOperationName(operation. name} </#items>. Sep 24, 2016 · Freemarker: iterating nested list in hash. Hence you need to add the index in the tag. <#assign testList1 = []>. You can create a configuration and set your ObjectMapper instance as follows: cfg. 3. org Feb 8, 2018 · ArrayList<Item> list = new ArrayList<>(); list. So if you are using razor your code should be like this Jul 14, 2016 · i want to get number of item in *. Or, use the map itself as the data-model. Hot Network Questions Dec 12, 2016 · I iterate to a list of IColonne object. My goal is to pass a list of Objects (within a Map) so that I may iterate over them in the FTL. But if you really want to do this in FreeMarker (as opposed to in Java), you can use sequence concatenation: <#assign myList = myList + [newItem]>. The deserialization methods of jsonFactoryUtil will return back an object that is apparently automagically mapped to a Freemarker hash. Unfortunately there's no map function in FTL (as of 2. </#list>. I want the output to be like : A= apple,mango,banana B = x,e,t, My code: abc(). pages. Otherwise you can iterate through the services to find the right one. As the syntax differ for each things in freemarker. See full list on freemarker. of loops is that they can iterate over more than just arrays. util. log(item); // Will display contents of the object inside the array } One of the best things about for. Jun 9, 2022 · It's the YAML that doesn't mean what you mean. after populating the HashMap, I put it in Freemarker context along with List of org. This method is most common and should be used if you need both map keys and values in the loop. Not lists & the hashmap which I am looking at contains Keys as String & Value as a list of strings. So now in the macro can know that the first child steps will "3. ){. I want to iterate though the objects in the array and get thier component and thier value. template_exception_handler=ignore skips the failing instructions, letting the template continue executing. I was wondering if there are any other mechanism in Freemarker to handle hashmaps in a more efficient manner – Oct 23, 2012 · Is it possible to iterate though an object that contains a list of objects. This is needed when you post the form back and want the flowlist object as request body in a controller method. ftl file. My question is that after I iterate through "assets" variable in resource. Look this. Some explanation of that follows (loopVar?index returns the 0-based index in the listable value we iterate through): Note that if you pass an collection that wraps an Iterator to the list, you can iterate over its elements only once since Iterators are by their nature one-off objects. 2. Jun 4, 2019 · The form is a FreeMarker template. So then, assuming you have recent FreeMarker version, you can use ?eval_json: <#assign someParsed = someString?eval_json>. <#items as item>. bind item /] On a side note, I find Spring's Freemarker support somewhat buggy sometimes. List opslist = new ArrayList(); for(. The list (object)) is converted to a map that can be used as the for_each value. Example 2: You can use list to count between two numbers, using a numerical range sequence expression: <#assign x=3> <#list 1. Aug 20, 2019 · FreeMarker is basically a write-once language. name}</#assign> you should just write <# May 24, 2018 · But there's a nicer way of listing a hash (since FreeMarker 2. If you only have productList in the top-level JSON map, then add that to the data-model instead of the map itself. I have a list of objects and i need to apply the arithmetic operation like below &lt;#list order. May 2, 2012 · How do I iterate over a hashmap<String,List> in freemarker? abc() takes as input only strings or arrays. 10. When a request is made for the /cars URI, Spring will process the template using the model that it is provided. I'm using freemarker to generate an xml output and having issues accessing properties of nested objects I came across this article on "Stack Overflow", but I still can't get properties and get an invalid reference expression. In my example the first object has 3 components, the scond has 5 and the third has 4 components. BTW, you can write productList["productList"] simply as productList. Freemarker: iterate over Mar 1, 2015 · for those of you who may follow my footsteps. In our template, the #list directive indicates that FreeMarker should loop over the carList object from the model, using car to refer to the current Aug 23, 2019 · I am new to freemarker template. <#assign Ticket_Id_Val = "${m[key]}">. put("infos", value), pass the dataModel to FreeMarker instead of value, and then in the Jun 2, 2024 · values. instance_type = “t2. They are as follows: The Data object: private List<Subclass> subclassInstances; public TransferObject(Data data) {. The last sequence is possibly shorter than the given size, unless the 2nd parameter is given (like mySeq?chunk(3, '-') ), that is the item used to make up the Aug 26, 2013 · Aug 28, 2013 at 13:55. . For example, I have the following class. can someone please help me out here. Jul 8, 2015 · this is my error: FreeMarker template error: For "#list" list source: Expected a sequence or collection, but this evaluated to an extended_hash (HashMap wrapped into f. setSharedVariable("JSON", configuration. Nov 19, 2015 · 2. Such "miscellaneous" objects are usable as FTL strings, so that you can print them directly (and internally that calls obj. &lt;#assign pages = module. t. ArrayList. I am also able to list all the arrays of custom data source. speed) If you want to do this in Java, see: Create list of object from another using Java 8 Streams. foos[${foo_index}]. 25): ${key} - ${value} Upgrade FreeMarker to the latest, 2. freemarker. // your code. return root; then you can access the list of maps under the abc key like this: <#list map?keys as key>. add(new Item(1, "abc")); list. 10. How to get an object from a list of object in Freemarker. house. Aug 5, 2015 · I'm writing a JS Array of objects in a Freemarker template. I am using div rather than table. Dec 17, 2018 · In Apache freemarker template How to fetch values by keys in a hashmap without having to iterate through it as a list 0 Iterating HashMap that has a non-string key-pair and ArrayList as a value Dec 28, 2016 · use data-sly-list. Jun 2, 2024 · This built-in splits a sequence into multiple sequences of the size given with the 1st parameter to the built-in (like mySeq?chunk(3) ). 1. Below code is displaying one element in each row. May 23, 2014 · How to retrive a List objects from HashMap and iterate in free marker template? 2. Jul 29, 2016 · public class Owner {} public class Pet{ public List<String> getToys(); } I have a Map<Owner,Pet> that I want to iterate through, printing out each toy for each pet. html”. After rendering if you look at the HTML it would be like. This makes referencing even nested JSON data easy and "natural", and you can also use the standard Freemarker operators to check for values or provide default values (!): Jun 5, 2012 · 7. FreeMarker Current Date Comparison. You can work around this, however, through concatenation and reassignment: <#assign my_array = my_array + ["value " + i] />. I have a two lists of dates that share some of the same dates. ami = “ami-0123456789abcdef0”. <#assign testMapList = testMap[key]>. I want to separate the testMap into 2 maps testMap1 and testMap2 based on the value of the key in the lists. Each iteration will give you inner HashMap on object outerHash if you know what are going to be the keys, then you can simply access it as outerHash. This is what I have tried. get (i) contains all the elements in one cluster. sequence: Expressions evaluates to a sequence or collection of the items we want to iterate through. Map. I think to achieve what you want do, create and assign a new testStatus HashMap inside your loop at the beginning. abc, but the first version stresses that abc is a hash map key, not a property of root. Note that the above example will not work as you may expected if x is 0, as then it will print 0 and -1. These are the two most common ways to iterate over a list of objects in Terraform. Convert string to JSON in Freemarker. getName()); //gets operation name (iterate and get n no of names) sets it to opr. It should be corrected as below: java. Jun 27, 2013 · 1. using "seq_index_of" as a "Vlookup" i'm able to find the correlation and get the index of the dates that are in both lists. FreeMarker doesn't support modifying collections. If you want to do it "in chunks", the best is to extract the keys in an array. 23. If you can, pass the services model as a map instead of array. Sep 18, 2014 · 3. Best practices for iterating over a list of objects in Terraform. 25), but as far as the sequence is not very long (as then this becomes slow), you can work that around with sequence concatenation: <#assign array Mar 22, 2022 · In Apache freemarker template How to fetch values by keys in a hashmap without having to iterate through it as a list 0 Freemarker: creating a table with a list in a list Oct 3, 2019 · But if he has to list them, then your example can be simplified. In this email I am required to list a number of lines of product information like on an invoice. This MDN documentation explains more generally how to deal with objects and their properties. Nov 14, 2018 · 3. The IColonne interface : public interface IColonne { String getFtlName(); int getWidthPx(final int tableSize); } The Colonne concrete class: Dec 6, 2014 · How to get an object from a list of object in Freemarker. ${v} mouse. This is the generic way, and should be used 99% of the time when you want to loop over objects. @Data //lombok -> generates getters and setters. Freemarker iterate nested array/object. FreeMarker is a Java-based template engine which can be used in stand-alone or servlet-based Java programs. Hence, when you clear() it, all its contents are cleared. name</#assign>. A sequence that contains all the variables (the values in the key-value pairs) in the hash. orderDetails as orderDetail&gt; Jan 17, 2013 · You don't need to check hasOwnProperty when iterating on keys if you're using a simple object (for example one you made yourself with {}). ${service['name']} <#break/>. In both cases you avoid having a productList inside a productList. What are the approaches of protecting against partially initialized objects? Apr 28, 2019 · How to iterate over a JSON returned array in freemarker? 2. outerHash to iterate over the iterator returned value. <#list testMapList as testList>. 0. FreeMarker Tutorial. Element: java. Also, instead of <#assign nodeName>${nodes. public class Inc {. 42. You can iterate over any type of iterable, including maps and objects. w3c. I have a map of list testMap and the list inside the testMap has a list of maps. however, "seq_index_of" gives a string, number, boolean or date/time Mar 10, 2017 · List<List<ClusterEntry>> clusters = new ArrayList<List<ClusterEntry>>(); //fill clusters and the list in clusters. Mar 17, 2024 · FreeMarker can access that list and display it by iterating over its contents. attribute=Y. . But I am having serious issues not including a comma after the last item. 1st is the step to show, and 2nd is the number of that step. [@spring. For example I have a Java object : private String _street; private String _city; and another Java object : private int _nb_room; private Adress _adressHouse; After I create a list with the data of my bdd : Collection<House> housesList = new ArrayList Apr 14, 2012 · I have a Java Hashmap object which stores a key value pair in form of org. for (let item of items) { console. For some conditions, I'd like to skip over the iteration and not write out anything, but Freemakrer still writes out the comma because I use the separator directive: <#sep>,</#sep>. DefaultMapAdapter): – IrApp Jan 4, 2017 · Usually, the problem is that your keys aren't String-s, but some Java objects other than mere numbers/dates/booleans. Currently I am having an issue where I am unable to access the objects properties from within the template. set(index, thing). ${item} </#list>. setTargeting(‘${key?js_string}’,’${key_value_list_map Dec 23, 2009 · Render the keys of a Map. autumn. value. So ${(5 + 8)/2} prints "6. When iterating over a list of objects in Terraform, it is important to follow some best practices to avoid errors and make your code more readable. That's because you are creating a new list in every iteration of the for loop. In the comment you say that you get the whole JSON as a single string. Introduction to FreeMarker. Y. Feb 3, 2020 · In Apache freemarker template How to fetch values by keys in a hashmap without having to iterate through it as a list 0 Iterating HashMap that has a non-string key-pair and ArrayList as a value Dec 3, 2014 · 8. I am getting products list from Spring controller and I want to display 4 products in each row. I want to iterate a List nested in a Map, the data structure is like: // Some code else to put values into groups Freemarker template: ${groupKey} // It's OK here. getUsers(); model. Be aware that the resulting sequence is slow if you try to do indexed access Sep 26, 2012 · If I understood well, you are trying to send the view model from the controller to the view. md file The goal is to have as much Jan 21, 2022 · 1. dom. List First Loop &lt;#assign peopleMap = context. 7. 50. wrap(new ObjectMapper())); throw new RuntimeException(e); Templates created with this configuration can access it as follows to render your object: Feb 3, 2016 · 1. How to get the keys and values of a Map (such as a HashMap) from within a Freemarker template. Any help is appreciated. Aug 18, 2015 · This worked for me: <#assign item>fooList. When you have an item like this: - dev: baseurl: localhost baseport: 8080 that creates an element in a list, but that element will be a Map that contains a singe entry, which entry has key dev, and a value that's another nested Map, which contains the keys baseurl and baseport. is always seen as literally the sub-variable name, while inside [] you can give an arbitrary expression as far as it evaluates to a string. spring, 3. formInput "flowList[${flow_index}]. When you try to list a such collection variable for the second time, an error will abort template processing. But anyway, the idea is that your macro (which should be rather called showStepRecursively) needs two parameters. how to read JSON file's values in Jun 2, 2024 · When you supply value for interpolations: The usage of interpolations is ${ expression } where expression gives the value you want to insert into the output as text. template. this. and it will give you access to values inside the inner hash. 1", "3. newHashMap(data); public Set<Map. ${key}: ${map[key]} </#list>. If you need to use it multiple times then you can abstract the logic into a macro like this: <#list serviceList as service>. dm yc oa za jj pd rl bf bx iy