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43 lines
2.0 KiB
YAML
43 lines
2.0 KiB
YAML
# Copyright 2020-2021 Lowdefy, Inc
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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_ref:
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path: templates/general.yaml.njk
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vars:
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pageId: operators
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pageTitle: Operators
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section: Concepts
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filePath: concepts/operators.yaml
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content:
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- id: md1
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type: Markdown
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properties:
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content: |
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Operators are functions, that can be used to express logic. They are the reason why Lowdefy apps are not completely static, but can react to data and inputs. Operators can be used in `blocks`, `actions`, `requests`, and `connections`. See the specific documentation for more details.
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Each operators expects arguments with a specific structure. They can be the result of other operators, since operators are evaluated beginning with the most nested operators.
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If an operator errors while evaluating, it returns a `null` value, and logs the error to the console.
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# Build time operators
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The `_ref` and `_var` operators do not work like other operators. They are evaluated while an app is being built, and can thus be used anywhere in the app configuration. They are used to split a app into multiple files, and to reuse configuration. See [`_ref`](/_ref) for more details.
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- _ref:
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path: templates/navigation_buttons.yaml
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vars:
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previous_page_title: Events and Actions
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previous_page_id: events-and-actions
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next_page_title: Secrets
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next_page_id: secrets
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