Drupal 8 form select default value

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Drupal Answers is a question and answer site for Drupal developers and administrators. It only takes a minute to sign up. I Have content type called image and I'm trying to set the default value for a reference to it in another content type.

The above code doesn't work. Printing out the form variable doesn't make it seem like an easy task.

drupal 8 form select default value

I had trouble with the above on 8. Simple string. Note it didn't display the requisite node in the field but as this was being programmatically set it didn't matter in my use case. You have to set three things, 1 - node default value, 2 - Entity browser default valueAnd 3 - ItemWhich will show in edit form, Without Assigned the items it's not displayed in entity browser, While in backed it is set when we check by kint var, demo code in my case:.

Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 3 years, 10 months ago. Active 9 months ago.

Viewed 7k times. BrandenB BrandenB 2 2 gold badges 13 13 silver badges 26 26 bronze badges. Sadly in D8 the method for doing this depends on the widget being used in the form.

Active Oldest Votes. You need to first check the structure of your form. Eyal 2, 8 8 silver badges 21 21 bronze badges. Stefanos Petrakis Stefanos Petrakis 7, 2 2 gold badges 9 9 silver badges 26 26 bronze badges.

How to check structure of the form :? You can either use a devel module's function dsm or dpm or an IDE with a debugger. Great for D7, it's a protected object in D8 and doesn't seem to kint to that level. A debugger might work. It's a D8 thread, my bad, thought it was D7. Dharmendra singh Dharmendra singh 1 3 3 bronze badges. None of these show the default value selected in the entity browser The Overflow Blog. The Overflow How many jobs can be done at home?By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

drupal 8 form select default value

Drupal Answers is a question and answer site for Drupal developers and administrators. It only takes a minute to sign up. Assuming that your form alter function is actually running which you can confirm with that call to dsmthere are actually 2 more levels of array you need to go down to in order to get to the field element:.

In the majority of cases this will be 'value' but not always for example an image field has a file id column, alt column etc. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Programmatically set the default value for a field Ask Question. Asked 8 years, 2 months ago. Active 4 years, 3 months ago. Viewed 37k times. Active Oldest Votes. In the majority of cases this will be 'value' but not always for example an image field has a file id column, alt column etc Hope that helps.

This answer won't work for all widgets; depends on how they specify their value. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

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How do I set select list default value in Drupal?

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The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. How Can I add custom check box under the default value fieldset and below the text field and it's custom submit handler?

I have tried in my local attaching the screenshot below:. Thanks for help! Learn more. Asked 3 years, 7 months ago. Active 3 years, 5 months ago.

Viewed 5k times. Don't know what I am doing wrong. Please help. What do you want the checkbox for? What should it do? Active Oldest Votes. Viswanath Polaki Viswanath Polaki 1, 1 1 gold badge 9 9 silver badges 18 18 bronze badges. Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.Drupal core provides a couple dozen different input type elements that can be added to forms. This includes one for every standard HTML5 input element, and some Drupal-specific ones that encapsulate more complex interactions like uploading files. But how can you know what elements exist? Where do you find information about what Render API properties each element uses?

Each element in the array consists of a set of properties, and possible nested child elements, that define the details Drupal uses to generate the HTML version of the form. These arrays are known as render arrays, and it's a good idea to be familiar with their structureand the related terminology. The latter are used primarily to define input and control elements on a form.

In addition to the set of default properties available for all RenderElement elements, FormElement elements all have the following properties, as well as element-type-specific properties. Pay special attention to FormElement types, and note that you can click through to the class that defines the element type for additional documentation on element type specific properties and in most cases a usage example. In this tutorial we listed all of the form element types provided by Drupal core and linked to the documentation for each.

We also looked at the list of properties that are available for all form elements regardless of type. View the documentation for each individual element type to see documentation of type-specific properties.

Skip to main content. Last updated May 16, Module Development 8. Goal Provide a reference page for quickly finding information about available form element types. Prerequisites What Are Render Elements? Files are saved as entities and managed by Drupal. This is generally used to protect against cross-site forgeries. A token element is automatically added to each Drupal form so you generally do not need to add one yourself.

Weights are integers used to indicate ordering, with larger numbers later in the order. See the Ajax API topic for more information. See also parentstree. See also value. In an ideal user interface, the title should be enough to describe the element, so most elements should not have a description.

If you do need one, make sure it is translated. If it is not already wrapped in a safe markup object, it will be filtered for XSS safety. Should be translated, normally. If it is not already wrapped in a safe markup object, will be filtered for XSS safety. Should be translated. Possible values: before : Label goes before the element default for most elements. Recap In this tutorial we listed all of the form element types provided by Drupal core and linked to the documentation for each.

Further your understanding Check out the list of properties that are available for all render element types. Remember, those also apply to form elements. Additional resources Element type list api. Was this helpful?By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Drupal Answers is a question and answer site for Drupal developers and administrators. It only takes a minute to sign up.

First off, I have tried to do my homework before coming here. I have referenced thisand this and I still cannot get my code to work. I am simply trying to set a default value in a select form field on a Drupal 8 block configuration form.

Here are the relevant parts of my code:. Everything else works in the form; The options populate, the description and title display. The only thing that doesn't work is the default value. I have tried using keys and values. Can someone please tell me what I'm doing wrong? I can provide more code if needed. On Drupal 8 form, I was having an issue with Firefox that was caching the value of a select field, selected by the user before refreshing the page.

You can do it at the level on the input if that's an input, but since it was a select in my case I had to do it at the form level :. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered.

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Asked 2 years, 1 month ago. Active 1 year, 10 months ago. Viewed 2k times. Your code looks fine and works for me well. Your code is fine. Try doing a hard refresh of the page. Or give us more context if there are special circumstances you haven't mentioned. Thanks for the suggestions!

drupal 8 form select default value

Jaypan I cleared cache server and browser several times and it still wouldn't work. But what I marked as the answer below did work. I don't know the reasoning, but I am just glad it works now. Active Oldest Votes. That is so strange, but using the variable worked!By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Drupal Answers is a question and answer site for Drupal developers and administrators.

It only takes a minute to sign up. Related to my previous question: Form fields created via Ajax are missing element attributes. I have a date field and a series of text and number fields which need their default values to change based on the value of the date field.

I've updated my code so it functions this way:. Create the field in a subkey, which is incremented for each request.

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A solution to append a default value to the field after callback but with option for user to change input:. I've solved this by using the AJAX callback to reload the page, rather than return the form.

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For example:. It's slower than returning the form, but is a lot less code, especially if you're talking about a complex form with a lot of default values. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Ask Question. Asked 2 years, 10 months ago. Active 10 months ago. Viewed 5k times. Related to my previous question: Form fields created via Ajax are missing element attributes I have a date field and a series of text and number fields which need their default values to change based on the value of the date field.

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Is there a known way to do what I am trying to accomplish? Active Oldest Votes. Method 1 setting value does indeed make it impossible for the user to input data. Is this the expected behaviour? Drupal renders all keys in a form render array, I see no reason why this is not happening. If you have on a rebuild in an ajax request still the field in key 0 then the key didn't increment. This is working perfectly.

Thank you!By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Drupal Answers is a question and answer site for Drupal developers and administrators. It only takes a minute to sign up. I would rewrite your code like this.

You can work with multi value fields like an array. The field interface will translate this to store it in the database. To simplify it even more:. This will add the id's to the field, not overwrite the existing ones. If you want to do this, you can set an empty array at the beginning. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. How to set value for multivalue field in drupal 8 programmatically Ask Question.

Asked 3 years, 11 months ago. Active 3 years, 11 months ago. Viewed 13k times. I was saving poll choices Programmatically in Drupal 8. I have used Drupal8 Poll choices module. Stefanos Petrakis 7, 2 2 gold badges 9 9 silver badges 26 26 bronze badges. I cleaned up your question some, could you check it and make sure I got everything right? In Drupal 7 Array was working fine. I mean if a pass values in array they will work but in drupal 8 passing values in array does not work.

Hello harsh, I just saw that you chose another answer as correct.

Changes in the Form API in Drupal 8

Could you provide some feedback about the reason? Some comment? Would be very useful. Active Oldest Votes. Stefanos Petrakis Stefanos Petrakis 7, 2 2 gold badges 9 9 silver badges 26 26 bronze badges.

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Thanks for the help. I am newbie in drupal8 thanks very much you saved my hours. You are welcome. Did you try it then and it works? If so, you should also accept the answer.

If not, let me know, and we can look at this further. Sign up or log in Sign up using Google.

Drupal 8 form validation in our form class

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